ISO9001&14001 Flanged Rubber Slowly-Closing Check Valve (XF)

Prod Model:	XF
Markets:	North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe
Length:	150-1840mm
External Diameter Of Flange:	150-1485mm
Power:	Hydraulic
Medium:	Water
Port:	Shanghai, Qingdao, Tianjin
Delivery:	7~15 Days
Connection Form:	Flange
Structure:	Swing
Function:	Nrvz Silence
Material:	Rubber and Steel Flange
Pressure:	Medium Presure

Product Description

The most reliable manufacturer
1 More than 24 years experience of manufacture of expansion joint;
2 Approved supplier for nuclear power industry;
3 Compensator engineering research center of Zhengzhou city (Approved by National Development and  Reform Commission);
4 ISO9001:2008 and ISO14001:2004 certificated by CNAS(China National Accreditation Service for Conformity Assessment);

Product introduction:

1 XF rubber slowly-closing cut-off valve is a new water supply and drainage valve with full rubber structure, duck-mouthed appearance and functions of positive flow-in and reserve cut-off. According to thrust analysis and calculation as well as different operation conditions, it is manufactured with different design mechanism and different rubber products by special processing, At positive operation the water flow inform entrance and the valve will be open at weak hydraulic pressure. The hydraulic pressure is higher. The valve gate will open more greatly and the water flow is greater, At reserve operation, the valve gate closes naturally and seals tightly cut-off valve, the back pressure is higher, the valve gate closes more tightly and the seal effect is better.

2 It is used widely in various drainage exits to prevent from pouring backwards and flowing backwards in city planning, water conservancy and sewage disposal etc, it is the ideal product to replace flap valve.

Product Features:

The advantages are specially marked in comparison with traditional flap valve:

1 Open and close automatically in security and reliability according to hydraulic difference without noise and in no need of operator and maintenance.

2 Positive start has little water resistance and start-up pressure and the flow can be adjusted naturally according to hydraulic pressure.

3 Reserve cut-off has good seal without leakage to prevent from flowing backwards. The back pressure is higher and the effect is barrier.

4 Anticorrosion, aging resistance, deformation resistance, strong adaptability and long use life

5 Wide size scope, nominal diameter of DN50-DN3000.

Notice for order:
1) Users should provide filed operation conditions explain and technical requirements.
2) User should provide necessary technical parameter including nominal diameter of pipe, joint external diameter, installation type and the valves of positive star pressure and reserve cut-off back pressure.
3) Our technicians will select type and design for users according to the request of users.

Type	Nominal dia. of pipe	L for length	H for height	C for external dia. of flange
XF50-150-F	50	150	100	150
XF80-220-F	80	220	140	200
XF100-250-F	100	250	200	225
XF150-340-F	150	340	265	275
XF200-420-F	200	40	325	338
XF250-520-F	250	520	425	400
XF300-620-F	300	620	525	485
XF350-700-F	350	700	625	525
XF400-800-F	400	800	725	588
XF450-900-F	450	900	825	625
XF500-980-F	500	980	925	688
XF600-1120-F	600	1120	1025	800
XF700-1180-F	700	1180	1125	969
XF800-1350-F	800	1350	1400	1080
XF900-1500-F	900	1500	1525	1150
XF1000-1600-F	1000	1600	1725	1325
XF1200-1840-F	1200	1840	1950	1485

Packaging & Delivery:

Wooden case (Out package) and plastic film and textile membrane(inside package). We can make change according to your request.

We really appreciate your attention. Please contact us to gain more information!