Valve

"This rifle, made in the Metro by skilled gunsmiths, is extremely accurate and powerful. A truly great long-distance weapon."

- In-game description

The Valve (Russian: Вентиль) is a makeshift sniper rifle in Metro: Last Light and Metro Exodus, created from older pre-war rifles by Metro dwellers. It's the first bolt-action rifle in the series and is one of only three true sniper rifles in the games, with the others being the Preved and the Clapper.

Overview
This weapon is accurate and deadly, but requires a moment in between each shot before another can be fired when Artyom pulls the bolt back. The Valve utilizes a straight-pull bolt charging system (the same as the real life Mondragón rifle). It could have also been built recycling parts (notably the barrel) from old stored Mosin Nagant rifles, PK machinegun, and Dragunov sniper rifles as well.

While not as high as the rare Preved, the Valve has a high damage output - enough to kill almost all unarmored enemies in one shot - it will stagger stronger enemies too, giving Artyom a chance to find cover or fire another round. The Valve can dispatch enemies with ease at mid to long ranges, even more so with attachments like a 4X optical scope. The rate of fire (ROF) is much faster than Preved, especially if the Preved is not upgraded. Although still slower than the semi-automatic Clapper, the Valve is just a little slower in ROF and more common than Clapper.

The Valve also carries more rounds in its magazine (5, or 10 with an extended magazine) and its ammunition, 7.62x54mmR rounds, are easier to find than the Preved's 12.7x108mm rounds; Valve rounds can also be bought in exchanges (albeit for a high price), whereas Preved rounds cannot (This is fixed in Redux version). For Ranger Modes, the rounds can be seen in the back of the magazine, similar to a Bastard, though only up to a maximum of 5; in other words, extended magazines will only tell you when you are half empty or less. In the hands of a skilled player the weapon can even be a very effective close quarters weapon, especially when equipped with a laser sight, muzzle brake, and iron sights.

Its main function is obviously a sniper rifle - it can easily pick off enemies from afar with deadly accuracy, with enough time to take a few more down before they find you. However, its main appeal is also its major disadvantage. Like the Preved - simply put, Last Light has very few places where sniping is possible, and none where stealth would not be preferable. The tunnels of the Metro are very low and cramped, meaning it is difficult to find a decent place to snipe safely - more than likely, the enemies will easily find you and you will be forced to use a closer range weapon. It also lacks any sort of silencer, meaning any shot will alert enemies to your position, removing the advantage of range quickly. If a player is looking to advance the levels stealthily, a silenced assault rifle will be much easier to use - it has more customization options for different situations, is able to use MGRs, and can be used at closer ranges more accurately, VSV is a fine example. One of the only places a Valve is useful is the Battle of D6 at sniping enemy troops - the powerful bullets will make short work of the armored Reds. But, once again, the Preved comes out on top as it is necessary for taking out the tank, and one may as well keep it after that. However, the Valve user will have a higher rate of fire as Preved is a very slow weapon even with attachments. Thus Valve can still be used before the tank arrives. If you want, you can keep the Valve and take it with you while on the surface, here, the enemy will reveal themselves farther and you can snipe them, but keep in mind that Valve and Preved are almost useless when you are at the point-blank range with the mutants and when in a rapid fire situation.

Since there are not a lot of places that Artyom can actually snipe, and the mission that built for snipers, the Sniper Team, already has the much superior Clapper for Artyom, thus Valve is not likely to be seen in his arsenal. However, some large maps, like Bridge, the Valve can be use to pick off mutants before they get close, once again, this demands accuracy as the opponent will not stand still.

Metro: Last Light
The Valve has three attachment slots: optics, barrel and misc. 6 different attachments are available for the Valve: three optics, one barrel and two misc. Both misc attachments can be equipped at once, other slots only take one attachment.

Metro Exodus
The Valve shares stock upgrades with the Tikhar and the Helsing, the Standard Barrel with the Revolver and the Bastard, the Heavy Barrel with the Bastard, and the Long Barrel with the Revolver. It is able to equip the Reflex Sight, NV Scope, and x6 Scope and all three laser gadgets.

