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    17 Products

    Check Valves with Solder-Socket Fittings

    Solder these valves to copper tubing for a permanent, leak-tight connection. They open to allow flow in one direction and close when flow stops or reverses. All have a removable cap that provides easy access to internal components for maintenance.
    Bronze Body
    Image of Product. Front orientation. Check Valves. Check Valves with Solder-Socket Fittings.
    Flow Coefficient (Cv)—Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
    For Copper
    Tube Size
    For Tube
    OD
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    End-to-End
    Lg.
    Mounting Position
    Features
    Specs.
    Met
    For Use
    With
    Disc
    Material
    Seal
    Material
    Each
    Solder Socket × Solder Socket—Pressure Class 125
    1/4
    		3/8" 1.3200 psi @ 70° F125 psi @ 350° F0.5-20 to 4052 1/16"Horizontal, VerticalRemovable CapMSS SP-80Steam, WaterBronzeBronze9782K12000000
    3/8
    		1/2" 2.5200 psi @ 70° F125 psi @ 350° F0.5-20 to 4052 1/16"Horizontal, VerticalRemovable CapMSS SP-80Steam, WaterBronzeBronze9782K1400000
    1/2
    		5/8" 4.8200 psi @ 70° F125 psi @ 350° F0.5-20 to 4052 9/16"Horizontal, VerticalRemovable CapMSS SP-80Steam, WaterBronzeBronze9782K16000000
    3/4
    		7/8" 14.3200 psi @ 70° F125 psi @ 350° F0.5-20 to 4053 3/8"Horizontal, VerticalRemovable CapMSS SP-80Steam, WaterBronzeBronze9782K18000000
    1
    		1 1/8" 24200 psi @ 70° F125 psi @ 350° F0.5-20 to 4054 1/16"Horizontal, VerticalRemovable CapMSS SP-80Steam, WaterBronzeBronze9782K22000000
    1 1/2
    		1 5/8" 60200 psi @ 70° F125 psi @ 350° F0.5-20 to 4055 1/4"Horizontal, VerticalRemovable CapMSS SP-80Steam, WaterBronzeBronze9782K26000000
    2
    		2 1/8" 102200 psi @ 70° F125 psi @ 350° F0.5-20 to 4056 3/8"Horizontal, VerticalRemovable CapMSS SP-80Steam, WaterBronzeBronze9782K28000000
     

    Check Valves for Refrigerant

    Use these valves in refrigeration and air-conditioning systems. All open to allow flow in one direction and close when flow stops or reverses. They solder to copper tubing for a permanent, leak-tight connection.
    Copper Body
    Image of Product. Front orientation. Check Valves. Check Valves for Refrigerant.
    Flow Coefficient (Cv)—Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
    For Copper
    Tube Size
    For Tube
    OD
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    End-to-End
    Lg.
    Mounting Position
    For Use
    With
    Ball Material
    Spring
    Material
    Seal
    Material
    Each
    Solder Socket × Solder Socket
    1/4
    		3/8" 1.2755 psi @ 300° F1-40 to 3003 3/4"Any Angle, Horizontal, VerticalRefrigerantStainless Steel
    		Stainless Steel
    		Neoprene
    		2065N11000000
    3/8
    		1/2" 2.2755 psi @ 300° F1-40 to 3003 3/4"Any Angle, Horizontal, VerticalRefrigerantStainless Steel
    		Stainless Steel
    		Neoprene
    		2065N1200000
    3/4
    		7/8" 7.5755 psi @ 300° F1-40 to 3004 1/2"Any Angle, Horizontal, VerticalRefrigerantStainless Steel
    		Stainless Steel
    		Neoprene
    		2065N1400000
    1
    		1 1/8" 12.4755 psi @ 300° F1-40 to 3005"Any Angle, Horizontal, VerticalRefrigerantStainless Steel
    		Stainless Steel
    		Neoprene
    		2065N15000000
     

    Check Valves with Solder-Socket Fittings for Drinking Water

    Solder these valves to copper tubing for a permanent, leak-tight connection. They meet NSF/ANSI 61 for use in drinking water lines. All open to allow flow in one direction and close when flow stops or reverses.
    Brass Body—Spring-Loaded Piston
    Image of Product. Front orientation. Check Valves. Check Valves with Solder-Socket Fittings for Drinking Water.
    Flow Coefficient (Cv)—Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
    For Tube
    OD
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    End-to-End
    Lg.
    Mounting Position
    Specs. Met
    Food Industry
    Std.
    For Use With
    Piston
    Material
    Spring Material
    Seal
    Material
    Each
    Solder Socket × Solder Socket
    1/2" 9.36400 psi @ 180° F0.510 to 2103 7/16"Any Angle, Horizontal, VerticalASME B16.18NSF/ANSI 61
    		Drinking WaterPEI302 Stainless Steel
    		Buna-N
    		1937N1000000
    3/4" 16.3400 psi @ 180° F0.510 to 2104 3/16"Any Angle, Horizontal, VerticalASME B16.18NSF/ANSI 61
    		Drinking WaterPEI302 Stainless Steel
    		Buna-N
    		1937N200000
    1" 24.16400 psi @ 180° F0.510 to 2104 7/8"Any Angle, Horizontal, VerticalASME B16.18NSF/ANSI 61
    		Drinking WaterPEI302 Stainless Steel
    		Buna-N
    		1937N300000
    1 1/2" 51.9400 psi @ 180° F0.510 to 2105 13/16"Any Angle, Horizontal, VerticalASME B16.18NSF/ANSI 61
    		Drinking WaterPEI302 Stainless Steel
    		Buna-N
    		1937N5000000
     

    Two-Stage Backflow-Prevention Valves with Solder-Socket Fittings

    Image of Product. Front orientation. Backflow-Prevention Valves. Two-Stage Backflow-Prevention Valves with Solder-Socket Fittings.
    Solder these valves to copper tubing for a permanent, leak-tight connection. They have two integral check valves with a vent between them for maximum protection from system contamination. If the primary check valve fails to close when flow stops or reverses, overflow is discharged through the threaded vent and the secondary check valve prevents backflow. Attach the vent to drain pipes to prevent spillage. These valves are designed for applications with continuous flow and are commonly used on water supply lines to boilers, processing tanks, and other equipment. All have an integral strainer to prevent debris from blocking the check valves.
    Vent Port
    For Copper
    Tube Size
    For Tube
    OD
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    End-to-End
    Lg.
    Vent
    Connection
    Gender
    Pipe
    Size
    Thread
    Type
    Features
    For Use
    With
    Disc
    Material
    Seal
    Material
    Each
    Brass Body
     
    Solder Socket × Solder Socket
    1/2
    		5/8"175 psi @ 250° F2535 to 2504 3/8"ThreadedFemale1/2
    		NPT
    		StrainerAir, WaterEPDM
    		EPDM
    		4760K660000000
    3/4
    		7/8"175 psi @ 250° F2535 to 2504 13/16"ThreadedFemale1/2
    		NPT
    		StrainerAir, WaterEPDM
    		EPDM
    		4760K67000000
     
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