Definition of Liquid Backpressure Regulator

Liquid backpressure regulators are used to precisely control the upstream pressure of pipeline systems, preventing flow instability caused by siphoning, gravity flow, or pressure fluctuations.

Main Functions of Liquid Backpressure Regulator

Pressure Maintenance: Locks in the preset pressure value to prevent upstream pressure fluctuations from affecting system stability.

Anti-siphoning/Overload Protection: Eliminates flow fluctuations caused by gravity or siphoning, and automatically relieves pressure in case of overpressure.

Applicable Media: Gases, liquids (including corrosive liquids and high-purity fluids), especially suitable for high-purity fields such as chemical engineering, water treatment, and food and pharmaceutical industries.

Structural Design of Liquid Backpressure Regulator

1. Spring Piston/Diaphragm Composite Type: The piston structure withstands high pressure, while the diaphragm enhances sensitivity, solving the problems of wear in pure piston structures or poor pressure resistance of pure diaphragms. It is normally open and achieves rapid response (25) by sensing pressure changes in the backpressure chamber.

2. Air Chamber Pilot-Operated Type (High-Precision Model): The air chamber design improves pressure control accuracy by 5 times compared with spring-type regulators, and supports remote control via electric proportional regulators.

Technical Parameters

Pressure Adjustment Range: 0-1500 PSIG (standard) 1; high-precision models can reach 0-6000 PSIG 4; sanitary-grade models support 0-500 PSIG.

Pressure Resistance Rating: 6000 psi.

Temperature Range: -40℃ to +230℃ (standard models ≤ 100℃; enhanced models/special diaphragms support high temperatures).

Leakage Rate: No gas leakage (for gaseous media).

Flow Coefficient (Cv): 0.01~11 (multiple options available to match different pipe diameters).