All of the Valve's Magazine are unique to itself as it is the only true bolt-action, high-caliber rifle in the game. The most unique upgrade is the Extended magazine, which not only increases the ammo capacity to 15 rounds, but it also completely changes the mechanism of the weapon, making it semi-automatic, rather than bolt-action, at the cost of slightly lowering the damage per shot.

In Sam's Story, a unique modification in form of a suppressor was added to the Valve, which is not available in the base game. It replaces Short barrel as the default barrel option for the Valve. The Valve is of less utility in Vladivostok however, as less stock modifications can be found there.

Acquisition
Valve variants in Metro: Last Light

Metro: Last Light

 * It can first be acquired in the armory of D6, and can be used in Ashes. It will, however, be lost unless playing on Ranger mode, where it can be reclaimed at the end of the Pavel level.
 * Towards the end of "Regina", whilst shunting the abandoned rail car, ghosts can be seen standing outside a door on the left. Inside, Artyom will experience visions of those sheltered in the makeshift hospital. At the far end of the room is an unmodified Valve.
 * Available from the merchant in Venice for 130 MGR.
 * After entering the swamp on the Sundown level, a prominent watchtower stands in a small compound. On a table there is a Valve with 4X Scope and laser sight, perfect for dealing with shrimps or demons.
 * Once Artyom exits the River of Fate, in the Khan level, before entering the rail car that ends the mission, there is a Valve with expanded magazine, flash suppressor, and reflex sight lying on the table, free for the taking.
 * At the beginning of the mission "Bridge", before going up outside, there is a small room to the left that has a Valve with x4 Scope and laser sight equipped, propped up against the wall among with some supplies - this is one of the few locations where the Valve is useful.
 * In Red Square, after Artyom is saved from the damned souls by the Baby Dark One, there will be a few steps leading to the base of a monument. Leaning against the railing here is a Valve with IR Scope, flash suppressor, laser sight, and extended magazine.
 * Among the weapons available from the Ranger stockpile during the final mission, D6. Can be obtained and customized for free.

Moscow
None of the Hanza Guards in Jamming Outpost or on the Cruiser are equipped with the Valve, nor is there any found in the environment of Moscow.

The Volga
None of the Bandits, the armed fanatics, and trade caravan guards in the Volga are equipped with the Valve, nor is there any found in the environment of the Volga. There are Barrels, Sights and gadgets that can be equipped to the Shambler that can be recovered for later use.
 * There is one Sniper Stock, Grip and Forend for the Valve that can be found in the Volga:
 * At the Aurora, after the briefing from Miller to find Krest, Tokarev will give Artyom a Tikhar with a Sniper Stock, Grip and Forend equipped.
 * There are multiple Standard Barrels for the Valve that can be found in the Volga, both in the environment, and in the hands of the Bandits, the armed Fanatics and the trade caravan guards. They are commonly found on both Bastards and Revolvers.
 * There is one Heavy Barrel for the Valve that can be found in the Volga:
 * Heading south to the Port from the Aurora, there is a rusted fishing boat in the main cabin next to a dead fanatic. Attached to a Bastard.
 * There is one Long Barrel for the Valve that can be found in the Volga:
 * In the Bandit occupied ruins, at the the northeast corner of exposed pylons, on the wooden plank next to a zip-line point. Attached to a Revolver.

Yamantau
None of the Cannibals in Yamantau are not equipped with the Valve, nor is there any found in the environment of Yamantau. There are sights and gadgets that can be equipped to the Bastard that can be recovered.
 * There are two NV Scopes for the Valve that can be found in Yamantau:
 * After passing through the frozen morgue and into the weapon storage room, on a table. Attached to a Kalash.
 * In the first barracks section, in the last room on the right, propped up in a chair. Attached to a Kalash.
 * There are two Infrared Lasers for the Valve that can be found in the environment of Yamantau:
 * In the first barracks section, in the last room on the right, propped up in a chair. Attached to a Kalash.
 * After passing through pile of rubble to reach a isolated bunkroom. Climb up the stack of boxes to reach the top of the small room, there on another crate. Attached to Ashot

