PBQ340H The utility model has the advantages of easy operation, easy operation, easy operation, easy operation, easy operation, easy operation, easy operation, easy to operate, and easy to operate.

1. General class: suitable for sewage treatment, pulp, gasification of aluminum, urban heating and heating requirements are strict occasions.  
2. Special oil and chemical industry: suitable for crude oil, heavy oil and other oil products, chemical industry corrosion-resistant, two-phase mixed flow medium. The temperature resistance can reach 425 ℃.  
3. Special gas class: suitable for the control of gas, natural gas and liquefied gas. The product structure is characterized by seal ring surfacing valve with different chromium alloy, tight sealing and corrosion resistance.  
4. Slurry special class: suitable for liquid, solid two-phase mixed flow or liquid transportation, chemical reaction crystallization precipitation or scaling industrial pipeline transportation. According to the different medium and temperature required by customers, the ball is overlaid with chromium molybdenum and vanadium alloy, and the valve seat is overlaid with chromium, molybdenum, chromium alloy and stainless steel alloy electrodes to meet the needs of different slurry transportation.  
5. Special class of pulverized coal ash and slag: it is applicable to the control of power plant, hydraulic slag removal or gas conveying pipeline. Wear resistance is required for the product. The ball is made of composite ball bimetallic, which has high rigidity.

1. The structure of the outer step of the valve seat and the inner step of the valve body design can effectively prevent the ball and the valve seat from jamming and valve seat separation.  
2. Large flow area and no flow resistance: This is because the ball is hidden in the valve cavity after opening, and there is no flow resistance direct current channel. The flow channel is smooth, and there is no ash accumulation or blocking phenomenon. The pressure loss is small, and the medium will not deposit in the valve cavity.  
3. Light switch: due to the principle of eccentricity, the ball and valve seat are completely separated when opening, without any contact, and the opening and closing torque is small, and the opening and closing can be completed by turning 90 degrees, and the operation is convenient.  
4. Reliable sealing and long service life: under the action of double eccentricity, when the valve is closed, the more close the eccentric ball and the valve seat, the better sealing effect can be achieved; the ball with hemispherical cutting and the valve seat have shearing and squeezing cutting functions, which can effectively remove the scale or dirt on the sealing surface and keep a good sealing. Under the action of double eccentricity, when the valve is opened, the ball and the valve seat are completely separated without any contact, and there is no friction between the ball and the valve seat, which effectively overcomes the problem that the sealing surface of the traditional ball valve always rubs against the sealing surface of the valve seat, so the sealing surface is well protected. The sealing surface is wear-resistant, and the valve seat and ball are provided with compensation. When the valve seat is worn and turned a little, it can still be reliably sealed. In addition, the valve seat can be adjusted or replaced to prolong the service life. This is the most significant feature of the hemispherical valve.

​PBQ340HMaterial of main parts of manual side mounted eccentric hemisphere valve
name	texture of material
valve body	QT450、WCB、ZG20CrMo、ZG1Cr18Ni9Ti
Valve shaft	2Cr13、1Cr13
Disc	Alloy nitriding steel, nitriding stainless steel, wear-resistant steel
valve seat	Alloy nitriding steel, nitriding stainless steel, wear-resistant steel
Bearing	Aluminum bronze, Fz-1 composite
filler	Polytetrafluoroethylene, flexible graphite

All the text, data and pictures in this paper are only for reference. For details of performance parameters, structural dimension parameters and price of pbq340h manual side mounted eccentric hemisphere valve, please contact us at Tel:

Shanghai Europe valve 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.