Silent Check Valve - China HDPE/PVC Pipe& Fittings Manufacturer

Silent Check Valve

1.Connection Ends: Flange to ASME B16.1 CL 125;
2.Working Pressure:300PSl200PSl and 250PSl available upon request；
3.Temperature range:0℃- 80℃；
4.Coating:Fusion Bonded Epoxy Coating in accordance with ANSI/AWWAC550 or painting upon request;

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Category: Valves

Description

Description of Silent Check Valve

The silencer check valve is a valve that automatically opens and closes the valve disc depending on the flow of the medium itself. It is mainly used to prevent the back flow of the medium. It is also known as check valve, one-way valve, anechoic check valve, reverse flow valve and back pressure valve. The silencer check valve is an automatic valve whose main function is to prevent the back flow of the medium, the reverse rotation of the pump and drive motor, and the release of the container medium. In addition, it can be used on lines supplying auxiliary systems where the pressure may rise above the system pressure.

Advantages of Silent Check Valve

Silenced check valves are designed to reduce noise and vibration from fluid media in piping systems. Its valve disc is guided by central axes at both ends of the inlet, opening and closing flexibly, and can be installed horizontally or vertically. The valve disc is spring-loaded, and its quick closing can reduce the occurrence of water hammer. It has good sealing performance and no noise when closing. This kind of valve has the advantages of small size, light weight, low fluid resistance, fatigue resistance and long life.

The seals of silencer check valves usually include rubber seals, metal seals, graphite seals, PTFE seals, etc. These seals have good elasticity and corrosion resistance, and can provide effective sealing and reduce noise. and vibration.

Please Contact us to Get More Details, Send Email: [email protected]</a >. or Mobile:(WhatsApp): +86 155 15596408.</a ></p >

Specification

Specification of Silent Check Valve

Part No.	Part	Standard Speciﬁcation	Options
1	Valve Body	ASTM A536, 65-45-12
2	Stem	AISI 420	AISI 304, AISI 316, AISI 431
3	Hinge Bushing	ASTM B62
4	Spring	AISI 304	AISI 316
5	Nut	AISI 304	AISI 316
6	Disc	ASTM A536, 65-45-12 Bronze Plated
7	O-Ring	EPDM	NBR
8	Hinge Bushing	ASTM B62
9	Seat	ASTM A536, 65-45-12 Bronze Plated
10	O-Ring	NBR	EPDM
11	Screw	Carbon Steel Zinc Plated	AISI 304, AISI 316

DN		Dimensions(mm)
Inch	mm	L	D	D1	C	n-ΦL
2″	50	120	152	120.5	16	4-Φ19.1
2.5″	65	135	178	139.5	17.5	4-Φ19.1
3″	80	155	191	152.5	19	4-Φ19.1
4″	100	165	229	190.5	24	8-Φ19.1
5″	125	190	254	216	24	8-Φ22.2
6″	150	210	279	241.5	25.5	8-Φ22.2
8″	200	260	343	298.5	28.5	8-Φ22.2
10″	250	285	406	362	30.5	12-Φ25.4
12″	300	315	483	432	32	12-Φ25.4

Other specifications have not been shown on our dimension chart, please CONTACT US for more information

Please Send Email: [email protected] or Mobile:(WhatsApp): +86 155 15596408.

Application

Silent check valves are used in a wide range of applications:

Including but not limited to water supply and drainage pipeline systems, industrial water supply systems, urban water supply and drainage systems, etc. Some specially designed silencer check valves can also be used in high or low temperature environments, such as liquefaction In the pipeline system from natural gas to high temperature steam.

Its valve disc adopts central axis guidance technology at both ends of the inlet, making the opening and closing movements flexible, and can be installed horizontally or vertically as needed. This design not only improves the serviceability of the valve, but also reduces the difficulty of installation and maintenance.

When installing the silencer check valve, attention must be paid to ensuring that the flow direction of the medium is consistent with the direction of the arrow marked on the valve body, so as to ensure the normal operation of the valve. In addition, the design of the silencer check valve also pays special attention to reducing noise and water hammer effects. By using rubber soft seal and spring return design, the valve has no impact when opening and closing, thus reducing noise and vibration and achieving “elimination”. “Sound” effect‌.

In summary, the application of silencer check valves is not only limited to preventing medium back flow and protecting system safety, but also its ability to reduce noise and vibration and improve system operating efficiency and reliability.


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