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Nice Price Flange Rubber Flexible Check Valve

Nice Price Flange Rubber Flexible Check Valve
Price: US $ 35.9-1000/Piece
Trade Terms: FOB,CFR,CIF
Min Order: 1/Piece
Pay Type: L/C,T/T,Western Union
1. Product introduction:

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. 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.

2. Product characteristics:

The advantages are specially marked in comparison with traditional flap valve:
A) Open and close automatically in security and reliability according to hydraulic difference without noise and in no need of operator and maintenance.
B) Positive start has little water resistance and start-up pressure and the flow can be adjusted naturally according to hydraulic pressure.
C) Reserve cut-off has good seal without leakage to prevent from flowing backwards. The back pressure is higher and the effect is barrier.
D) Anticorrosion, aging resistance, deformation resistance, strong adaptability and long use life
E) Wide size scope, nominal diameter of DN50-DN3000.

3. Installation structure type

1) Belled XF-T---installed at the exit of drainage pipe
2) Flanged XF-T---installed at the exit end with flange of drainage pipe
3) Mounting plate XF-F---installed on the building at the water exit end.
4) Build-in XF-F---installed at the exit end of rain and sewage system in cities.
5) Grout or cement pipe XF-T---installed at the end of grout or cement pipe.

4. 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.

5. Our Advantages:

Henan Liwei Industry Co., Ltd. Is a leading manufacturer of piping expansion joint in China. We have:
(1)More than 24 years experience of manufacture
(2)The Main Drafting Units of Chinese Standard flexible rubber joint
(3)Compensator engineering research center of Zhengzhou city.
(4)Member of CNEA(China Nuclear Energy Association )
(5)ISO9001:2008 and ISO14001:2004 certificated by CNAS(China National Accreditation Service for Conformity Assessment)
(6)The largest vulcanizing equipment in China.

6.Packaging & Delivery


Packaging Details:packing: Unfumigation wooden case (Out package) and Plastic film and Textile membrane(inside package). We can make change as your request.
Delivery Detail:7-20 according to your order


Pls feel free to contact me. I will give you a surprise.
Sunny Yue (only)
Phone: 86-13303813898


TypeNominal dia. of pipeL for lengthH for heightC for external dia. of flange
XF50-150-F50150100150
XF80-220-F80220140200
XF100-250-F100250200225
XF150-340-F150340265275
XF200-420-F20040325338
XF250-520-F250520425400
XF300-620-F300620525485
XF350-700-F350700625525
XF400-800-F400800725588
XF450-900-F450900825625
XF500-980-F500980925688
XF600-1120-F60011201025800
XF700-1180-F70011801125969
XF800-1350-F800135014001080
XF900-1500-F900150015251150
XF1000-1600-F1000160017251325
XF1200-1840-F1200184019501485
Prod Model: Check Valve
Markets: North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe
Power: Hudraulic
Medium: Water
Flange Standard: DIN, ANSI, JIS, BS
Brand Name: Liwei
Delivery: 7~15 Days
Shape: Reducing
Media: Water,Sea Water,Steam,Oil,Acid,Alk
Certificate: ISO9001 ISO14001
Connection Form: Flange
Structure: Swing
Function: Nrvz Silence
Application: Water Industrial Usage
Material: Rubber an Steel
Pressure: Medium Presure
Henan Liwei Industry Co. Ltd, established in 1983, is a leading manufacturer specializing in processing various steam, water, wind pipe expansion joints and compensation joints, and a main base for producing crushers and superfine grinding mills.

Liwei is the appointed enterprise by the former chemical industry ministry, national construction ministry and general petrol chemical company, member unit of China Water Supply Association and Power Equipment Network Union, and joints production unit recommended by China Water Association and National Metallurgy Ministry.

Based on the scientific management mode of modern enterprises, the company owns advanced process, strong technical strength, leading production equipment and complete testing instruments and apparatus, and it has 5 senior engineers, 16 engineers, 30 senior technicians and about 300 employees. With a set of effective service system, the company has formed a service team characterized of honesty and credit, planned site for clients free of charge as well as design and installation of foundation drawings and flow drawings. It can provide professional technical training, dispatch technicians for installation and commissioning in suit.

VTM Series Grinding Mill is the new product of Liwei in 2005, which have been granted certificates of national invention patent and utility model patent (Patent No.: ZL200510017387.2). The superfine vertical roller-based mill was developed and produced by Lu Fucai, a famous mill expert at home, professor Xu Changbai from Zhengzhou University and our company, and it is popular among users after it is put into practice. The mill is an original product with power on the grinding head which borrows advanced technologies at home and abroad. It has characteristics of low vibration, low noise, low energy consumption and high output, etc.

Liwei company has been equipped with rich technical strength, excellent design and complete products test measures. We also own a set of strict management system and high-quality technicians. In 2004, we have gained ISO9001 and ISO14001 certificate.

Insisting on the rennet "Development Through Technology, Making More Friends, Creating Green Environment and Responsible For Future", the company has been devoting itself to creating top products and well serving all clients around the world.

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  • Henan Liwei Industry Co., Ltd.

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