Summary of ZJHP Pneumatic Single Seat Regulating Valve

ZJHP series pneumatic film through single seat control valves adopt top-guiding structure with multi-spring actuator. The utility model has the advantages of compact structure, light weight, sensitive action, three streamlined fluid passages, small pressure drop loss, large valve capacity, accurate flow characteristics, convenient disassembly and assembly, etc. It is widely used to control gas, liquid and other media accurately. The process parameters such as pressure, flow rate, temperature and liquid level are kept at a given value. It is especially suitable for working occasions where the pressure difference between front and back of small leaking star valves is not large.

This series of products include standard type, regulating cut-off valve, bellows sealing type, jacket insulation type and other varieties. The nominal pressure grades of the products are PN10, 16, 40, 64, and the caliber range of the valve body is DN20-300. The applicable fluid temperature ranges from - 196 +560. The standard of leaking stars is IV or VI. Flow characteristics are linear or equal percentage. Various varieties and specifications are available.

Characteristics of ZJHP Pneumatic Single Seat Regulating Valve

1. Top-guided single-seat control valve, compact structure, fewer components, easy maintenance.

2. Metal spool is suitable for various working occasions, up to IV leak standard, soft seal structure spool up to VI leak standard.

3. The valve body is designed as a low resistance channel with equal cross-section according to the principle of hydrodynamics, and the rated flow coefficient increases by 30%. The adjustable range is large and the inherent adjustable ratio is 50:1. The actuator adopts multi-spring structure, which reduces the height by 30%. The weight was reduced by 30%.

4.ZJHPW bellows sealed control valve can completely seal the moving stem to prevent fluid leakage. ZJHPJ type control valve with heat preservation jacket is used in occasions where the fluid is easy to crystallize and solidify after cooling.

 Common Materials for Main Parts

Main Technical Parameters of Single Seat Valve

 Main performance indicators

Gas Closed (Positive) Metal Sealed Allowable Differential Pressure Meter                                                     单位： MPa

Gas-shut (reaction) metal-sealed allowable differential pressure gauge                                                      单位： MPa

  Gas-shut (reaction) metal-sealed allowable differential pressure gauge                                                 单位： MPa

Gas Closed (Positive) Metal Sealed Allowable Differential Pressure Meter                                                          单位： MPa

Notes to the allowable differential pressure table indicate that:
1. The filler material is PTFE.
2. The flow direction of the medium is opposite to that of the spool closure.
3. Leakage grade of metal seal type is IV
4. The numerical value is limited by nominal pressure, pressure and temperature.
5. Corrugated pipe seal type P2_0 should be re-checked;