Rubber Flapper Swing Check Valves

Summary

The flap of this valve is coated with rubber on its outer layer and its switching duration can be up to 1 million times. And it is, with the full-flow area design, features by small head loss, not easy piled-up of foreign matters and simple repair. Suitable for the water supply and drainage system, mounted in the pipeline or on the pump outlet, prevent both pump and pipeline from being damaged due to medium's back-flow and water hammer. It can also be mounted on the by-pass pipe for water in and out of a reservoir to assist the water of the reservoir to flow back to the water supply system.

Supplier: Saitai Valve, China
Manufacturer: Shop in Shanghai Qingpu Industrial Park

Technical Parameters

PN(MPa)		1.0	1.6	2.5
Test pressure (MPa)	Shell strength	1.5	2.4	3.75

	Sealing performance	1.1	1.76	2.75

Working temperature		=80°C

Applicable medium		Rinsing,Dead oil

Rubber Flapper Swing Check Valves

Materials

Name of parts	Material

Body,Valve casing	Casting pig,Ductile iron

Disc	Rubber assembly

Spring	Stainless steel

Dimensions

DN mm	PN1.0								PN1.6								PN 2.5
DN mm	L	b	f	D2	D	D1	Z-fd	H	L	b	f	D2	D	D1	Z-fd	H	L	b	f	D2	D	D1	Z-fd	H
40	165	18	2	85	150	110	4-18	180	165	18	2	85	150	110	4-18	180	165	18	2	85	150	110	4-18	180
50	200	20	3	102	165	125	4-18	190	200	20	3	102	165	125	4-18	190	200	20	3	99	165	125	4-18	190
65	215	20	3	122	185	145	4-18	210	215	20	3	122	185	145	4-18	210	215	22	3	118	185	145	8-18	210
80	240	22	3	133	200	160	8-18	230	240	22	3	133	200	160	8-18	230	240	24	3	132	200	160	8-18	230
100	290	24	3	158	220	180	8-18	250	290	24	3	158	220	180	8-18	250	290	24	3	156	235	190	8-22	250
125	330	26	3	184	250	210	8-18	280	330	26	3	184	250	210	8-18	280	330	26	3	184	270	220	8-26	280
150	355	26	3	212	285	240	8-22	315	355	26	3	212	285	240	8-22	315	355	28	3	211	300	250	8-26	315
200	500	28	3	268	340	295	8-22	370	500	30	3	268	340	295	12-22	370	500	30	3	274	360	310	12-26	370
250	620	28	3	320	395	350	12-22	430	620	32	3	320	405	355	12-26	430	620	32	3	330	425	370	12-30	430
300	700	28	4	370	445	400	12-22	475	700	32	4	370	460	410	12-26	475	700	34	4	389	485	430	16-30	475
350	785	30	4	428	500	460	16-22	550	785	36	4	428	520	470	16-26	550	785	38	4	450	555	490	16-33	550
400	915	32	4	482	565	515	16-26	600	915	38	4	482	580	525	16-30	600	915	40	4	505	620	550	16-36	600

Typical installation

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