NBR Seat Flange Butterfly Valve

NBR has good oil resistance, usually if the medium is oil, we will preferably choose NBR material as the seat of the butterfly valve, of course, his medium temperature should be controlled between -30℃~100℃, and the pressure should not be higher than PN25.

  • Size: 2”-160”/DN50-DN4000
  • Pressure Rating: PN10/16, JIS5K/10K, 150LB
  • Warranty: 18 Month
  • Brand Name: ZFA Valve
  • Service: OEM
  • Product Detail

    Product Detail

    Size & Pressure Rating & Standard
    Size DN40-DN4000
    Pressure Rating PN10, PN16, CL150, JIS 5K, JIS 10K
    Face to Face STD API609, BS5155, DIN3202, ISO5752
    Connection STD PN6, PN10, PN16, PN25, 150LB, JIS5K, 10K, 16K, GOST33259
    Upper Flange STD ISO 5211
    Body Cast Iron(GG25), Ductile Iron(GGG40/50), Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L) , Duplex Stainless Steel(2507/1.4529), Bronze, Aluminium Alloy.
    Disc DI+Ni, Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L) , Duplex Stainless Steel(2507/1.4529), Bronze, DI/WCB/SS coated with Epoxy Painting/Nylon/EPDM/NBR/PTFE/PFA
    Stem/Shaft SS416, SS431, SS304, SS316, Duplex Stainless Steel, Monel
    Seat NBR, EPDM/REPDM, PTFE/RPTFE, Viton, Neoprene, Hypalon, Silicon, PFA
    Bushing PTFE, Bronze
    O Ring NBR, EPDM, FKM
    Actuator Hand Lever, Gear Box, Electric Actuator, Pneumatic Actuator

    Product Display

    Flange Type Butterfly Valve (27)
    Flange Type Butterfly Valve (28)
    Flange Type Butterfly Valve (29)
    Flange Type Butterfly Valve (30)
    Flange Type Butterfly Valve (31)
    Flange Type Butterfly Valve (32)

    Product Advantage

    Our valve has standard thickness according to GB26640, makes it capable of holding high pressure when needed.

    The valve body use GGG50 material, has higher mechanical property, rate of spheroidization more than 4 class, makes the ductility of the material more than 10 percent. Compared to regular cast iron, it can suffer higher pressure.

    The valve seat with 3 bushing and 3 O ring, helps supporting the stem and guarantee the sealing.

    Each valve should be cleaned by ultra-sonic cleaning machine, in case of contaminant left inside, guarantee the cleaning of the valve, in case of pollution to the pipeline.

    Bolts and nuts use ss304 material, with higher rust protection capability.

    Handle of the valve use ductile iron, is anti-corrosion than regular handle. Spring and pin use ss304 material. Handle part use semicircle structure, with good touch feeling.

    Non-pin stem design adopts anti-blowout structure, the valve stem adopt double jump ring, not only can compensate the error in installation, but also can stop the stem being blow off.

    Each product of ZFA has material report for the main parts of the valve.

    ZFA Valve body use solid valve body, so the weight is higher than regular type.

    Pneumatic actuators adopt double piston structure, with high precision and effective, and stable output torque.

    Body Test: The valve body test use 1.5 times pressure than standard pressure. The test should be done after installation, the valve disc is half close, called body pressure test. The valve seat uses 1.1 times pressure than standard pressure.

    Special Test: According to customer’s requirement, we can do any test you need.

    Company Advantage

    Our valves are compliance with valve international standard of ASTM, ANSI, ISO, BS, DIN, GOST, JIS, KS and so on. Size DN40-DN1200, nominal pressure: 0.1Mpa~2.0Mpa, suitable temperature:-30℃ to 200℃. The products are suitable for non-corrosive and corrosive gas, fluid, semi-fluid, solid, powder and other medium in HVAC, fire control, water conservancy project, water supply and drainage in urban, electric powder, petroleum, chemical industry, and so on.

    Price Advantage: Our price is competitive because we process valve parts by ourselves.

    We think “Customer satisfaction is our ultimate goal.” Depending on our advanced technology, complete quality control and good reputation, we will offer more high-quality valve products.

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