Cast Iron /Ductile Iron  Double Offset Butterfly Valve 
BS/DIN/ANSI/JIS  Butterfly Valve

• Double Offset Butterfly Valve

• Flanged Butterfly Valve

• Wafer Butterfly Valve

• Lug Butterfly Valve

Butterfly Valve

Double Offset Butterfly Valve
PRODUCTION STANDARD
 

Features

• Eccentric action reduces torque and seat cantact during operation extending valve lift
• Suitable for on/off and modulating service

• Face to Face isin accordance with ISO5752, AS4795 and EN558 seriers 14
Double flanged butterfly valves

• Epoxy Back Seat ensures on corrosion behind the seating area
• Dovetail Seat Locking construction eliminates the need for seat retaining mechanisms
that can loosen and corrode

• Subject to size and damage, the seat can be repaired in the field and in certain cases
repaired from outside the valve without disassembly from the main line

• All iron  Parts are fusion boned epoxy coated for corrosion resistance and long life
• Lifting lugs and foot mounting points are integral to the body for easy transportation

• Fully rated bi-directional design
• Top plates are in compliance to ISO5211 for mounting actuators

• Disc connection to shaft is by blind bolting eliminating potential leak paths
• Body and Disc consturction is ductile iron for higher stength and ligher weight

• All valves  have raised face flanges
• Optional 316 stainless steel disc edge coating using HVOF profess
• All flange holes are drilled through

Applications

Waste Water, Distribution Lines, Water Treatment, HVAC

Temperature

+130 °C (EPDM)
+78 °C (NBR)

Specifications

Certificate: ISO9001, CE0035, WRAS

U section flanged butterfly valve 

Design: EN593/API609
Class: PN10/16, 125Lbs
Face to face: API 609; EN558 1-20 Series
Flange Connection: GB, DIN, BS, JIS, ANSI
Testing: API 598
Size:DN50-DN1200
Operator: Handle Lever, Worm Gear, Electrical Actuator, Pneumatic Actuator

Material:
Body: Cast Iron (ASTM A126CL. B , DIN1691 GG25, EN 1561 EN-GJL-200,EN-GJL-250); Ductile Cast Iron (ASTM A536 65-45-12, DIN 1693 GGG40, EN1563 EN-GJS-400-15); Stainless Steel (ASTM A351 CF8, CF8M; CF3, CF3M); Carbon Steel (ASTM A216 WCB)
Stem: Stainless Steel (ASTM A276 Type 316, Type 304, Type 410; ASTM A582 Type 416)
Taper Pin: Stainless Steel (ASTM A276 Type 410,Type 304, Type 316)
Seat: NBR, EPDM, Neoprene, PTFE, Viton
Disc: Nickel Plated Ductile Cast Iron (ASTM A536 65-45-12, DIN 1693 GGG40, EN1563 EN-GJS-400-15); Stainless Steel (ASTM A351 CF8, CF8M; CF3, CF3M; EN 1.4408, 1.4469); AL-Bronze (ASTM B148 C95400)
O-Ring: NBR, EPDM, Neoprene, Viton
Bushing: PTFE, Lubricated Bronze

Why Choose US

We are a professional manufacturer and supplier of valves, pipes and fittings which are widely used for water, oil and gas pipe lines
We have been supplying the valves and fittings to Europe, Asia, Middle East countries and Amercian markets for 15 years
Our factory has obtained ISO9001, CE0035 and API approval certificates for our valves and fittings made of iron, steel and copper alloy with design to DIN, BS, ANSI, JIS standard
We can also manufacture valves and fittings according to client's design

We test leakage of each roll before braiding, then we cut 300mm and crimp it to test
burst pressure after brading.

We use CNC Lathes Machine for end fittings production. Machine system, knife and inspection
tools are all imported from Japan.

We use Techmaflex Crimping Machine which is imported from France. This machine has
accurate and stable performance for crimping because it is produced for PTFE hose crimping only.
Our service
We promise the quality for 24 months and also supply custom service
Long service life. Standing the test of thousands opening/closing operation.
Wide selection of materials, applicable for various media.
other products 

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