Product model: ZMAX/ZMAQ
Valve body material: WCB, 304, 316, 316L
Material of spool: 304, 316 + STL PTFE
Seat Material: 304, 316 + STL; PTFE
Connection mode: flange, thread, welding
Three-way structure: three-way diversion and three-way confluence
Cover Type: Standard Type, Low Temperature Type, Heat Dissipation Type, Bellows Sealing Type
Pneumatic actuator: multi-spring thin film actuator with air-opening and air-closing
Accessories: Electrical positioner, air filter pressure relief valve, handwheel, reserve valve

Product overview

Pneumatic membrane three-way regulating valve is mainly used to divide an inlet fluid into two outlet fluids or to synthesize two inlet fluids into one outlet fluids. Three-way valves are divided into confluence control valves and shunt control valves. Valve size, when the pressure difference is small, the confluence valve can also be used as a diversion valve, but the valve size is large. Do not use shunt valve when pressure difference is high.

Product type

Shunt three-way regulating valve

Confluent three-way regulating valve

Product valve body

Type: Three-way Casting Structure

Nominal Path: DN20-DN200

Nominal Pressure: ANSI150, 300, 600LB JIS10, 16, 20, 30, 40K PN1.6, 2.5, 4.0, 6.4MPa

Connection mode: flange: FF, RF, RJ and LG

Flange standard: ANSI B16.5, JIS B2201 JB/T79.1 PN1.6MPa, JB/T79.2

Thread: DIN, NPT, RC, BSP, G, etc.

Welding: GB12224-89

Sealing surface form: PN16 convex surface, PN40 concave surface

Material: WCB, 304, 316, 316L

Upper cover: Standard type (-20 ~200 ~C) low temperature type (-60 ~196 ~C) heat dissipation type (-40 ~450 ~C)

Bellows sealing type

Cover Form: Plate Form

Filler: V-type fluorotetrafluoroethylene, flexible graphite

Valve components

Core type: single-seat plunger type

Core seat: 304, 316 + STL

Flow Characteristics: Equal Percentage, Linearity, Quick Opening

Executing agency

Form: Multi-spring membrane actuator

Form of action: positive and negative

Diaphragm Material: Polyester Fabric Reinforced by NBR Clip

Spring range: 20-100KPa, 40-200KPa, 80-240KPa.

Supply pressure: 0.14, 0.16, 0.28, 0.40 MPa

Function form

The air-closed FO (positive action actuator) opens vertically when the gas source fails.

Air-Open FC (Pairing Reaction Actuator) When the gas source fails, the horizontal direction is open.

Annex (Configuration as required)

Electrical positioner, air filter pressure relief valve, handwheel mechanism, limit switch, solenoid valve, reserve valve and others

Product performance

Rated KV: Reference Table

Flow characteristics: linear, equal percentage, fast opening

Adjustable range: 30:1

Leakage Class: Metal Seal: Less than 0.01 (ANSI B16.104-1976IV)

Soft seal: less than 0.00001%

Backlash: Less than 1% of total travel (with locator)

Less than 3%-5% of the total trip (without locator)

Basic error: less than (+1%) of the whole journey (with locator)

Less than +5% of the total stroke (without locator)