The DFT® Basic-Check® valve is a versatile all-purpose, spring-assisted, in-line check valve that provides reliable, low maintenance service for a wide range of liquids and gases at various pressure/temperature combinations. The valve consists of a guard cage, spring, valve disc, retaining ring and seat. It can be combined with pipe fittings such as reducing couplings, drain elbows, etc. to form a complete check valve unit ideally suited for a broad range of pipeline applications or incorporated into machinery for OEM applications. The metal-to-metal sealing area of the Basic-Check® valve’s disc and seat is precision lapped, providing very tight shut-off of both gas and liquid. If bubble-tight shut-off is required, resilient soft seats are available.
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Size (in)

Size (mm)

Style

ENDS

ASME CWP

Cv

Prod. #

Size

Line Size Inlet (FNPT) A

Style

Outside Thread (MNPT) B

Valve Cracking Pressure

Cold Working Pressure

ENDS

Cv

N/A 0.25 inDN 8 N/A 0.25 in N/A BSS N/A 1.00 in N/A 0.60 psi16.7 in.water424 mm.water31.1 mmHg0.041 bar N/A 0 psig2500 psig0 barg172 barg N/A NPT N/A 5.8
N/A 0.25 inDN 8 N/A 0.25 in N/A BSE N/A 1.00 in N/A 0.60 psi16.7 in.water424 mm.water31.1 mmHg0.041 bar N/A 0 psig2500 psig0 barg172 barg N/A NPT N/A 5.8
N/A 0.25 inDN 8 N/A 0.25 in N/A BSSH6 N/A 1.00 in N/A 0.60 psi16.7 in.water424 mm.water31.1 mmHg0.041 bar N/A 0 psig6000 psig0 barg414 barg N/A NPT N/A 5.8
N/A 0.25 inDN 8 N/A 0.25 in N/A BSSH7 N/A 1.00 in N/A 0.60 psi16.7 in.water424 mm.water31.1 mmHg0.041 bar N/A 0 psig6000 psig0 barg414 barg N/A NPT N/A 5.8
N/A 0.25 inDN 8 N/A 0.25 in N/A BS316S N/A 1.00 in N/A 0.60 psi16.7 in.water424 mm.water31.1 mmHg0.041 bar N/A 0 psig2500 psig0 barg172 barg N/A NPT N/A 5.8
N/A 0.38 inDN 10 N/A 0.38 in N/A BSE N/A 1.00 in N/A 0.60 psi16.7 in.water424 mm.water31.1 mmHg0.041 bar N/A 0 psig2500 psig0 barg172 barg N/A NPT N/A 5.8
N/A 0.38 inDN 10 N/A 0.38 in N/A BSS N/A 1.00 in N/A 0.60 psi16.7 in.water424 mm.water31.1 mmHg0.041 bar N/A 0 psig2500 psig0 barg172 barg N/A NPT N/A 5.8
N/A 0.38 inDN 10 N/A 0.38 in N/A BSSH6 N/A 1.00 in N/A 0.60 psi16.7 in.water424 mm.water31.1 mmHg0.041 bar N/A 0 psig6000 psig0 barg414 barg N/A NPT N/A 5.8
N/A 0.38 inDN 10 N/A 0.38 in N/A BSSH7 N/A 1.00 in N/A 0.60 psi16.7 in.water424 mm.water31.1 mmHg0.041 bar N/A 0 psig6000 psig0 barg414 barg N/A NPT N/A 5.8
N/A 0.38 inDN 10 N/A 0.38 in N/A BS316S N/A 1.00 in N/A 0.60 psi16.7 in.water424 mm.water31.1 mmHg0.041 bar N/A 0 psig2500 psig0 barg172 barg N/A NPT N/A 5.8