The Caspian
The Munai-Bailer in Caspian are equipped with Valve in a variety of configurations. The Valve is the fourth most commonly used weapon by the Munai-Bailer along with being uncommonly found in the environment in the Caspian.
 * There are four Assault Stocks, Grip and Forend for the Valve that can be found in the Caspian:
 * Southwest of Saul's outpost, at the end on the exposed docks, on a leather seat next to a fire pit. Attached to a Valve.
 * One of the Munai-Bailer guards at the shipping crate camp northwest of the boat safe-house will have a Assault Stock, Grip and Forend as part of his load-out. Attached to a Valve.
 * In the middle of a lurker nest west of the Aurora, next to a dead tribal. Attached to a Valve.
 * One of the Munai-bailer guarding the foot of the crane will have Assault Stock, Grip and Forend as part of his load-out. Attached to a Valve.
 * There are three Sniper Stocks, Grip and Forend for the Valve that can be found in the Caspian:
 * One of the Munai-Bailer attacking the Lighthouse will have a Sniper Stock, Grip and Forend as part of his load-out. Attached to a Valve.
 * Eye the the Munai-Bailer sniper will have a Sniper Stock, Grip and Forend as part of his load-out. Attached to a Valve.
 * In the cabin of the crane that is used by Eye the Sniper as his hide. On a table next to a workbench Attached to a Valve.
 * There are three Heavy Stocks for the Valve that can be found in the Caspian:
 * In the boat safe-house between Saul's outpost and the Munai-bailer ship breaking camp, on a table inside the main cabin. Attached to a Valve.
 * In the bridge of the ship that is the center of the ship breaking camp, on top of a wooden crate. Attached to a Valve.
 * After recovering the maps from the communication center, follow the road to the northwest . Once you hit the salt flats, turn east and cross the road and climb the partially collapsed metal elevated road, next to a dead combat slave. Attached to a Valve.
 * There are multiple Standard Barrels for the Valve that can be found in the Caspian:
 * One of the Munai-Bailer in the caverns under the Lighthouse will have a Standard Barrel as part of his load-out. Attached to a Revolver.
 * Three of the Munai-Bailer attacking the Lighthouse will have Standard Barrels as part of their load-out. One is attached to a Revolver, one is attached to a Bastard, and one is attached to a Valve.
 * In the middle of a lurker nest west of the Aurora, next to a dead tribal. Attached to a Valve.
 * Two of the Munai-bailer attacking the canyon on the southeastern part of the map will have Standard Barrels as part of their load-out. One is attached to a Bastard, one is attached to a Revolver.
 * Three of the Munai-bailer guarding the Oasis will have Standard Barrels as part of their load-out. Two are attached to a Bastard, one is attached to a Revolver.
 * Five of the Munai-bailer attacking the Aurora will have Standard Barrels as part of their load-out. All five are attached to a Bastards.
 * Two of the Munai-bailer guarding the Prison Hulk will have Standard Barrels as part of their load-out. One is attached to a Bastard, one is attached to a Revolver.
 * One of the fake guards for the "Baron" will have a Standard Barrel as part of its load-out. Attached to a Revolver.
 * Eye the the Munai-Bailer sniper will have a Standard Barrel as part of his load-out. Attached to a Valve.
 * One of the Munai-bailer guarding the foot of the crane will have Standard Barrel as part of his load-out. Attached to a Bastard.
 * In the cabin of the crane that is used by Eye the Sniper as his hide. On a table next to a workbench Attached to a Valve.
 * At the end of the crane arm. Laying on a piece of sheet metal. Attached to a Revolver.
 * Four of the Munai-bailer that will attack the crane once you reach the main cabin will have Standard Barrels as part of their load-out. One is attached to a Bastard, one is attached to a Revolver, two are attached to Valves.
 * One of the dead Munai-Bailer around the fuel tankers will have Standard Barrel as part of his load-out. Attached to a Bastard.
 * There are twelve Heavy Barrels for the Valve that can be found in the Caspian:
 * Two of the Munai-bailer guarding the outpost north of the lighthouse will have Heavy Barrels as part of their load-out. Both are attached to Bastards.
 * After recovering the maps from the communication center, follow the road to the northwest . Once you hit the salt flats, turn east and cross the road and climb the partially collapsed metal elevated road, next to a dead combat slave. Attached to a Valve.
 * Saul during his visit to Artyom at the safe-house in the still standing section of the metal viaduct will have a Heavy Barrel as part of his load-out. Attached to a Bastard.
 * Inside the third and intact hanger on the abandon helicopter base, in the middle of the second turn, next to a dead combat slave. Attached to a Bastard.
 * One of the Munai-bailer who is occupying the the first ship to east of the road heading to the ship breaking camp will have a Heavy Barrel as part of his load-out. Attached to a Bastard.
