Product Introduction:

Hastelloy Gate valves are used in straight-flow fluid systems where a minimum amount of friction is required. Unlike other valves, gate valves are constructed to be used either completely open or closed.

If partially open, the fluid velocity can damage the gate valve’s seal and cause leakage.

Hastelloy Gate valves are characterized by a traveling wedge, which is moved with the operation of the stem nut. The Wedge travels perpendicular to the direction of the flow.

Hastelloy Gate valves usually have a minimum pressure drop when fully open, provide tight shut-off when fully closed, and remain relatively free of contamination buildup.

Technical Specification:

Design Standard: API, ASME, EN, ISO, JIS, DIN, BS, GB

Size Range: NPS3/8’’-42’’ (DN10-DN800)

Pressure Rating: 150-1500LB, 1.0-25.0Mpa, JIS10-100K

End Connection: Flange, SW, NPT, BW

Operation: Hand Wheel, Gear, Electric, Pneumatic Actuator, etc.

Applications:

The Hastelloy Gate Valves are widely used in flow control applications across a diverse range of industries – petroleum industry, coal chemistry, organic chemistry, inorganic chemistry, new energy and environmental water treatment.

Design Feature:

Solid wedge/Flexible graphite

Full bore/Reduce bore

Bolted bonnet

Renewable seat/integral seat

Main Part Material:

Hastelloy B, Hastelloy B-2, Hastelloy C276, Hastelloy C-22, Hastelloy C-4, Hastelloy G, Hastelloy G30

N12MV, N7M, CW12MV, CX2MW, CW2M

N10001, N10665, N10276, N06022, N06455, N06007, N06030

Service Recommendation

1. Gate valves are normally used for on-off service. They are not recommended for throttling service.

2. Gate valves are normally installed in horizontal pipe runs with the valve stem vertically up. They can also be installed in vertical or horizontal pipe runs with the valve stem other than vertical, but special construction may be required depending on valve size, service, conditions, and material. When purchasing valves for other than the normal installation, valve orientation should be specified.

3. After closing a gate valve with sufficient force to develop shutoff, the stem should be backed off slightly to relieve stem load. This will enable the stem to expand slightly-without bending or damaging the valve and will not affect valve shutoff.