High Performance Double Eccentric Butterfly Valve China factory
What's High performance butterfly valve ?
High performance butterfly valve is an innovative double offset design product with advanced world leading technology. This butterfly valve has a unique structure with ultra reliable sealing performance, wide working conditions and low operation torque.
Double eccentric butterfly valves,with a seal ring fixed by cover plate,It will make the valve has a nonstop fixing surface on the circle and make the valve didn't touch the seat at all when it is completely opens. This design will make the seat encounter less friction and accordingly will extend its lifetime. In common application,this bi-directional balance butterfly valve is restricted to class 150.
High performance butterfly valve`s sealing ring is made of elastomer fit in disc, it availabe be used in unidirectional sealing application, Commonly used in the water or municipal water appliacation.
Main features of NORTECH High performance butterfly valve ?
High performance butterfly valve
Design standard: BS EN593
Face to face length : EN558-1/ISO5752 series 14& ISO5752 series 13
Flange dimension and drill : BS EN1092/BS4504 (DIN2501)
Size: DN350 – DN3000/ 14"-120"
Pressure rating:PN6- PN10-PN16-PN25-PN40
Application: water, drinking water, sewage, low-corrosive liquid etc.
Main feautres of High performance butterfly valve :
Longer service life due to tilted disc
The tension on the disc is released after a few degrees of opening which minimises wear of the disc seal. Furthermore, the design minimises the compression of the sealing which ensures low operating torques.
Twin seat designs
The integral seat design has a machined and epoxy coated ductile iron seat integrated in the body. The stainless steel seat design has a replaceable seat ring of stainless steel sealed with an O-ring to avoid leakages under the seat ring.
Shaft design features
The shaft sealing is replaceable under pressure to enable easy maintenance. Sealings of EPDM secure tightness from inside and out, and NBR sealings protect against impurities and fluids from outside.
Disc seal optimised for high performance
The disc seal is shaped to secure fixation in correct position providing a very reliable function. The excellent rubber quality makes it possible to reduce the amount of rubber which ensures low closing torques. The EPDM sealing is approved by ACS and WRAS.
Type of Operation for High performance butterfly valve
for High performance butterfly valve ,we provide
Manual gearbox operation,Pneumatic actuator,electric actuator,and hydraulic acatuators for your option.
Technical specifications of NORTECH High performance butterfly valve
| Design and Manufacture | EN 593/API609 |
| End Connection | Double flanged |
| Operation | Manual/Pneumatic/Electric |
| Size Range | NPS 14"-120"(DN350-DN3000) |
| Pressure Rating | 150 psi, 275 psi or 500 psi(PN10-16-25) |
| Face to face | EN558-1 series 13/series 14 |
| Flange | EN1092-2,ASME B16.5,AWWA C207,ASME B16.47 |
| Inspection | EN / AWWA C504/C519 / NSF 61/372 Certified |
| PART NAME | Material |
| BODY | ASTM A536 65-45-12/ EN-JS 1030 (GGG-40), EN-JS 1049 (GGG 40.3),Stainless steel (1.4408) |
| DISC / PLATE | DI+NI,CF8/CF8M,C954/C958 EN-JS 1030 (GGG-40) Stainless steel (1.4408) |
| SHAFT / STEM | SS431/SS420/SS410/SS304/SS316 |
| SEAT / LINING | NBR/EPDM/VITON /PTFE/PFA |
| TAPER PINS | SS416/SS316 |
| BUSHING | BRASS/PTFE |
| O-RING | NBR/EPDM/VITON /PTFE |
| KEY | STEEL |
Product Show: High performance butterfly valve
Product Application: High performance butterfly valve
What is the High performance butterfly valve used for?
This kind of High performance butterfly valve is widely utilized in
- Dams & hydropower
- Industrial,
- Irrigation,
- Power plants,
- Sewage & wastewater treatment,
- Water treatment