 * Three of the Munai-bailer reinforcing the attack the canyon on the southeastern part of the map will have Heavy Barrels as part of their load-out. One is attached to a Bastard, two are attached to a Valve.
 * Three of the Munai-bailer guarding the Oasis will have Heavy Barrels as part of their load-out. All three are attached to Valves.
 * There are nine Long Barrels for the Valve that can be found in the Caspian:
 * In the bridge of the ship that is the center of the ship breaking camp, on top of a wooden crate. Attached to a Valve.
 * Two of the Munai-Bailer guards at the shipping crate camp northwest of the boat safe-house will have Long Barrels as part of their load-out. One is attached to a Revolver, one is attached to a Valve.
 * Two of the Munai-bailer guarding the outpost north of the lighthouse will have Long Barrels as part of their load-out. Both are attached to Valve.
 * In the destroyed building across the road from Anna's OP on the metal viaduct, next to a dead tribal. Attached to a Revolver.
 * One of the Munai-bailer attacking the Aurora will have Long Barrel as part of their load-out. Attached to a Revolver.
 * In the center of the destroyed buildings that are in the abandoned port. There is a partially collapsed sheet metal building, on the northeast corner of the roof, next to a dead Munai-bailer. Attached to a Revolver.
 * One of the Munai-bailer that will attack the crane once you reach the main cabin will have a Long Barrel as part of his load-out. Attached to a Revolver.
 * There are three NV Scopes for the Valve that can be found in the Caspian:
 * In the boat safe-house between Saul's outpost and the Munai-bailer ship breaking camp, on a table inside the main cabin. Attached to a Valve.
 * Following the road along the coast to the northwest, there is a wrecked ship on the north side of the road that is crawling with Humanimals. Inside the hull in the third compartment from the bow, laying against a partial buried wooden crate. Attached to a Shambler.
 * One of the Munai-bailer guarding the Prison Hulk will have NV Scope as part of his load-out. Attached to a Kalash.
 * There are three x6 Scopes for the Valve that can be found in the Caspian:
 * One of the Munai-bailer guarding the Oasis will have a x6 Scope as part of his load-out. Attached to a Bulldog.
 * Eye the the Munai-Bailer sniper will have a x6 Scope as part of his load-out. Attached to a Valve.
 * In the cabin of the crane that is used by Eye the Sniper as his hide. On a table next to a workbench Attached to a Valve.
 * There are eight 5-Round Single Column Magazines for the Valve that can be found in the Caspian:
 * Southwest of Saul's outpost, at the end on the exposed docks, on a leather seat next to a fire pit. Attached to a Valve.
 * In the bridge of the ship that is the center of the ship breaking camp, on top of a wooden crate. Attached to a Valve.
 * One of the Munai-Bailer guards at the shipping crate camp northwest of the boat safe-house will have a 5-Round Single Column Magazine as part of his load-out. Attached to a Valve.
 * One of the Munai-Bailer attacking the Lighthouse will have a 5-Round Single Column Magazine as part of his load-out. Attached to a Valve.
 * One of the Munai-bailer guarding the Oasis will have 5-Round Single Column Magazine as part of his load-out. Attached to Valve.
 * One of the Munai-bailer attacking the Aurora will have 5-Round Single Column Magazine as part of his load-out. Attached to a Valve.
 * Eye the the Munai-Bailer sniper will have a 5-Round Single Column Magazine as part of his load-out. Attached to a Valve.
 * One of the Munai-bailer that will attack the crane once you reach the main cabin will have 5-Round Single Column Magazine as part of his load-out. Attached to Valve.
 * There is one 15-Round Extended Magazine and Semi-Automatic Receiver for the Valve that can be found in the Caspian:
 * Continuing down the coastal road, past the fortified western crossroads. Once you pass the crashed Hind, take the fork in the southwest. At the end of the road, there is a small cave with a workbench. Sitting on a container.
 * There are two Infrared Lasers for the Valve that can be found in the Caspian:
 * North along the coastal road after leaving the Communication Center, off the east there is a demon nest on top of a rock outcropping. On the western side of the outcropping, next to a dead Munai-bailer. Attached to a Bulldog.
 * One of the fake guards for the "Baron" will have a Infrared Laser as part of its load-out. Attached to a Revolver.
 * There are three Green Lasers for the Valve that can be found in the the Caspian:
 * Head directly south from the Aurora into a small box canyon. At the end, next to a firepit and some bedding, laying on a wooden crate. Attached to a Ashot.
 * At the central crossroads southwest of the central oil field, there is a wrecked van and to the northwest of the van, on the ground next to a dead combat slave. Attached to a Revolver.
 * In the abandon helicopter base to the northwest of the map, in the northwest corner past the hangers. There is a shack made from sheet metal, on a table to the left immediately after entering. Attache to a Revolver.

