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Compound exhaust 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.

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Classification:

Ductile iron valve series

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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

CARX composite exhaust valve body is barrel-shaped, valve components include stainless steel float ball, lever and disc. The valve is installed at the outlet of the pump or in the water distribution pipeline to exclude the air collected in the pipe to improve the efficiency of the pipeline and the water pump. Once the negative pressure is generated in the pipe, the valve quickly sucks in the outside air to prevent The pipeline is damaged by negative pressure. When the tube begins to fill water, the valve flap in the open position, a large amount of exhaust, when the air is discharged when the valve is filled with water, floating ball rises and drives the valve flap to close, stop exhaust, when the water in the tube normal transport, if there is a small amount of air gathered in the valve to a considerable extent, the valve water level drops, at this time the air is discharged from the small hole. When the water pump stops, the water in the pipe is empty or negative pressure is generated in the pipe. At this time, the plug head is quickly opened to inhale air to ensure the safety of the pipeline.

◆Technical parameters

Nominal pressure: 1.0 ~ 1.6MPa
Nominal diameter: DN25 ~ 32mm for threaded connection
DN50 ~ 200mm for flange connection
Applicable medium: water, oil and other non-corrosive liquid
Applicable temperature: 0~100 ℃
Flange standard: GB/T17241.6
Test standard: GB/T 13927





◆ Typical installation diagram

 ◆ Material of main parts

Part Name Valve body Bonnet floating ball Lever frame Leverage plug head
Material ductile iron ductile iron Stainless Steel Stainless Steel aluminum green steel aluminum green steel

 

◆ Main outline connection dimension

DN 25 32 50 65 80 100 150 200
L 280 280 360 360 400 465 537 537
L1 176 176 208 208 244 275 332 332
H 330 330 475 475 552 623 686 686

 

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