N/A 0.50 inDN 15 N/A 0.50 in N/A BSE N/A 1.00 in N/A 0.60 psi16.7 in.water424 mm.water31.1 mmHg0.041 bar N/A 0 psig2500 psig0 barg172 barg N/A NPT N/A 5.8
N/A 0.50 inDN 15 N/A 0.50 in N/A BSS N/A 1.00 in N/A 0.60 psi16.7 in.water424 mm.water31.1 mmHg0.041 bar N/A 0 psig2500 psig0 barg172 barg N/A NPT N/A 5.8
N/A 0.50 inDN 15 N/A 0.50 in N/A BSS N/A 1.00 in N/A 0.24 psi16.7 in.water424 mm.water31.1 mmHg0.017 bar N/A 0 psig2500 psig0 barg172 barg N/A NPT N/A 5.8
N/A 0.50 inDN 15 N/A 0.50 in N/A BSSH6 N/A 1.00 in N/A 0.60 psi16.7 in.water424 mm.water31.1 mmHg0.041 bar N/A 0 psig6000 psig0 barg414 barg N/A NPT N/A 5.8
N/A 0.50 inDN 15 N/A 0.50 in N/A BSSH7 N/A 1.00 in N/A 0.60 psi16.7 in.water424 mm.water31.1 mmHg0.041 bar N/A 0 psig6000 psig0 barg414 barg N/A NPT N/A 5.8
N/A 0.50 inDN 15 N/A 0.50 in N/A BS316S N/A 1.00 in N/A 0.60 psi16.7 in.water424 mm.water31.1 mmHg0.041 bar N/A 0 psig2500 psig0 barg172 barg N/A NPT N/A 5.8
N/A 0.75 inDN 20 N/A 0.75 in N/A BSE N/A 1.50 in N/A 0.44 psi12.1 in.water307 mm.water22.6 mmHg0.03 bar N/A 0 psig2000 psig0 barg138 barg N/A NPT N/A 13.2
N/A 0.75 inDN 20 N/A 0.75 in N/A BSS N/A 1.50 in N/A 0.44 psi12.1 in.water307 mm.water22.6 mmHg0.03 bar N/A 0 psig2000 psig0 barg138 barg N/A NPT N/A 13.2
N/A 0.75 inDN 20 N/A 0.75 in N/A BSSH6 N/A 1.50 in N/A 0.44 psi12.1 in.water307 mm.water22.6 mmHg0.03 bar N/A 0 psig5500 psig0 barg379 barg N/A NPT N/A 13.2
N/A 0.75 inDN 20 N/A 0.75 in N/A BSSH7 N/A 1.50 in N/A 0.44 psi12.1 in.water307 mm.water22.6 mmHg0.03 bar N/A 0 psig6000 psig0 barg414 barg N/A NPT N/A 13.2
N/A 0.75 inDN 20 N/A 0.75 in N/A BS316S N/A 1.50 in N/A 0.44 psi12.1 in.water307 mm.water22.6 mmHg0.03 bar N/A 0 psig2000 psig0 barg138 barg N/A NPT N/A 13.2
N/A 1.00 inDN 25 N/A 1.00 in N/A BSE N/A 2.00 in N/A 0.36 psi10.1 in.water257 mm.water18.8 mmHg0.025 bar N/A 0 psig1500 psig0 barg103 barg N/A NPT N/A 23.1
N/A 1.00 inDN 25 N/A 1.00 in N/A BSS N/A 2.00 in N/A 0.36 psi10.1 in.water257 mm.water18.8 mmHg0.025 bar N/A 0 psig1500 psig0 barg103 barg N/A NPT N/A 23.1
N/A 1.00 inDN 25 N/A 1.00 in N/A BSSH6 N/A 2.00 in N/A 0.36 psi10.1 in.water257 mm.water18.8 mmHg0.025 bar N/A 0 psig3000 psig0 barg207 barg N/A NPT N/A 23.1
N/A 1.00 inDN 25 N/A 1.00 in N/A BSSH7 N/A 2.00 in N/A 0.36 psi10.1 in.water257 mm.water18.8 mmHg0.025 bar N/A 0 psig6000 psig0 barg414 barg N/A NPT N/A 23.1
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