The Taiga
Further upgrades for the Valve can be found in the Taiga both in the environment or in the hands of humans enemies. The Valve is the fourth most used weapon used by the Children of Forest but the third most used weapon by the Bandits in the Taiga.
 * There are seven Assault Stocks, Grip and Forend for the Valve that can be found in the Taiga:
 * In the island cache, just east of the Forest Court settlement. Laying on a dirt filled wooden crate. Attached to a Helsing.
 * Follow the creek outside of the Forest Court settlement to the cliff face to find the entrance to a cave system with a Fire-pit behind Forest Court. Sitting on a chair next to the Fire-pit. Attached to a Helsing.
 * Two Pioneers and one Pirates in the Forest Court will have Assault Stock, Grip and Forends as part of their load-out. All three are attached to Helsing.
 * One of the Bandits in the abandoned village will have a Assault Stock, Grip and Forend as part of his load-out. Attached to a Valve.
 * In the abandoned village, on a windowsill in the northernmost house in the bandit occupied village. Attached to a Valve.
 * One of the Pirates in the Swamp Camp will have a Assault Stock, Grip and Forend as part of his load-out. Attached to a Helsing.
 * There are eighteen Sniper Stock, Grip and Forend for the Valve that can be found in Taiga:
 * At the lower forest tree house with a fire-pit. In the upper level, sitting on a wooden chair. Attached to a Helsing.
 * Left behind after the Master of the Forest attacks the two Pirates and two Pioneers while Artyom is stuck in the Net. Attached to a Helsing.
 * The Pioneer Sniper on Over-watch just outside of the Forest Court will have a Sniper Stock, Grip and Forend as part of his load-out. Attached to a Helsing.
 * In the top floor of the two story structure in the Forest Court. Hanging on the wall next to the workbench in the classroom. Attached to a Helsing.
 * Three of the Pioneers in the Forest Court will have Sniper Stock, Grip and Forend as part of their load-out. All three are attached to a Helsings.
 * One of the Bandits in the abandoned village will have a Sniper Stock, Grip and Forend as part of his load-out. Attached to a Valve.
 * Head east from the bottom of the bell tower towards a stone cross halfway down the hillside, hanging on the cross. Attached to a Valve.
 * In the Gazebo Fire-pit overlooking the Pirate Swamp Camp. Resting against the side of Gazebo. Attached to a Helsing.
 * Seven of the Pirates in the Swamp Camp will have Sniper Stock, Grip and Forend as part of their load-out. Five are attached to Valves, and two are attached to a Helsings.
 * After rowing out of the Pirate Swamp Camp to the abandon lumber mill. Climb up the wooden planking that surrounds a large tree to reach a zip-line. Use the zip-line to reach the scaffolding outside the lumber mill. Laying next to a dead pirate. Attached to a Helsing.
 * There are five Heavy Stocks for the Valve that can be found in the Taiga:
 * Two of the Pirates and two of the Pioneers in the Forest Court will have Heavy Stocks as part of their load-out. Three are attached to a Helsing, one is attached to a Valve.
 * Inside the storehouse that is in the northwest of the abandon lumber mill. On some shelving. Attached to a Helsing
 * There are seven Standard Barrels for the Valve that can be found in the Taiga:
 * Two of the Pirates in the Forest Court will have Standard Barrels as part of their load-out. Both are attached to Valves.
 * Five of the Bandits in the abandoned village will have Standard Barrels as part of their load-out. Four are attached to Revolvers, one is attached to a Valve.
 * One of the Pirates in the Swamp Camp will have a Standard Barrels as part of his load-out. Attached to Valve.
 * There are four Heavy Barrels for the Valve that can be found in the Taiga:
 * Four of the Pirates in the Swamp Camp will have Heavy Barrels as part of their load-out. All four are attached to Valves.
 * There are eleven Long Barrels for the Valve that can be found in the Taiga:
 * West of the Lower Forest Tree-house, alongside of the cliff face, is the Alchemist's cave and workshop. On the wall inside the cave. Attached to the Revolver.
 * One of the Pioneer reinforcements after the Master of the Forest will have a Long Barrel as part of his load-out. Attached to a Revolver.
 * One of the Pioneer in the Forest Court will have a Long Barrel as part of his load-out. Attached to a Revolver.
 * Eight of the Bandits in the abandoned village will have Long Barrels as part of their load-out. Five are attached to Revolvers, three are attached to Valves.


