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Self-operated differential pressure control valve

A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category.

Key words:

Classification:

Ductile iron valve series

Product Consulting:

Description


A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category. The valve may be operated manually or with a hand wheel, handle or pedal, and may also be controlled to vary the pressure, temperature and flow rate of the fluid medium. The valve can perform continuous or repeated operations on these changes, such as safety valves installed in hot water systems or steam boilers. In more complex control systems, automatic control valves are used as required by external inputs (I. e., to adjust the changing set point of the flow through the pipeline). The automatic control valve does not need to be manually operated according to its input and setting, so that the valve can accurately control the various requirements of the fluid medium. Valves can also be divided into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum steel valves, chromium molybdenum vanadium steel valves, dual phase steel valves, plastic valves, non-standard customized valve materials, etc.

◆ Product overview

ZYC self-operated differential pressure control valve is a kind of self-control by using the pressure change of the medium itself so as to keep the controlled system medium for the water pressure difference constant. It is suitable for differential pressure control of double pipe system in heating mode. Ensure that the system pressure is basically unchanged, reduce noise, balance resistance, and eliminate the hydraulic imbalance of the heating network.

◆Technical parameters

Nominal pressure: 1.6MPa
Nominal diameter: 15~125mm
Applicable medium: water, oil and other non-corrosive liquid
Applicable temperature: 0~100 ℃
Differential pressure control range: constant differential pressure 10KPa, 20KPa, 30KPa
Test standard: GB/T 13927
Test standard: GB/T 13927





◆ Typical installation diagram

◆ Material of main parts

Part Name Valve body Stem Disc Diaphragm
Material cast iron Stainless Steel cast copper nitrile rubber

 

◆ Main outline connection dimension

DN 15 20 25 32 40 50 65 80 100 125
Connection mode Thread Flange
L 110 110 115 130 200 215 230 275 290 310
H(mm) constant differential pressure type 95 110 130 140 190 205 240 300 350 380
流量(m³/h) 0.2-1 0.3-1.5 0.5-2 1-4 1.5-6 2-8 3-12 5-20 10-30 15-45

 

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