Butterfly Valves

View: 402 - Date Submitted: 24/12/2019

The valve body shall be one-piece wafer or lug design with extended neck and a concentric disc and seat configuration to allow for 2"- 48” of piping insulation, have flange hole drilling per international flange standards and be provided with a non-corrosive bushing and self-adjusting stem seal.

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Content

Product Description

Category: Butterfly Valve

Design	API 609
End Connection	Wafer type, Lug type, Flanged , Welded
Operation	Manual/Pneumatic/Electric
Size Range	NPS 2"-60"(DN50-DN1500)
Pressure Rating	ASME Class 150~2500(PN16~PN420)
Body Material	Cast Iron,Ductile Iron,Carbon Steel,Stainless Steel
Seat Material	EPDM,NBR,PTFE,Viton,Neoprene,Hypalon,Silion

Flange locating holes shall be provided on wafer and lug bodies to allow for
quick and precise alignment during valve installation. The valve disc edge and
hub on metal discs shall be spherically machined and hand polished for
minimum torque and maximum sealing capability. The valve stem shall be
one-piece design and be mechanically retained in the body neck and no part of
the stem shall be exposed to the line media. The seat shall totally encapsulate
the body isolating the body from the line media and no flange gaskets shall be
required.
The wafer and lug valve shall be rated for bubble-tight shut-off for bidirectional service to 16 Bar on sizes 2”-12” (50mm-300mm) and to 10Bar on sizes 14”- 48” (350mm-1200mm). The valve shall be tested for tight shut-off to 110% of the rated pressure.

Feature

1.Small in size and light in weight. Easy installation and maintenance. It can be mounted wherever needed.
2.Simple and compact construction, quick 90degrees on-off operation.
3.Minimized operating torque, energy saving.
4.Bubbles-tight sealing with no leakage under the pressure testing
5.Wide selection of materials, applicable for various medium
6.Long service life. Standing the test of tens of thousands opening/closing operations.
7.Flow curve tending to straight line. Excellent regulation performance.

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