The TLW® Check Valve (Tapped Lug Wafer) was engineered for applications where exposed studs 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).
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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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