Carx Combined Exhaust Valve

• Type: Compound Exhaust Valve
• Material: Stainless Steel Cast Steel Brass
• Certification: RoHS, CE, ISO9001, TS16949, TUV, GS
• Transport Package: Wooden Box
• Specification: DN15-DN800
• Trademark: XC
• Model NO.: CARX
• Origin: China
• HS Code: 3917400000
• Production Capacity: 9999

Product Description

intro

The CARX compound exhaust valve body is cylindrical, and the valve inner parts include stainless steel ball, valve stem and valve disc. The valve is installed at the pump outlet or in the water distribution pipeline, which is used to remove the air collected in the pipe to improve the efficiency of the pipeline and the pump. When negative pressure is generated in the pipe, the valve quickly inhales the outside air to prevent the pipeline from being damaged due to negative pressure.
When the tube begins to fill the water, the valve flap is in the open position, a lot of exhaust, when the air is discharged, the valve is filled with water, the float rises and drives the valve flap to close, stop the exhaust, when the water in the tube is normally transported, if there is a small amount of air gathered in the valve to a considerable extent, the water level in the valve drops, the float ball then drops, at this time the air is discharged by the small hole. When the pump stops, the water flow in the tube is empty or negative pressure is generated in the tube, and the plug head is quickly opened to inhale air to ensure the safety of the pipeline.

Principle of action

Mainly the use of water on the buoyancy of the float, when the water level of the exhaust valve rises, in the same exhaust, the buoyancy of the float to the water, automatically floating, until the sealing surface of the exhaust port is connected, to a certain pressure when the ball will automatically close, when the water level in the valve is reduced, the ball will drop with the water level, then it will inject a lot of air into the pipeline through the exhaust port, the valve belongs to the automatic valve. When there is a gas overflow in the system, the gas will climb up the pipe and eventually gather at the highest point of the system, and the exhaust valve is generally installed at the highest point of the system, when the gas enters the exhaust valve chamber and gathers at the upper part of the exhaust valve, with the increase of the gas in the valve, the pressure rises, when the gas pressure is greater than the system pressure, the gas will make the water surface in the chamber drop, and the float will drop with the water level. Open the exhaust port; After the gas is drained and the water level rises, the buoy rises with it, close the exhaust port. The same reason, when the system produces negative pressure, the water level in the valve chamber drops, the exhaust port opens, because the external atmospheric pressure is larger than the system pressure at this time, the atmosphere will enter the system through the exhaust port to prevent the harm of negative pressure. Such as tightening the valve cap on the exhaust valve body, the exhaust valve stops venting, usually, the valve cap should be in the open state. The exhaust valve can also be used with the partition valve to facilitate the maintenance of the exhaust valve. [1]

Main parts materials

 

Part name	Body, bonnet	Float ball	Lever holder	Lever	Plug end
Materials	Ductile iron,cast iron	Stainless steel	Stainless steel	Aluminium bronze	Aluminum bronze

Main connection size

 

DN(mm)	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

How it Works

When the water enters the pipeline, the plug head stops in the lower part of the positioning frame, the compound exhaust valve carries out a lot of exhaust, when the air is exhausted, the water enters the valve to float the ball, drive the plug head to close, the compound exhaust valve stops the exhaust. If the pipeline is in normal operation, a small amount of gas will naturally gather to the upper part of the pipe, to a considerable extent, the water level in the valve drops, and the floating ball is discharged from the small hole at any time. If there is a power outage, stop the pump, when the water flow in the tube is empty, there will be negative pressure in the tube at any time, the float drops along the water, and the small hole is opened to drive the large hole for a large amount of air intake to ensure the safety of the pipeline. [2]

Pros

The compound exhaust valve has reliable performance and can discharge a large amount of air in the pipeline and a small amount of gas in the system operation to the outside air at high speed. The compound exhaust valve is easy to maintain and can be conveniently removed from the system for maintenance, while the water in the system will not flow out, so there is no need to empty the system. Only exhaust, no drainage, steam, water separation plate design using a special structure, to ensure that the exhaust will never drain. As long as there is pressure in the system, the compound exhaust valve will continuously exhaust.

Technical parameters

1, medium: water;
2, temperature: room temperature;
3., valve body: gray cast iron HT200;
4, float and plug head: stainless steel;
5, sealing material: butyl rubber;
6, valve body test pressure: 1.5mpa;
7, float, seal test pressure: 0.05-1.1MPA watertight