The DFT® Model WLC Wafer style Silent Check Valve is a lightweight, spring-assisted, in-line check valve that provides reliable, low maintenance service for a wide range of fluids and pressure/temperature combinations. The joint between the seat ring and body is sealed by the flange gasket upon installation preventing any leakage through the joint when the valve is in service.

Size/Class
  • 1", 1 1/2" - 150/300
  • 2" to 8" - 150/300
  • 10" - 150

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Prod. #

Class

Size

Dimension A

Dimension B

Cv

Cracking Pressure CP

Body

N/A 150/300 N/A 1 in N/A 2.00 in51 mm N/A 2.88 in73 mm N/A 19 N/A 0.36 psig0.025 bar N/A A216 Grade WCB
N/A 150/300 N/A 1 in N/A 2.00 in51 mm N/A 2.88 in73 mm N/A 19 N/A 0.36 psig0.025 bar N/A A351 CF8M
N/A 150/300 N/A 1.5 in N/A 2.50 in64 mm N/A 3.75 in95 mm N/A 36 N/A 0.17 psig0.012 bar N/A A216 Grade WCB
N/A 150/300 N/A 1.5 in N/A 2.5 in64 mm N/A 3.75 in95 mm N/A 36 N/A 0.17 psig0.012 bar N/A A351 CF8M
N/A 150/300 N/A DN 100 4 in N/A 4.00 in102 mm N/A 7.09 in180 mm N/A 265 N/A 0.19 psig0.013 bar N/A A216 Grade WCB
N/A 150/300 N/A DN 100 4 in N/A 4.00 in102 mm N/A 7.09 in180 mm N/A 265 N/A 0.19 psig0.013 bar N/A A351 CF8M
N/A 600 N/A DN 100 4 in N/A 3.13 in80 mm N/A 7.50 in191 mm N/A 234 N/A 0.49 psig0.034 bar N/A A216 Grade WCB
N/A 600 N/A DN 100 4 in N/A 3.13 in80 mm N/A 7.50 in191 mm N/A 234 N/A 0.49 psig0.034 bar N/A A351 CF8M
N/A 900/1500 N/A DN 100 4 in N/A 4.00 in102 mm N/A 8.13 in207 mm N/A 211 N/A 0.46 psig0.032 bar N/A A216 Grade WCB
N/A 900/1500 N/A DN 100 4 in N/A 4.00 in102 mm N/A 8.13 in207 mm N/A 211 N/A 0.46 psig0.032 bar N/A A351 CF8M
N/A 1500 (RTJ) N/A DN 100 4 in N/A 4.13 in105 mm N/A 8.25 in210 mm N/A 211 N/A 0.46 psig0.032 bar N/A A216 Grade WCB
N/A 1500 (RTJ) N/A DN 100 4 in N/A 4.13 in105 mm N/A 8.25 in210 mm N/A 211 N/A 0.46 psig0.032 bar N/A A351 CF8M
N/A 150/300 N/A DN 125 5 in N/A 4.63 in118 mm N/A 9.81 in249 mm N/A 360 N/A 0.29 psig0.020 bar N/A A216 Grade WCB
N/A 150/300 N/A DN 125 5 in N/A 4.63 in118 mm N/A 9.81 in249 mm N/A 360 N/A 0.29 psig0.020 bar N/A A351 CF8M
N/A 150/300 N/A DN 150 6 in N/A 5.50 in140 mm N/A 9.88 in251 mm N/A 506 N/A 0.45 psig0.031 bar N/A A216 Grade WCB
N/A 150/300 N/A DN 150 6 in N/A 5.50 in140 mm N/A 9.88 in251 mm N/A 506 N/A 0.45 psig0.031 bar N/A A351 CF8M
N/A 600 N/A DN 150 6 in N/A 5.38 in137 mm N/A 10.38 in264 mm N/A 441 N/A 0.66 psig0.046 bar N/A A216 Grade WCB
N/A 600 N/A DN 150 6 in N/A 5.38 in137 mm N/A 10.38 in264 mm N/A 441 N/A 0.66 psig0.046 bar N/A A351 CF8M
N/A 900/1500 N/A DN 150 6 in N/A 6.25 in159 mm N/A 11.25 in286 mm N/A 370 N/A 0.58 psig0.040 bar N/A A216 Grade WCB
N/A 900/1500 N/A DN 150 6 in N/A 6.25 in159 mm N/A 11.25 in286 mm N/A 370 N/A 0.58 psig0.040 bar N/A A351 CF8M
N/A 1500 (RTJ) N/A DN 150 6 in N/A 6.25 in159 mm N/A 11.25 in286 mm N/A 370 N/A 0.58 psig0.040 bar N/A A216 Grade WCB
N/A 1500 (RTJ) N/A DN 150 6 in N/A 6.25 in159 mm N/A 11.25 in286 mm N/A 370 N/A 0.58 psig0.040 bar N/A A351 CF8M
N/A 150/300 N/A DN 200 8 in N/A 6.50 in165 mm N/A 12.13 in308 mm N/A 860 N/A 0.56 psig0.039 bar N/A A216 Grade WCB
N/A 150/300 N/A DN 200 8 in N/A 6.50 in165 mm N/A 12.13 in308 mm N/A 860 N/A 0.56 psig0.039 bar N/A A351 CF8M
N/A 1500 N/A DN 200 8 in N/A 8.13 in207 mm N/A 13.81 in351 mm N/A 620 N/A 0.66 psig0.046 bar N/A A216 Grade WCB
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