| Media: | Water Oil Steam |
|---|---|
| Temperature: | Ordinary Temperature |
| Material: | Cast Steel |
| Connection Form: | Flange |
| Structure: | Swing |
| Pressure: | Ordinary Pressure |
| Customization: |
|---|
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Double Flange Type Double Disc Swing Check Valve belong to short type check valve, mainly used in water, steam, oil, chemical fluid, compound fluid and other pipelines, can effectively prevent medium fluid flow back; Compared with the traditional H44 flange swing check valve has the advantages of small size, light weight, quick switch, reliable sealing, convenient installation, long service life and so on.
Specifications:
Size: 2" to 80",DN50-DN2000
Class: 150LB to 2500LB,PN16-PN420
Type: Double disc,double flanged type
Material: C95800, WCB, WCC, WC6, WC9, C5, C12, CF8, CF8M, CF3, CF3M, CN7M, LCB, LCC, DUPLEX SS, C95800,C95500,C63200,MONEL, ALLOY 20 etc
surge pressure: water hammer pressure is very small, the disc stroke is short, and auxiliary spring open and close;
Flow resistance: the valve flow resistance is small, flow resistance coefficient is 2.6-0.7, the larger the diameter, the smaller the flow resistance;
High temperature: 450 ºC.
Use fixed number of year: top 10 years;
Applicable medium: water, steam, oil, chemical fluid, composite fluid, etc.
Feature:
1. High working pressure: all kinds of materials can reach 1.0mpa respectively at normal temperature.
2, wide operating temperature: PPR operating temperature is -20ºC~+70ºC; The operating temperature of PP is -20ºC~+95ºCC; The operating temperature of GFRPP is -20ºC~+120ºC.
3, good impact resistance: PPR, GFRPP has high mechanical strength and impact resistance.
4, liquid flow resistance is small: the inner wall of the product is smooth, the friction coefficient is small, and the transmission efficiency is high.
5, excellent chemical performance: this product non-toxic, tasteless, acid and alkali resistance, corrosion resistance, wide range of use. PPR is mainly used for food, beverage, tap water, purified water and other liquid pipes and equipment with health requirements, can also be used for corrosive small liquid pipes and equipment; PP, GFRPP is mainly used for corrosive strong acid, strong alkali and mixed acid liquid (gas) circulation.
6, easy installation, good sealing: this product is light in weight, using bonding or welding, complete pipe fittings, simple construction, good sealing, small labor intensity.
Installation Precautions:
1. Do not make the check valve bear weight in the pipeline. The large check valve should be supported independently, so that it is not affected by the pressure produced by the pipe system.
2, installation should pay attention to the medium flow direction should be marked with the direction of the arrow valve
3, swing check valve should be installed in vertical pipeline operation, but also installed in horizontal pipeline.
4, lifting check valve should be installed in the horizontal pipeline operation.
| Design and manufacture | API594,API 6D,JB/TB8937 |
| Face to face and end to end | API594,API6D,DIN3202,JB/T8937; |
| Pressure-temperature rating | ASME B16.34,DIN2410,GB/T9124,HG20625,SH3406,JB/T74 |
| Inspection and test | API598,JB/T9092; |
| Pipe flange | JB/T74~90,JB/T9112-9124,HG20592~20635,SH3406,ASME B16.5,DIN2543~2548,GB/T13402,API605,ASME B16.47. |
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