Sion-foreign Joint Venture Zhejiang CTV Valve Co.,Ltd.

PQ double eccentric valve is half in absorbing foreign advanced technology and development of new products, but also successfully fill the blank of domestic valves varieties in product innovation, is earnest balance valve, gate valve, the advantages and disadvantages of the valve, under the precondition of similar products from Germany and development of new products, localization of all points appraisal conclusion: in some aspects of more superior performance on the gate, globe valves and valve etc products, application in petroleum, chemical, metallurgy, electric power, and its core technology industries, are the domestic origination, its unique design, novel structure. Products on the market, customers consent. First: valve adopts eccentric principle, through fellowship tight tight and transmission mechanism to adjust the closed gate, sealing and sphere are hardfaced with metal surface contact, double seal rings eccentric structure in the ball valve opens in the body cavity, circulation, and carrying the valve is not washed, without resistance. Close valve spool dont wash, closing valve spool along with progressive spherical valve, effectively, excision of shear function scaling obstacles, reliable seal. It is easy to scaling medium transmission. Second: adopt dual metal valve and the hemisphere, in the sphere of alloy, seat hardfacing alloys are surfacing, with a special treatment, sealing combination of anticorrosion, wear-resisting, high temperature resistant, meet various types of different occasions demand. Third: sealed tight, the harmful gas transmission of zero leakage. The first four features: seat and sphere with compensation, when seat wear, closing to turn a reliable seal, still can prolong life, in addition, the user will shake off a plate bolt, reworked or replace seat is still available after the valve seal, avoid the disadvantages of failure.
According to the needs of user, dual metal alloy # different choices available for sealing, corrosion resistance, temperature and requirements of different industrial department strict seal.
The main purpose of the products and product features
1, general valve: applicable to wastewater treatment, paper pulp, alumina, urban heating requirements of being.
2, oil chemical industry: suitable for special valves for crude oil, crude oil, chemical industry etc all kinds of corrosion, two-phase hybrid flow media. Temperature can reach 425 c.
3, gas valve for: suitable for gas, natural gas, liquefied petroleum gas transmission control. Product structure characteristics are different valve surfacing sealing chromium alloy, sealed tight and corrosion resistance.
4 and slurry valves: suitable for liquid, solid two-phase hybrid flow or liquid transportation of chemical reaction is crystallization precipitation or scaling industrial pipeline. According to customer needs product structure characteristics and requirements of different temperature, medium chromium ball benefit, molybdenum, vanadium alloy valve surfacing by chromium, molybdenum alloys, chromium alloy, stainless steel alloy electrode surfacing meet different needs of slurry.
5, coal ash special valves: applicable to plant, hydraulic slag removal or gas pipeline control. Product requirements wear-resisting performance, the sphere by combination ball type dual metal, high rigidity and very wear-resisting, seat by the integral wear-resisting steel or the hardfacing.
Half of the ball
1, valve design steps and the body in the design of structure, steps match very effective way to prevent the sphere and seat happen resistance, seat from wait for a phenomenon.
2, the circulation of large area without flow resistance: because the ball valve opens in cavity flow resistance, no dc channel, wont appear smooth flow, or jammed formation pressure loss of small, medium not deposition in the body cavity.
3, switch light: because the eccentric principle, opens the spheroid and seat completely without any contact from open, open torque, turned 90 degrees, convenient operation can be open.
4 and reliable sealing long use life: this role in double eccentric valve is closed, the spheroid and eccentric valve shut, fully meet good sealing purpose, The sphere and seat hemisphere incision with shear and squeezed between cut effect, can effectively remove the dirt or sealing scaling, maintain good sealing. This role in double eccentric valve opens, the spheroid and seat completely open, without any contact from the sphere and seat wont produce friction, very effective to overcome the traditional ball valve seat sealing seal with the ball, it always friction sealing are well protected. Sealing seat and wear-resisting, with compensation, when the ball seat wear, after a while, and then turn growth can still reliable seal, the other seat adjustable or replacement, prolong service life. This is the most significant characteristic of half a ball.
5, according to the different kinds of temperature, medium, the production of various abrasion resistance, corrosion resistance, temperature, etc.
Execution standard
1, design and manufacture of GB/T12237-1989, API608
2, the inspection and test: the GB/T1392-1992, API598
3, flange: JB/T79.1 ~ 4-2000, ASME/ANSI B16.5
Length: 4 and structure of GB/T12221-1989, ASME/ANSI B16.10