The specification and category of full pressure high-speed exhaust valve shall meet the requirements of pipeline design documents
The model of full pressure high-speed exhaust valve shall indicate the national standard number requirements. If it is an enterprise standard, the relevant description of the model shall be indicated.
The working pressure of full pressure high-speed exhaust valve is required to be greater than or equal to the working pressure of the pipeline. On the premise that the price is not affected, the working pressure that the valve can bear shall be greater than the actual working pressure of the pipeline
For the manufacturing standard of full pressure high-speed exhaust valve, the national standard number shall be indicated. If it is the enterprise standard, the enterprise documents shall be attached to the procurement contract. This kind of valve is in the pipeline
model：QSP	Nominal diameterDN：DN50-DN400	Use pressureMPa：1.0~1.6Mpa
Connection mode: flange	Form: automatic	Main functions: suction and exhaust
Medium: water	Material: cast iron, cast steel, stainless steel	Standard: national standard, Ministry of machinery standard or customized non-standard

 QSPThe full pressure and high-speed double port exhaust valve is the advanced cylinder type exhaust valve of Zui in China at present. In terms of structure and performance, it completely surpasses the ordinary high-speed (double port) exhaust valve and composite double port exhaust valve. For the gas in the pipeline, whether it is multi-stage water column, alternating gas column, under pressure or without pressure, it can continuously discharge the pipeline at high speed. The floating ball does not top on the exhaust port, there is no jamming problem, and a small amount of gas The body can be discharged through micropores. When negative pressure occurs in the pipeline, gas can be injected to prevent gas contamination and buffer water hammer pressure rise. It can relieve the danger of new pipeline test run and exhaust difficulty, reduce pipe burst accident of urban pipe network, reduce resistance and energy saving, reduce pressure oscillation, and improve the safety and reliability of the whole water supply system and various equipment.

The full pressure high-speed exhaust valve adopts flange connection, which is suitable for suction and exhaust on various industrial and mining pipelines, such as power plant circulating water pipeline, reservoir water intake project, power plant water transmission pipeline chemical industry, water supply pipe of water supply company and other industrial and mining pipelines with pressure of 1.0 ~ 1.6Mpa and working temperature ≤ 100 ℃.

1. The outlet of the water pump, on the horizontal pipe before the check valve, exhausts when the water pump starts and exhales when it stops.  
2. On the horizontal pipe at the downhill of pipeline.  
3. When the pump stops, it may cause vacuum or negative pressure.  
4. In the long distance pipeline, the horizontal pipe at every 1-1.5km.  
5. The Zui height of the horizontal pipe and the top of the riser.

 

 

model	DN	D	D1	D2	Z-d	L	H
QSP1.0	16,25,32,45,52	195	160	135	4-18	300	620
80	195	160	135	8-18	500	620
100	215	180	155	8-18	500	620
150	280	240	210	8-23	620	740
200	340	295	266	8-23	620	780
250	395	350	319	12-23	620	820
300	445	400	370	12-23	620	850
400	565	515	16-25	700	910

>

The exhaust valve shall be installed vertically on the horizontal pipe.  
2. To facilitate maintenance, an isolation valve should be installed under the exhaust valve.  
3. The exhaust valve shall not be installed in strong acid or alkali environment.  
4. Anti freezing measures should be taken for the vent valve of Tongtian, and the kiln well should be built to protect and prevent freezing. QSP full pressure high-speed exhaust valve is an advanced cylinder type exhaust valve of Zui in China. Its structure and performance completely surpass ordinary high-speed (double port) exhaust valve and composite double port exhaust valve. It is applied to various industrial and mining pipelines, such as power plant circulating water pipeline, reservoir water intake project, power plant water pipeline chemical industry, water supply pipe of Zilai water company, etc.

Service commitment
(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.