Flanged Backflow Preventer

Short Description:

Size:DN 50~DN 400
Pressure:PN10/PN16/150 psi/200 psi
Standard:
Design:AWWA C511/ASSE 1013/GB/T25178


Product Detail

Product Tags

Description:

Slight resistance Non-return Backflow Preventer (Flanged Type) TWS-DFQ4TX-10/16Q-D - is a kind of water control combination device developed by our company, mainly used for water supply from urban unit to the general sewage unit strictly limit the pipeline pressure so that the water flow can only be one-way. Its function is to prevent the backflow of the pipeline medium or any condition siphon flow back, in order to avoid backflow pollution.

Characteristics:

1. It is of compact and short structure; slight resistance; water-saving (no abnormal drain phenomenon at the normal water supply pressure fluctuation); safe (in abnormal loss of pressure in the upstream pressure water supply system, the drain valve can be open timely, emptying, and the middle cavity of backflow preventer always takes precedence over the upstream in air partition); on-line detection and maintenance etc. Under normal work in economic flow rate, water damage of product designis 1.8~ 2.5 m.

2. Two levels check valve' s wide valve cavity flow design is of small flow resistance, rapidly on-off seals of check valve, which can effectively prevent damages to the valve and pipe by sudden high back pressure, with mute function, effectively extending the service life of the valve.

3. Accurate design of drain valve, drain pressure can adjust the pressure fluctuation value of cut off water supply system, to avoid the interference of the system pressure fluctuations. On-off safely and reliably, no abnormal water leakage.

4. Large diaphragm control cavity design makes the reliability of the key parts is better than that of other backlow preventer, safely and reliably on-off for drain valve.

5. The combined structure of large diameter drain opening and diversion channel, complementary intake and drainage in the valve cavity have no drainage problems, completely limit the possibility of back down stream and siphon flow reversals occur.

6. Humanized design can be online test and maintenance.

Applications:

It can be used in harmful pollution and light pollution,for toxic pollution,it is also used if it cann't prevent backflow by air isolation;
It can be used in source of branch pipe in harmful pollution and continuous pressure flow,and not used in preventing backlow of
toxic pollution.

Dimensions:

xdaswd

  • Previous:
  • Next:
  • Write your message here and send it to us

    Related products

    • PN10 Wafer Butterfly Valve Body-DI Disc-CF8 Seat-EPDM Stem-SS420

      PN10 Wafer Butterfly Valve Body-DI Disc-CF8 Sea...

      Essential details Warranty: 1 years Type: Butterfly Valves Customized support: OEM, ODM Place of Origin: Tianjin, China Brand Name: TWS Valve Model Number: YD7A1X3-10QB7 Application: General Temperature of Media: Normal Temperature Power: Manual Media: Water Port Size: DN50-DN1200 Structure: BUTTERFLY Product name: Wafer Butterfly Valve Size: DN50-DN1200 Pressure: PN10 Body material: DI Disc material: CF8 Seat material: EP...

    • F4 F5 Gate Valve Rising / NRS Stem Resilient Seat Ductile Iron Flange End Rubber Seat Ductile Iron Gate Valve

      F4 F5 Gate Valve Rising / NRS Stem Resilient Se...

      Type: Gate Valves Application: General Power: Manual Structure: Gate Customized support OEM, ODM Place of Origin Tianjin, China Warranty 3 years Brand Name TWS Temperature of Media Medium Temperature Media Water Port Size 2″-24″ Standard or Nonstandard Standard Body material Ductile Iron Connection Flange Ends Certificate ISO, CE Application General Power Manual Port Size DN50-DN1200 Seal Material EPDM Product name Gate valve Media Water Packaging and delivery ...

    • DN300 PN10/16 Resilient Seated Non Rising stem Gate Valve OEM CE ISO

      DN300 PN10/16 Resilient Seated Non Rising stem ...

      Essential details Type: Gate Valves Place of Origin: Tianjin, China Brand Name: TWS Model Number: Series Application: General Temperature of Media: Medium Temperature Power: Manual Media: Water Port Size: DN50~DN1000 Structure: Gate Standard or Nonstandard: Standard Color: RAL5015 RAL5017 RAL5005 OEM: Valid Certificates: ISO CE Body material: GGG40 Seal Material: EPDM Connection type: Flanged Ends Size: DN300 Medium: B...

    • EN558-1 Series 14 Casting GGG40 Rubber Sealing Double Eccentric Butterfly Valve with electric actuator

      EN558-1 Series 14 Casting GGG40 Rubber Sealing ...

      Our mission is usually to turn into an innovative provider of high-tech digital and communication devices by providing worth added design and style, world-class producing, and repair capabilities for 2019 New Style DN100-DN1200 Soft Sealing Double Eccentric Butterfly Valve, We welcome new and outdated clients from all walks of lifetime to get in touch with us for foreseeable future enterprise associations and mutual success! Our mission is usually to turn into an innovative provider of high-t...

    • Professional Factory for China  Ductile Iron Double Flanged Double Eccentric Butterfly Valves with Worm Gear Butterfly Valve

      Professional Factory for China Ductile Iron Do...

      We retain bettering and perfecting our goods and service. At the same time, we perform actively to do research and enhancement for Professional Factory for China Ductile Iron Double Flanged Double Eccentric Butterfly Valves with Worm Gear Butterfly Valve, We feel that a passionate, ground breaking and well-trained workforce can create fantastic and mutually useful business associations with you quickly. Be sure to really feel totally free to contact us for more particulars. We retain betteri...

    • DN600-1200 worm Large size gear cast iron flange butterfly valve

      DN600-1200 worm Large size gear cast iron flang...

      Quick Details Place of Origin: Tianjin, China Brand Name: TWS Model Number: MD7AX-10ZB1 Application: General Material: Casting Temperature of Media: Normal Temperature Pressure: Medium Pressure Power: Manual Media: Water, gas, oil etc Port Size: Standard Structure: BUTTERFLY Standard or Nonstandard: Standard Product name: MD DN600-1200 worm gear cast iron flange butterfly valve DN(mm): 600-1200 PN(MPa): 1.0Mpa, 1.6MPa Flange connec...