●Pneumatic Diaphragm Control Valve Product Overview

The ZJHP(M) type pneumatic diaphragm control valve consists of a pneumatic multi-spring diaphragm actuator and a low flow resistance straight-through single-seat (sleeve) valve. The single-seat valve body features a straight-through single-seat cover with a guiding mechanism, and the valve core adopts a plunger-type structure. Compared to ordinary single-seat valves, it offers advantages such as compact size, lightweight, and high flow capacity, making it suitable for applications requiring high flow rates and strict leakage control.

The ZJHM type compact sleeve valve, compared to ordinary sleeve valves, is one-third smaller in size, one-third lighter in weight, and one-third higher in flow capacity. It is widely used in industrial process control systems that demand low noise and high differential pressure.

● Main Technical Data of Pneumatic Diaphragm Control Valve

1. Valve Body and Internal Parts

Valve Body Type: Straight-through inverted S cast valve

Nominal Diameter: DN20-350 (mm)

Nominal Pressure: 1.6-6.4 MPa

Connection Flange: JB/T74-90 JB/T79.2-94 recessed type

Valve Body Material: ZG270-500, 1Cr18Ni9Ti

Valve Core Type: Top-guided single-seat plunger type

Valve Core: Top-guided single-seat sleeve plunger type

Flow Characteristics: Equal percentage, linear, quick opening

Materials: 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti

Packing: V-type PTFE, flexible graphite packing

2. Pneumatic Actuator

Diaphragm: Nitrile rubber reinforced with polyester fabric

Compression Spring: 60Si2Mn

Push Rod: 2Cr13

Diaphragm Cover: A3

Bushing: 2Cr13

Gasket: Rubber asbestos sheet, PTFE, flexible graphite, 1Cr18Ni9Ti asbestos wound