Cast Steel Wafer Check Valve

Dual plate check valve is a kind of automatic mechanical valve, which opens with a forward flow and shuts to a reversal inflow. It uses two spring-loaded plates mounted on the central hinge screw. When the flow reduces, the torsion spring movement closes the plates before the flow reversal takes place.

 

For wafer type connection, the valve is mounted between the flanges, and the bolts for the flanges are attached to it. There are also some cantering holes on the body of some wafer forms to ensure the proper positioning of the valve between the flanges. The lugged type connection is similar to wafer type, but have slight variations. The lugged holes are drilled and there is a lug hole for each bolt hole on the flanges. And each thread hole has two bolts, one from each flange on opposite sides.

 

 

Wafer check valves are applied to pipe system, as the safe installation of preventing the medium flow back. They are good at non-returning, safety, reliability, small flow resistance, mainly applied to systems of petroleum, chemical industry, food, medication, light textile, water supply and drainage, and energy etc., and used as one-way valve.

 

 

·Design and manufacture: API6D, API594, ASME B16.34

·Test and inspection: API598

·Face to face dimensions: API594, API6D

·Install between flanges: ASME B16.5, JIS, BS4504, DIN2501,EN1092

 

 

·Size: 1-1/2” to 60”

·Class: 150LB to 2500LB

·Type: wafer check valve, lug type wafer check valve and double flanged check valve with double plate or single plate, metal seat or soft seat, spring return

·Material: carbon steel, stainless steel, alloy steel, such as WCB, WCC, WC1, WC6, WC9, C5, C12, CF8, CF8M, CF3, CF3M, CN7M, LCB, LCC, duplex stainless steel, Monel, alloy 20, Al-bronze C95400, cast iron and ductile iron, etc.

 

 

When fluid flows in the correct direction, the disc swings open to allow the fluid to pass through. When the flow stops, or the flow direction changes, the disc swings back and closes the valve to prevent backflow.

 

 

1.Compact design: It has a compact design and take up less space than other types of check valves, which makes them ideal for application where space is limited.

2.Easy installation: They are easy to install and can be installed between two flanges without the need for additional components.

3.Low pressure drop: Wafer check valves have a straight-through flow path, which results in minimal pressure drop across the valve when it is fully open.

 

API594 Cast Steel Dual Plate Wafer Check Valve

 

No.	Part Name	Material
1	Lifting ring bolt	Stainless steel
2	Screw	Stainless steel
3	Axle bushing	Stainless steel
4	Spring	Inconel X-750
5	Body	WCB, CF8,CF8M,CF3,CF3M,AL-BRONZE
6	Disc	WCB,CF8,CF8M,CF3M,AL-BRONZE
7	Disc hinge pin axle	Stainless steel
8	Pin axle bearing	Stainless steel
9	Plate	Stainless steel
10	Sealing face	Metal, EPDM, VITON, BUNA-N and NBR

 

 

150LB, 300LB, 600LB, 900LB, 1500LB, 2500LB

Pressure	Size	2	2-1/2	3	4	5	6	8	10	12	14	16	18	20	24
150LB	L	60	67	73	73	86	98	127	146	181	184	191	203	219	222
	D1	103	122	135	173	195	220	277	337	407	448	512	547	604	715
	Wt.(kg)	2	3	4	6	8	13	25	39	64	85	114	138	163	285
300LB	L	60	67	73	73	86	98	127	146	181	222	232	264	292	318
	D1	110	128	147	179	214	249	305	359	420	483	537	594	652	772
	Wt.(kg)	3	4	6	8	15	18	31	51	83	117	190	200	265	410
600LB	L	60	67	73	79	105	136	165	213	229	273	305	362	368	438
	D1	110	128	147	191	239	264	318	398	455	490	562	610	680	786
	Wt.(kg)	4	5	8	11	20	26	55	103	140	223	360	395	518	836
900LB	L	70	83	83	102	110	159	206	241	292	356	384	451	451	495
	D1	140	162	165	204	245	286	356	432	495	518	572	635	695	835
	Wt.(kg)	8	11	14	20	30	45	84	145	220	350	470	605	820	1050
1500LB	L	70	83	83	102	110	159	206	248	305	356	384	　	Â	Â
	D1	140	162	172	207	252	280	350	433	518	576	639	　	Â	Â
	Wt.(kg)	8	11	8	11	14	20	30	45	84	145	220	　	Â	Â
2500LB	L	70	83	86	105	110	159	206	254	305	　	Â	Â	Â	Â
	D1	143	166	194	232	277	315	385	474	547	　	Â	Â	Â	Â
	Wt.(kg)	10	18	26	40	59	90	150	240	440	　	Â	Â	Â	Â

 

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