 * There are fourteen NV Scopes for the Valve that can be found in the Taiga:
 * In the attic of the camp admin building, on a small pile of wooden crate. Attached to a Helsing.
 * In the basement of the Pirate Water Tower, past a re-bar door and leaning against a wooden crate. Attached to a Helsing.
 * Left behind after the Master of the Forest attacks the two Pirates and two Pioneers while Artyom is stuck in the Net. Attached to a Ashot.
 * One of the Pioneer reinforcements after the Master of the Forest will have a NV Scopes as part of his load-out. Attached to a Helsing.
 * Two Pioneers in the Forest Court will have NV Scopes as part of their load-out. Both are attached to Helsing.
 * Two of the Bandits in the abandoned village will have NV Scopes as part of their load-out. Both are attached to Ashots.
 * Six of the Pirates in the Swamp Camp will have NV Scopes as part of their load-out. Two are attached to Ashots, three are attached to Kalashs, and one is attached to a Helsing.
 * There are seven x6 Scope for the Valve that can be found in the Taiga:
 * Three of the Bandits in the abandoned village will have x6 Scopes as part of their load-out. All three are attached to Valves.
 * Four of the Pirates in the Swamp Camp will have x6 Scopes as part of their load-out. All four are attached to Valves.
 * There are six 5-Round Single Column Magazinse for the Valve that can be found in the Taiga:
 * One of the Pirates in the Forest Court will have a 5-Round Single Column Magazine as part of his load-out. Attached to a Valve.
 * Three of the Bandits in the abandoned village will have 5-Round Single Column Magazines as part of their load-out. All three are attached to Valves.
 * Two of the Pirates in the Swamp Camp will have 5-Round Single Column Magazines as part of their load-out. Both are attached to Valves.
 * There is one 10-Round Staggered Magazine for the Valve that can be found in the Taiga:
 * One of the Pirates in the Swamp Camp will have a 10-Round Staggered Magazine as part of his load-out. Attached to a Valve.
 * There is one 15-Round Extended Magazine and Semi-Automatic Receiver for the Valve that can be found in the Taiga:
 * Inside the northernmost house in the bandit occupied village, on a windowsill. Attached to a Valve.

