DFT: Check Valves:

WLC® Wafer Check Valve

The DFT® Model WLC Wafer Style Check Valve is a lightweight, spring-assisted, center-guided, non-slam 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.
Horizontal or vertical installation.

Documentation:
Product Specifications
(141KB PDF)

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The DFT® Model WLC Wafer Style Check Valve is a lightweight, spring-assisted, center-guided, non-slam 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.

Materials of Construction:
	Carbon Steel Body	Stainless Steel Body
Body	A216 Grade WCB	A351 CF8M
Disc/Stem Assembly	A351 CF8M/A479 316	A351 CF8M/A479 316
Seat	A351 CF8M	A351 CF8M
Spring	A313 316	A313 316
Bushing	A479 316	A479 316

DFT WLC Cast Iron Wafer Threaded In-Line Check Valve

WLC Wafer Check Valve

Wafer design
Standard body material:
- A216 Grade WCB carbon steel
- A351 CF8M stainless steel
Optional body materials:
- Alloy 20
- Hastelloy®
- Inconel® 625
- Duplex SS
- Titanium
Lightweight
Spring-assisted silent closing
Center-guided/Dual-guided stem
Horizontal or vertical installation


WLC WAFER CHECK VALVES
Part #	Class	Size	Dimension A	Dimension B	Cv	Cracking Pressure CP	Body
9030-1	150/300	1 in	2.00 in 51 mm	2.88 in 73 mm	19	0.36 psig 0.025 bar	A216 Grade WCB
9033-1	150/300	1 in	2.00 in 51 mm	2.88 in 73 mm	19	0.36 psig 0.025 bar	A351 CF8M
9034-1	150/300	1.5 in	2.50 in 64 mm	3.75 in 95 mm	36	0.17 psig 0.012 bar	A216 Grade WCB
9035-1	150/300	1.5 in	2.5 in 64 mm	3.75 in 95 mm	36	0.17 psig 0.012 bar	A351 CF8M
9012	600	DN 25 1 in	2.38 in 60 mm	2.88 in 73 mm	19	0.36 psig 0.025 bar	A105
9013	600	DN 25 1 in	2.38 in 60 mm	2.88 in 73 mm	19	0.36 psig 0.025 bar	A479-316
9038	900/1500	DN 25 1 in	2.38 in 60 mm	3.13 in 80 mm	19	0.44 psig 0.030 bar	A105
9041	900/1500	DN 25 1 in	2.38 in 60 mm	3.13 in 80 mm	19	0.44 psig 0.030 bar	A479-316
9130	1500 (RTJ)	DN 25 1 in	2.38 in 60 mm	3.13 in 80 mm	19	0.44 psig 0.030 bar	A105
9131	1500 (RTJ)	DN 25 1 in	2.38 in 60 mm	3.13 in 80 mm	19	0.44 psig 0.030 bar	A479-316
9097	600	DN 40 1.5 in	2.88 in 73 mm	3.75 in 95 mm	23	0.44 psig 0.030 bar	A105
9019	600	DN 40 1.5 in	2.88 in 73 mm	3.75 in 95 mm	23	0.44 psig 0.030 bar	A479-316
9044	900/1500	DN 40 1.5 in	2.88 in 73 mm	3.88 in 99 mm	23	0.54 psig 0.037 bar	A105
9045	900/1500	DN 40 1.5 in	2.88 in 73 mm	3.88 in 99 mm	23	0.54 psig 0.037 bar	A479-316
9132	1500 (RTJ)	DN 40 1.5 in	2.88 in 73 mm	3.88 in 99 mm	23	0.54 psig 0.037 bar	A105
9133	1500 (RTJ)	DN 40 1.5 in	2.88 in 73 mm	3.88 in 99 mm	23	0.54 psig 0.037 bar	A479-316
9003	150/300	DN 50 2 in	2.63 in 67 mm	4.38 in 111 mm	57	0.24 psig 0.017 bar	A216 WCB
9004	150/300	DN 50 2 in	2.63 in 67 mm	4.38 in 111 mm	57	0.24 psig 0.017 bar	A351 CF8M
9006	600	DN 50 2 in	2.38 in 60 mm	4.25 in 108 mm	53	0.26 psig 0.018 bar	A216 Grade WCB
9007	600	DN 50 2 in	2.38 in 60 mm	4.25 in 108 mm	53	0.26 psig 0.018 bar	A351 CF8M
9009	900/1500	DN 50 2 in	2.75 in 70 mm	5.50 in 140 mm	48	0.24 psig 0.017 bar	A216 Grade WCB
9010	900/1500	DN 50 2 in	2.75 in 70 mm	5.50 in 140 mm	48	0.24 psig 0.017 bar	A351 CF8M
9086	1500 (RTJ)	DN 50 2 in	3.13 in 80 mm	5.50 in 140 mm	48	0.24 psig 0.017 bar	A216 Grade WCB
9091	1500 (RTJ)	DN 50 2 in	3.13 in 80 mm	5.50 in 140 mm	48	0.24 psig 0.017 bar	A351 CF8M
