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

9030-1 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
9033-1 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
9034-1 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
9035-1 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
9036 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
9037 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
9039 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
9040 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
9042 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
9043 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
9089 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
9094 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
9047 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
9048 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
9058 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
9059 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
9061 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
9062 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
9064 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
9065 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
9090 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
9095 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
9071 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
9072 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
9074 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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