Full Metal-Seated Bi-Directional Butterfly Valve

  • Full Metal-Seated Bi-Directional Butterfly Valve
  • Full Metal-Seated Bi-Directional Butterfly Valve
Full Metal-Seated Bi-Directional Butterfly Valve

ZhengFeng's metal seated BI-directional butterfly valve seal used meatl to metal seal, seat and sealing ring is made of metal materials, and do surface hardening treatment.

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Metal seated BI-directional butterfly valve is designed to maintain a seal against bi-directional pressure differential to prevent backflow in systems designed for unidirectional flow. It accomplishes this with a tightly fitting seal, i.e., gasket, o-ring, precision machined, and a flat valve face on the upstream and downstream sides of the valve, valves have threaded inserts at both sides of the valve body. This allows them to be installed into a system using two sets of bolts and no nuts. The valve is installed between two flanges using a separate set of bolts for each flange. This setup permits either side of the piping system to be disconnected without disturbing the other side.


1. Bi-directional seal, can be positive, reverse pressure, no internal leakage, and meet the requirements of zero leakage;

2. The valve seat is forged with all metal alloy steel, anti-erosion, wear resistance, high temperature and high pressure resistance, long service life;

3. Sealing pair can be replaced, greatly reducing the maintenance cost;

4. In order to prevent disc deformation, valve stem dislocation and sealing surface occlusion caused by the influence of fluid pressure and temperature, two independent thrust rings are installed on the upper and lower sides of disc respectively, so as to ensure the normal operation of the valve under any working conditions;

5. The metal to metal seal construction makes the valve itself fireproof and is tested in compliance with API 607;

6. The valve can maintain the bidirectional sealing performance from beginning to end, the valve sealing does not depend on the medium, completely realizes the sealing by the torque which the drive device provides, the valve can seal reliably under the high and the low pressure.

Product Range:

Body material: stainless steel, forged steel, alloy steel

Nominal diameter: 2"~44"

Pressure range:Class150~900

End connection: RF

Working temperature:-29℃~325

Operation: Handwheel, Gear Box, Electric Actuator, etc.



Valve Type

Full Metal-Seated Bi-Directional Butterfly Valve

Valve Material

Stainless steel, forged steel, alloy steel

Valve Test

100% quantity tested before delivery

Valve Guarantee

18 months from the date of dispatch ex works, or 12 months from date of commodity installation.

Valve Painting

Customer request

Valve Package

Wooden case


No requirement

Valve Certificate

API 6D/CE/ISO9001/ISO14001

Delivery Detail

Shipped in 4 or 6 weeks after payment



Payment Terms

L/C, D/A, D/P, T/T

Certificate Offered

Packing List, Commercial Invoice, Test Reports and Material Certificates, Certificate of quality and quantity, Seller’s Certificate of Guarantee

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