Double flange butterfly valve

Valve Introduction

Double flange design for flat and convex flange connection. Design of novel structure , the overall small size, light weight. Have handle、electrical and turbine types.We have prepared samples for delivery every time.

Valve Technical Data


Nominal diameter  DN40-DN2500
Design standard  GB/T12238, BS EN 593, DIN 3354, API609,AWWA C504, BS5155,ISO10631
Top flange standard  ISO5211
Face to Face  GB/T1221, BS5155, EN558, DIN3202, ASME B16.10, API609, ISO5752
Flange drilling standard  GB/T17241.6, BS4504, DIN2501, ASME B16.5,BS10,AS2129,ANSI B16.1,ISO 7005-2
Testing standard  GB/T13927,BS5146, EN12266, API598
Type  Flange
Max service pressure  1.0MPA(10 bar) / 1.6MPA (16 bar)
Service temperature  -25 Deg – 130 Deg C (EPDM Seat)-20 Deg – 80 Deg (NBR Seat)-20 Deg – 180 Deg (PTFE Seat)
Operated  Lever / Worm Gear / Pneumatic / ElectricSuitable Medium  Water ,Gas ,Oil,etc.

Main Materials List

Body Material  Ductile Iron/Cast Iron/Carbon Steel/Stainless Steel/ Al-Bronze
Disc Material  Ductile Iron/Carbon Steel/Stainless Steel/ Al-Bronze
Seat   EPDM / NBR / PTFE



Design Data

41 DN400-DN1200-Model

Producing and Checking


Production Display


Deliviering & Packaging


WhatsApp Online Chat !