9014	150/300	DN 65 2.5 in	2.88 in 73 mm	5.13 in 130 mm	95	0.37 psig 0.026 bar	A216 Grade WCB
9015	150/300	DN 65 2.5 in	2.88 in 73 mm	5.13 in 130 mm	95	0.37 psig 0.026 bar	A351 CF8M
9025	150/300	DN 80 3 in	3.13 in 80 mm	5.75 in 146 mm	140	0.19 psig 0.013 bar	A216 Grade WCB
9026	150/300	DN 80 3 in	3.13 in 80 mm	5.75 in 146 mm	140	0.19 psig 0.013 bar	A351 CF8M
9028	600	DN 80 3 in	2.88 in 73 mm	5.75 in 146 mm	133	0.26 psig 0.018 bar	A216 Grade WCB
Part #	Class	Size	Dimension A	Dimension B	Cv	Cracking Pressure CP	Body
9029	600	DN 80 3 in	2.88 in 73 mm	5.75 in 146 mm	133	0.26 psig 0.018 ba	A351 CF8M
9031	900/1500	DN 80 3 in	3.25 in 83 mm	6.75 in 171 mm	113	0.19 psig 0.013 bar	A216 Grade WCB
9032	900/1500	DN 80 3 in	3.25 in 83 mm	6.75 in 171 mm	113	0.19 psig 0.013 bar	A351 CF8M
9088	1500 (RTJ)	DN 80 3 in	3.25 in 83 mm	6.75 in 171 mm	113	0.19 psig 0.013 bar	A216 Grade WCB
9093	1500 (RTJ)	DN 80 3 in	3.25 in 83 mm	6.75 in 171 mm	113	0.19 psig 0.013 bar	A351 CF8M
9036	150/300	DN 100 4 in	4.00 in 102 mm	7.09 in 180 mm	265	0.19 psig 0.013 bar	A216 Grade WCB
9037	150/300	DN 100 4 in	4.00 in 102 mm	7.09 in 180 mm	265	0.19 psig 0.013 bar	A351 CF8M
9039	600	DN 100 4 in	3.13 in 80 mm	7.50 in 191 mm	234	0.49 psig 0.034 bar	A216 Grade WCB
9040	600	DN 100 4 in	3.13 in 80 mm	7.50 in 191 mm	234	0.49 psig 0.034 bar	A351 CF8M
9042	900/1500	DN 100 4 in	4.00 in 102 mm	8.13 in 207 mm	211	0.46 psig 0.032 bar	A216 Grade WCB
9043	900/1500	DN 100 4 in	4.00 in 102 mm	8.13 in 207 mm	211	0.46 psig 0.032 bar	A351 CF8M
9089	1500 (RTJ)	DN 100 4 in	4.13 in 105 mm	8.25 in 210 mm	211	0.46 psig 0.032 bar	A216 Grade WCB
9094	1500 (RTJ)	DN 100 4 in	4.13 in 105 mm	8.25 in 210 mm	211	0.46 psig 0.032 bar	A351 CF8M
9047	150/300	DN 125 5 in	4.63 in 118 mm	9.81 in 249 mm	360	0.29 psig 0.020 bar	A216 Grade WCB
9048	150/300	DN 125 5 in	4.63 in 118 mm	9.81 in 249 mm	360	0.29 psig 0.020 bar	A351 CF8M
9058	150/300	DN 150 6 in	5.50 in 140 mm	9.88 in 251 mm	506	0.45 psig 0.031 bar	A216 Grade WCB
9059	150/300	DN 150 6 in	5.50 in 140 mm	9.88 in 251 mm	506	0.45 psig 0.031 bar	A351 CF8M
9061	600	DN 150 6 in	5.38 in 137 mm	10.38 in 264 mm	441	0.66 psig 0.046 bar	A216 Grade WCB
9062	600	DN 150 6 in	5.38 in 137 mm	10.38 in 264 mm	441	0.66 psig 0.046 bar	A351 CF8M
9064	900/1500	DN 150 6 in	6.25 in 159 mm	11.25 in 286 mm	370	0.58 psig 0.040 bar	A216 Grade WCB
9065	900/1500	DN 150 6 in	6.25 in 159 mm	11.25 in 286 mm	370	0.58 psig 0.040 bar	A351 CF8M
9071	150/300	DN 200 8 in	6.50 in 165 mm	12.13 in 308 mm	860	0.56 psig 0.039 bar	A216 Grade WCB
9072	150/300	DN 200 8 in	6.50 in 165 mm	12.13 in 308 mm	860	0.56 psig 0.039 bar	A351 CF8M
9074	1500	DN 200 8 in	8.13 in 207 mm	13.81 in 351 mm	620	0.66 psig 0.046 bar	A216 Grade WCB
9084	150	DN 250 10 in	8.25 in 210 mm	17.63 in 448 mm	1355	0.45 psig 0.031 bar	A216 Grade WCB
9085	150	DN 250 10 in	8.75 in 222 mm	17.63 in 448 mm	1355	0.45 psig 0.031 bar	A351 CF8M
9053	1500	DN 250 10 in	9.75 in 248 mm	17 in 432 mm	755	0.61 psig 0.042 bar	A216 Grade WCB
9054	1500	DN 250 10 in	9.75 in 248 mm	17 in 432 mm	755	0.61 psig 0.042 bar	A351 CF8M
9049	1500 (RTJ)	DN 250 10 in	9.75 in 248 mm	17.06 in 433 mm	755	0.61 psig 0.042 bar	A216 Grade WCB
9052	1500 (RTJ)	DN 250 10 in	9.75 in 248 mm	17.06 in 433 mm	755	0.61 psig 0.042 bar	A351 CF8M

