High-Flow Backpressure Valves

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High-Flow Backpressure Valves: Definition, Parameters & Design Features

Definition of High-Flow Backpressure Valve

High-flow backpressure valves are specifically designed for industrial-grade fluid control systems. Adopting a piston-type pressure transmission structure, they can stably maintain the upstream pressure within the range of 0~1500 Psig, and are suitable for pipelines conveying corrosive media, high-purity liquids, and gases. The valve body is electropolished to achieve a surface roughness of Ra ≤ 0.4μm.

Technical Parameters of High-Flow Backpressure Valve

Parameter Category	Specifications
Structural Design	Piston sensing design; Large-diameter piston for enhanced pressure sensitivity; Piston-type compact structure
Applicable Media	Gases and liquids
Valve Body Material	316L stainless steel
Mounting Option	Panel mounting available
Maximum Operating Temperature	260°C
Pressure Range	0~3000 psig
Flow Coefficient (Cv)	1.0
Weight (Backpressure Valve Only)	≈1.55 kg

Design Features of High-Flow Backpressure Valve

1. Precise Pressure Control

Adopts diaphragm pressure transmission technology, featuring fast response and high control accuracy.
Equipped with external pressure feedback and an extra-large diaphragm design, supporting pressure adjustment to zero differential pressure.

2. Corrosion Resistance and Sealing Performance

The valve body is electropolished (surface finish: 25 Ra). Diaphragm options include PTFE or nylon-lined viton, ensuring excellent chemical corrosion resistance.
The balanced valve seat combined with a sealing rib structure eliminates leakage.