The TLW Check Valve (Tapped Lug Wafer) was engineered for applications where exposed bolts are not suitable. This non-slam spring-assisted, center-guided, lugged pattern wafer check valve is designed to prevent water hammer and reverse flow. The lightweight compact design fits between mating flanges and meets API 594 face-to-face dimensions. The TLW Check Valve body design eliminates potential leak paths to the environment and is an easy-to-maintain check valve for applications involving liquids, gases, or steam. Tapped holes are provided in the body for lifting lugs to assist with installation (10” and larger sizes only).

All temperature ratings are for standard valves.

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Prod. #

Class

Size

Dimension A

Dimension B

Cv

Cracking Pressure CP

Body

N/A 150 N/A 2 in N/A 2.38 in60 mm N/A 6.00 in152.40 mm N/A 120 N/A 0.5 psig0.034 bar N/A A216 WCB
N/A 300 N/A 2 in N/A 2.38 in60 mm N/A 6.50 in165.10 mm N/A 120 N/A 0.5 psig0.034 bar N/A A216 WCB
N/A 150 N/A 2 in N/A 2.38 in60 mm N/A 6.00 in152.40 mm N/A 120 N/A 0.5 psig0.034 bar N/A A351 CF8M
N/A 300 N/A 2 in N/A 2.38 in60 mm N/A 6.50 in165.10 mm N/A 120 N/A 0.5 psig0.034 bar N/A A351 CF8M
N/A 150 N/A 2.5 in N/A 2.62 in67 mm N/A 7.00 in177.80 mm N/A 205 N/A 0.5 psig0.034 bar N/A A216 WCB
N/A 300 N/A 2.5 in N/A 2.62 in67 mm N/A 7.50 in190.50 mm N/A 205 N/A 0.5 psig0.034 bar N/A A216 WCB
N/A 150 N/A 2.5 in N/A 2.62 in67 mm N/A 7.00 in177.80 mm N/A 205 N/A 0.5 psig0.034 bar N/A A351 CF8M
N/A 300 N/A 2.5 in N/A 2.62 in67 mm N/A 7.50 in190.50 mm N/A 205 N/A 0.5 psig0.034 bar N/A A351 CF8M
N/A 150 N/A 3 in N/A 2.88 in73 mm N/A 7.50 in190.50 mm N/A 260 N/A 0.5 psig0.034 bar N/A A216 WCB
N/A 300 N/A 3 in N/A 2.88 in73 mm N/A 8.25 in209.55 mm N/A 260 N/A 0.5 psig0.034 bar N/A A216 WCB
N/A 150 N/A 3 in N/A 2.88 in73 mm N/A 7.50 in190.50 mm N/A 260 N/A 0.5 psig0.034 bar N/A A351 CF8M
N/A 300 N/A 3 in N/A 2.88 in73 mm N/A 8.25 in209.55 mm N/A 260 N/A 0.5 psig0.034 bar N/A A351 CF8M
N/A 150 N/A 4 in N/A 2.88 in73 mm N/A 9.00 in228.60 mm N/A 430 N/A 0.5 psig0.034 bar N/A A216 WCB
N/A 300 N/A 4 in N/A 2.88 in73 mm N/A 10.00 in254.00 mm N/A 430 N/A 0.5 psig0.034 bar N/A A216 WCB
N/A 150 N/A 4 in N/A 2.88 in73 mm N/A 9.00 in228.60 mm N/A 430 N/A 0.5 psig0.034 bar N/A A351 CF8M
N/A 300 N/A 4 in N/A 2.88 in73 mm N/A 10.00 in254.00 mm N/A 430 N/A 0.5 psig0.034 bar N/A A351 CF8M
N/A 150 N/A 6 in N/A 3.88 in99 mm N/A 11.00 in279.40 mm N/A 825 N/A 0.5 psig0.034 bar N/A A216 WCB
N/A 300 N/A 6 in N/A 3.88 in99 mm N/A 12.50 in317.50 mm N/A 825 N/A 0.5 psig0.034 bar N/A A216 WCB
N/A 150 N/A 6 in N/A 3.88 in99 mm N/A 11.00 in279.40 mm N/A 825 N/A 0.5 psig0.034 bar N/A A351 CF8M
N/A 300 N/A 6 in N/A 3.88 in99 mm N/A 12.50 in317.50 mm N/A 825 N/A 0.5 psig0.034 bar N/A A351 CF8M
N/A 150 N/A 8 in N/A 5.00 in127 mm N/A 13.50 in342.90 mm N/A 1310 N/A 0.5 psig0.034 bar N/A A216 WCB
N/A 300 N/A 8 in N/A 5.00 in127 mm N/A 15.00 in381.00 mm N/A 1310 N/A 0.5 psig0.034 bar N/A A216 WCB
N/A 150 N/A 8 in N/A 5.00 in127 mm N/A 13.50 in342.90 mm N/A 1310 N/A 0.5 psig0.034 bar N/A A351 CF8M
N/A 300 N/A 8 in N/A 5.00 in127 mm N/A 15.00 in381.00 mm N/A 1310 N/A 0.5 psig0.034 bar N/A A351 CF8M
N/A 150 N/A 10 in N/A 5.75 in146 mm N/A 16.00 in406.40 mm N/A 1875 N/A 0.5 psig0.034 bar N/A A216 WCB
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