Carbon Steel Stainless Steel Matel Seat Flange Rotary Valve

Specifications 1.Zero leakage in air tight test;

2.Good sealing in bi-directional;

3.Excellent anti-corrosive performance.

           Product Description 1. Overview and Purpose
     Two-way flow hard sealed rotary ball valve,a new  improved product,our company  accumulated experience in the design and manufacture,use and maintenance of valves over the years ,according  to  the market demand . The valve can not only reliably cut off  at the forward pressure, but also can be sealed reliably in a reverse pressure. The valve  use semi-ball valve seal structure and principles, shape with butterfly structure, so that which includes these characteristics : small size, light weight ,and  bi-directional sealing , small seal friction, durable, lightweight hoist and other properties. Therefore, its value is far higher than half ball valve.        The  valve widely used in the pump outlet end, pipe network system, recycling water system, backflow prevention systems and so on, can be used in metallurgy, mining, petrochemical, chemical, power, environmental, municipal and industries to shutoff and regulate  the pipeline .At the conditions that required bi-directional seal valve,one rotary valve  is equivalent of two one-way sealing valve.   2. the main types and working principles
1)main types: 

Driven  type	Worm Gear	Hydraulic	Pneumatic	Electric
Connect  type	Flange
Sealing  material	Stainless Steel	Carbon Steel	Hard Alloys
Pressure	PN16	PN10	PN16	PN25	PN40
Body material	WCB	Stainless Steel

  2) the working principle:        The most important feature of  two-way flow valve is both good sealing in the forward pressure and back pressure. When the forward pressure work, medium pressure push forward a gap displacement valve plate, valve plate sealing surface against the valve seat sealing surface  and transfer pressure, let the valve seat be  pushed  to the body stage, making a good seal. When the reverse pressure work, the valve will appear  contrary action   3. Technical performance specifications

Nominal pressure (MPa)	pressure test(MPa)			Working  Temp (℃)	Working Medium
	Shell test	Seal test	Back   pressure
1.0	1.5	1.1	1.1	up to 300 ℃	Oil,Gas,Water...
1.6	2.4	1.76	1.76
2.5	3.75	2.75	2.75
4.0	6.0	4.4	4.4

       Packaging & Shipping    Free of Fumigation Box: plywood boxes, wooden cases.   Company Information    Wenzhou Jiasheng Valve Co., Ltd, is a professional valve manufacturer since 1995. Our main products include high temperature regulating metal to metal butterfly valves, rubber sealing butterfly valves, hydraulic butterfly valves, telescopic butterfly valves, ball valve, gate valve and etc. At present, we mainly produce/manufacture "ISO, API, ANSI, DIN, BS, EN, GB, JB" standard valves, also special valves according to the requirement of clients.