Dual Plate Wafer Type Check Valve

Dual Plate Wafer Type Check Valve VS Swing Check Valve

Dual Plate Wafer Type Check Valve FAQs

March 13, 2024 by Brina

Dual Plate Wafer Type Check Valve

The dual plate wafer type check valve is made up of valve body, discs, stem and springs, and is connected by wafer type. Due to the short closing stroke of the valve discs and the springs’ attached, the water hammer phenomenon can be significantly reduced. It is mainly used for water supply and drainage pipe networks of municipal, industrial and high-rise buildings. Because its structural length is shorter than that of general check valves, it is convenient to install.

ANSI 125 Dual Plate Wafer Type Check Valve  Dimensions

Size		A		B		C		D		E		L		WeightKg
inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	Mm
2	50	41/8	105	29/16	65	17/32	20	17/8	48	25/16	59	21/8	54	1.5
2½	65	47/8	124	35/32	80	115/16	49	23/8	60	31/16	78	21/8	54	2.9
3	80	53/8	137	311/16	94	215/16	76	23/4	70	337/64	91	21/4	57	2.1
4	100	67/8	175	45/8	117	33/4	97	315/32	88	45/16	110	21/2	64	4
5	125	73/4	197	511/16	145	411/16	121	417/32	115	519/32	142	23/4	70	5
6	150	83/4	222	611/16	170	55/8	145	59/32	134	611/16	170	3	76	7
8	200	11	279	813/16	224	711/16	193	75/32	182	83/4	222	33/4	95	12.5
10	250	133/8	340	107/16	265	95/8	239	83/4	223	1025/64	264	41/4	108	24
12	300	161/8	410	123/16	310	101/4	259	101/4	260	123/16	310	55/8	143	40
14	350	173/4	451	143/16	360	109/16	274	1113/16	300	143/16	360	71/4	184	48
16	400	201/4	514	161/4	410	131/2	331	14	355	165/16	414	71/2	191	63
18	450	215/8	549	173/4	450	141/2	369	15	382	1723/32	450	8	203	82
20	500	237/8	606	197/8	505	163/8	423	171/8	435	197/8	505	83/8	213	100
24	600	281/4	718	249/16	624	215/8	545	213/32	536	2313/16	605	83/4	222	230
30	750	343/8	873	301/2	775	261/4	667	263/4	680	301/8	765	12	305	381
36	900	407/8	1038	367/16	925	309/16	776	321/4	820	36	915	141/2	368	586
42	1050	475/8	1210	427/16	1078	3613/16	935	373/4	960	4115/16	1065	17	432	939
48	1200	541/8	1375	4811/32	1228	403/16	1021	435/16	1100	48	1220	205/8	524	1304

Dual Plate Wafer Type Check Valve VS Swing Check Valve

1. Material(similarity)：

Both can be made from cast iron, ductile iron, cast steel as well as stainless steel

2. Water hammer pressure：

Wafer type check valve has less water hammer pressure than that of swing check valve.

3. Dimensions & Weight：

The dual plate check valve enjoys short face to face dimension, less weight. While, the swing check valves has longer face to face dimension and  is heavier.

4. Installation (similarity and difference)：

The dual plate wafer check valve is designed to be clamped between two flanges. And the Swing type check valve can installed to the piping by threaded bolts and flanges. Both valves can be installed vertically or horizontally.

5. Open pressure：

the dual plate wafer check valve can open fully at lower pressure. While the swing check valve need higher pressure to open completely.

6. Liability：

The dual plate wafer check valve is more liable compared with swing check valve due to its simple structure and less wallop during when being closed.

Dual Plate Wafer Type Check Valve FAQs

Q


1. How does a dual plate wafer type check valve work?



A.

The discs of a wafer type check valve opens under the action of fluid pressure, and the fluid flows from the inlet side to the outlet side. When the inlet side pressure is lower than the outlet side, the valve discs automatically closes under the action of the fluid pressure difference and the power of springs to prevent the fluid from flowing backwards.

Q


2.How many types of check valves are there?



A.

There’ re swing check valve, lift check valve, dual plate wafer type check valve etc.