WLC Wafer Check Valve Specifications
Class		150 RF	300 RF	600 RF	900 RF	1500 RF	1500 RTJ	2500 RTJ
1"	Dim A	2	2	2.38	2.38	2.38	2.38	2.38
	Dim B	2.88	2.88	2.88	3.13	3.13	3.13	3.13
	Weight	2	2	2.50	4	4	4	4.75
	Cv	19	19	19	19	19	19	19
	CP	0.36	0.36	0.36	0.44	0.44	0.44	0.44
1-1/2"	Dim A	2.50	2.50	2.88	2.88	2.88	2.88
	Dim B	3.75	3.75	3.75	3.88	3.88	3.88
	Weight	4	4	6.50	8	8	7
	Cv	36	36	23	23	23	23
	CP	0.17	0.17	0.44	0.54	0.54	0.54
2"	Dim A	2.63	2.63	2.38	2.75	2.75	3.13	2.81
	Dim B	4.38	4.38	4.25	5.50	5.50	5.50	5.75
	Weight	4	4	5	14	14	14	17
	Cv	57	57	53	48	48	48	35
	CP	0.24	0.24	0.26	0.24	0.24	0.24	0.97
2-1/2"	Dim A	2.88	2.88		3.63	3.63	3.63
	Dim B	5.13	5.13		6.50	6.50	6.50
	Weight	10	10		20	20	20
	Cv	95	95		70	70	70
	CP	0.37	0.37		0.18	0.18	0.18
3"	Dim A	3.13	3.13	2.88	3.25	3.25	3.25	3.38
	Dim B	5.75	5.75	5.75	6.75	6.75	6.75	7.50
	Weight	12	12	11	21	21	21	33
	Cv	140	140	133	113	113	113	80
	CP	0.19	0.19	0.26	0.19	0.19	0.19	0.56
4"	Dim A	4	4	3.13	4	4	4.13
	Dim B	7.13	7.13	7.50	8.13	8.13	8.25
	Weight	20	20	21	38	38	38
	Cv	265	265	234	211	211	211
	CP	0.19	0.19	0.49	0.46	0.46	0.46
5"	Dim A	4.63	4.63		6.25	6.25
	Dim B	8.50	8.50		11.25	11.25
	Weight	35	35		100	100
	Cv	360	360		370	370
	CP	0.29	0.29		0.58	0.58
6"	Dim A	5.50	5.50	5.38	6.25	6.25	6.25
	Dim B	9.88	9.88	10.38	11.25	11.25	11.25
	Weight	41	41	68	100	100	100
	Cv	506	506	441	370	370	370
	CP	0.45	0.45	0.66	0.58	0.58	0.58
8"	Dim A	6.50	6.50	6.50	8	8.13
	Dim B	12.13	12.13	12.63	14.05	13.81
	Weight	86	86	134	237	244
	Cv	860	860	780	620	620
	CP	0.56	0.56	0.56	0.66	0.66
10"	Dim A	8.25			9.75	9.75
	Dim B	17.63			17	17
	Weight	138			430	430
	Cv	1355			755	755
	CP	0.45			0.61	0.61