CARVThe clean water compound exhaust valve is used in the place where there is closed air at Zui high point on the pipeline to remove the gas in the pipe to dredge the pipe head, so as to achieve normal operation. If the exhaust valve is not installed, the liquid flowing in the pipe will generate dynamic heat, causing gas to form a short circuit, so that the water outlet capacity of the pipeline can not meet the design requirements. Secondly, when the pipeline is in operation, power failure and pump shutdown will occur, and the negative pressure of the pipeline will cause the pipe If the pipeline vibrates or breaks, the exhaust (suction) valve will quickly reverse the air suction into the passenger to prevent the pipeline from vibration or rupture.

 

 

       When the water enters the pipe, the plug stops at the lower part of the positioning frame to exhaust a large amount of air. When the air is exhausted, the water enters the valve to float the ball and drive the plug head to close, and then stop the exhaust. If the pipeline is in normal operation, a small amount of gas will naturally gather in the upper part of the pipe. To a certain extent, the water level in the valve will drop, and the floating ball will drop at any time, and the gas will be discharged from the small hole. In case of power failure and pump shutdown, when the water flow in the pipe is empty, negative pressure will appear in the pipe at any time, and the floating ball will drop down along the water. The small hole will be opened to drive a large amount of air into the large hole to ensure the safety of the pipeline.

1. Medium: clear water
2. Service temperature: normal temperature
3. Valve body: gray cast iron HT200
4. Float and plug: stainless steel
5. Sealing material: nitrile rubber
6. Valve body strength: 1.5MPa
7. Sealing test pressure: 0.05-1.1mpa, no water leakage

NO	name	texture of material
1	valve body	HT200
2	Valve cover	HT200
3	Floating ball	304stainless steel
4	Disc	Brass, stainless steel
5	lever	H59brass
6	Stopper	stainless steel

Nominal diameter（DN）	H	L	L1
20/25	400	290	180
50	480	370	200
80	600	420	250
100	600	420	250
150	750	600	350
200	870	670	410

(1) In strict accordance with the requirements of the contract, to provide qualified products that meet the design standards.
(2) Strictly check and control the quality of raw materials, components and accessories.
(3) Ensure that the processing technology of the equipment is perfect and the detection means are complete. Products will never leave the factory with defects.
(4) Be fully responsible for the supply, quality, equipment performance, technical interface, service and other aspects of the subcontractor. The key parts specified in the contract must meet the requirements of relevant qualification and be approved by the demander.
(5) Provide relevant department standards and drawings to the supervision unit according to the contract, provide convenience for the supervision, and inform the demander and the supervision representative of the shutdown parts of the supervision equipment 7 days in advance. The supervision assigned by the demander is to urge us to produce qualified products according to the standards, but it does not reduce all our quality responsibilities.
(6) The quality defects in the process of equipment manufacturing shall be timely reported to the demander and the supervision representative without concealment. If the equipment defect exceeds the standard specified in the contract, the supplier shall replace it unconditionally. In the process of installation and trial operation, if there are quality problems of the equipment, the problems should be dealt with first, and then the responsibilities should be clarified. Everything should be based on the requirements of project progress.
(7) In case of any accident, we will replace and repair the supplied equipment free of charge as soon as possible until the demander is satisfied.
(8) In case of missing parts or missing parts caused by other reasons in the process of unpacking, we are responsible for making up the missing parts for free as soon as possible. We shall be responsible for the quality problems found during the installation and commissioning of the equipment and in the operation of the equipment in the future.
(9) Provide the demander with all technical data and drawings according to the contract on time. Have the obligation to invite the demander to participate in our technical design audit when necessary.
(10) According to the time required by the demander to the site for technical services, guide the demander to install, trial run and trial production according to the requirements of our technical data and drawings.
(11) For the supporting equipment related to the contract equipment purchased by the demander first, we will actively provide the technical conditions and data meeting the equipment interface requirements.
(12) Strictly implement the minutes or agreements of the meeting held by both parties on relevant issues.
(13) According to the provisions of the contract, free business training courses on equipment installation, commissioning, use and maintenance technology shall be held for the demander.
(14) Strengthen pre-sale, in-sales and after-sales services, and implement "24-hour service", "advanced service", "whole process service" and "life-long service" in the whole process of product manufacturing, installation, commissioning and overhaul.
(15) After receiving the quality problem information reflected by the demander, reply within 24 hours or send service personnel to the site as soon as possible, so as to ensure that the user is not satisfied with the quality and the service does not stop.
(16) Free for the product to provide lifelong maintenance, where our factory users, have established a detailed user file, our factory after-sales service. Regular return visit and inspection system are implemented to guide the daily maintenance of users, and timely point out and solve possible faults.
(17) At any time to meet the demander's requirements for spare parts, lifetime to provide users with high-quality and low-cost spare parts.