The Dead City
No Valves can be found in the environment of Novosibirsk. Any upgrades that can be equipped to the Valve are found in the environment attached to Miller's Tikhar.


 * There is one Heavy Stock for the Valve that can be found in Novosibirsk:
 * Once you reach Kirill's room. Miller will leave his Tikhar with an attached Heavy Stock on a shelf near the workbench.
 * There is one NV Scope for the Valve that can be found in the Novosibirsk:
 * Once you reach Kirill's room. Miller will leave his Tikhar with an attached NV Scope on a shelf near the workbench.

Metro: Last Light

 * Unlike almost every other weapon, if you empty the magazine while holding down the aim-down sight button, the game will not automatically reload the Valve. This means that those who play on Ranger Mode may be unaware that they are empty, unless they are counting the visible rounds. The same happens with the Preved and Clapper.
 * To accommodate the five extra rounds, the extended magazine staggers the rounds in the magazine, though the size of the magazine is incorrectly unchanged - it should be twice as thick to accommodate the staggering. Instead of making the magazine thicker, however, it's just twice as long.
 * This weapon is also unique in that it uses the 7.62x54mmR round, which no other weapon uses. This is a bit more common than the 12.7x108mm rounds that the Preved uses however, and the 7.62x54mmR can be bought, while the latter can only be looted outside of Metro Redux.
 * Due to the straight-pull bolt on the Valve, it has a slightly faster fire rate compared to the Preved. To balance this out, the Valve has lower damage than the Preved, due to the Valve being chambered in 7.62x54mmR rounds, rather than more powerful 12.7x108mm used by the Preved, but is still very powerful.
 * The straight pull bolt action is an unusual choice for a rifle, as it's mechanically more complicated and less reliable than a turn bolt rifle. If taken into consideration, however, with the close quarters nature of most fights in the metro, it makes sense to have the faster mechanism as a few seconds between shots could be the difference between life and death.
 * In Metro: Last Light, Artyom chambers a round both after firing the last one and after reloading with a new magazine. In Metro Redux, this has been fixed, and Artyom changes the magazine directly after the last round has been fired, without chambering an extra round which should not exist.
 * The Valve is a great weapon for dealing with demons. It can also function as an alternative to the Preved.
 * Like the Preved, without holding the aim-down sight button, the Valve is inaccurate, even with the laser sight attachment. The bullet will stray a bit from the center of screen without the aim-down sight, but the chance of the stray is not as high as in Preved, especially on the short/medium range.

Metro Exodus

 * The Valve is the sole sniper rifle present in Metro Exodus and, according to the Weapons Trailers, is "Anna's weapon of choice". She does, indeed, wield the rifle throughout most of the game. Idiot, however, does as well, usually with different accessories compared to hers.
 * When the Valve is first encountered in the Caspian Sea, a new ammunition type is also added to Artyom's inventory: the 7.62x54mmR. The Valve is the only weapon to use this ammo (similar to Metro: Last Light) which means it can be broken down if the Valve is not used.
 * The stock Valve actually has a typical turn-down style bolt action; adding a magazine also upgrades the bolt to the more familiar straight-pull action seen in Metro: Last Light, with a new wooden bolt handle to go with it. Similarly, the Auto-Ventil configuration swaps out the whole assembly for a semi-auto receiver and charging handle.
 * The Valve is unlikely to be a very common part of most player character's arsenals. With the Tikhar or Helsing already forced upon them, a long ranged weapon with built-in stealth capabilities is already given. As such, the Valve's niche role is already filled.
 * This may not have been intentional, with the weapons trailers of Metro Exodus showing the "Auto-Ventil" configuration. With a 15-round magazine, the Valve becomes semi-automatic, transitioning from its traditional sniper rifle role into more of a battle rifle. The upgrade was not present in the game at launch, but was later added in the New Game+ update, found near the Baron in the Caspian and inside one of the houses near the bandit camp in the Taiga.
 * As of The Two Colonels update, the extended magazine upgrade seems to have vanished from the game and can no longer be found in these locations. (re-added in the Sam's Story update)
 * The valve has an exceptionally good penetration and can kill enemies behind light to medium cover, such as metal sheeting or car doors from extremely far away.
 * Over very long distances enemies will not hear the valve firing, allowing for the wielder to remain undetected, this can be seen when sniping enemies such as the bandits at the tower camp from Krest's crane in the Volga.
 * When the Valve jams while using a magazine not paired with the semi-auto receiver the bolt simply will not cycle after the last shot leading one to have to manually cycle the bolt for the next round.

Bugs

 * In Metro: Last Light Redux, if the Valve is equipped with a laser sight attachment, the laser dot will be misaligned, pointing a little bit to the right and down from the centre of the screen.

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