Due to the mechanical cam principle, the sealing force acting on the sealing surface of the valve is gradually increased during the process from opening to closing, that is, the sealing pressure is gradually increased until the valve is completely sealed from the surface of the closing part to the valve seat, and vice versa. This greatly improves the sealing state and sealing effect of the traditional ball valve; therefore, it has the characteristics of good adjustment performance, large flow capacity, excellent sealing performance and long service life.

1. Reasonable design, compact structure, small volume and light weight.  
2. Metal sealing pair (ball, valve seat) design, using advanced ball and seat hardening technology, can be used in high temperature and other harsh conditions, with fire, anti-static, explosion-proof functions
3. It has the design of preventing misoperation and valve rod from flying out
4. When the valve is closed, the sealing pair has small friction force, low torque and long service life due to instantaneous friction.  
5. The design of non-metallic sealing pair can be used in water, steam, oil and other clean medium conditions, and the operation is active.  
6. It can be equipped with electric and pneumatic devices to realize remote automatic operation.

(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.

Product Name: metal hard seal eccentric hemisphere valve
Product series: eccentric hemisphere valve series
Nominal diameter: Dn40 ~ DN2000, nps11 / 2 "~ 80"
Nominal pressure: pn0.25-4.0mpa, class150-300
Adopted standards: GB, ANSI, DIN, JIS, BS, API
Working temperature: - 29 ~ 650 ℃