Pneumatic shut-off valve for liquid ammonia storage tank

Pneumatic shut-off valve for liquid ammonia storage tank

Model: QDQ641F-40P

Overview of Pneumatic Cut off Valve:

The automatic shut-off valve for liquid ammonia in the storage tank is composed of a double (single) acting pneumatic piston actuator and a fireproof and anti-static valve. It is equipped with a travel switch, explosion-proof solenoid valve, and air filter pressure reducing valve. It is powered by compressed air and can be operated by a 0.4-0.7MPa gas source. It also sends two pairs of passive contact signals to indicate the opening and closing of the valve.

Pneumatic shut-off valve for ammonia water storage tank

Technical parameters of pneumatic cut-off valve:

Type: Pneumatic gear rack type

Function form: double acting, single acting (spring automatic reset)

Action form: positive action, negative action

Gas source pressure: 0.4-0.7Mpa

Gas source interface: G1/8, G1/4, G3/8, G1/2

Applicable temperature: -40 ℃ -120 ℃ (For harsh working conditions such as high or low temperature, special cylinder body materials and sealing materials can be selected.)

Optional accessories: locator, filter pressure reducing valve, limit switch, explosion-proof solenoid valve, valve position transmitter, and bracket coupling.

Pneumatic shut-off valve for liquid ammonia storage tank

Design features of pneumatic cut-off valve:

1. Split type precision cast valve body, floating ball, full bore.

2. Valve stem anti blowing and anti-static design.

3. Fire safety design.

4. Soft sealed valve seat, bi-directional pressure bearing.

5. The chamber pressure release structure features a self-adjusting sealing design.

6. Valve stem reverse sealing zero leakage design.

The pneumatic emergency shut-off valve for liquid ammonia storage tanks, also known as the pneumatic shut-off valve for ammonia water storage tanks, adopts wax mold technology introduced from Germany for shell casting, with a reasonable structure and beautiful appearance. The valve seat adopts an elastic sealing structure, which is reliable in sealing and easy to open and close. The valve stem adopts a bottom mounted structure with reverse sealing, and the valve stem will not be flushed out when the valve chamber is abnormally pressurized. By selecting different materials, it can be applied to various media such as water, gas, liquefied gas, liquid ammonia, ammonia, methanol, propane, steam, oil, nitric acid, acetic acid, etc.

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