Double flange Butterfly Valve

Standard: 

1) Design and manufacture: API609, ANSI B16.1 
2) Face to face dimensions: BS EN 558-1 
3) Test and inspection: API 598 
4) Install between flanges: ANSI 16.10(CLASS 125), DIN2501( PN10/16), BS4504(PN10/16)

Optional Materials:

Body: Cast Iron GG25, Ductile Iron GGG40, GGG50

Disc: Ductile Iron+Nickel painted,SS304/316,AL-BRONZE C954

Seat: NBR ( Buan-N), EPDM, VITON, PTFE

Shaft & Pin: SS410, SS416, SS304, SS316

Actuator: Lever, Worm Gear, Pneumatic and Electric Actuator

Speical service:

(1) Choice of the type of the equipment.
(2) According to the customer's special requirement, design and make the products.
(3) Train the technical staff for the customer.
(4) Offer the technological consultation of new, special, difficult construction or draft the suitable construction scheme.
(5) According to the customer request, provides the CAD Simplified blueprint to the customer confirmation .

Standard Features:

*All wafer and lug type BFV are designed to allow for 2" of insulation

*Wafer body features 2 or 4 flange alignment holes for easy installation

  Lugged body with drilled and tapped holes may be used for dead-end service(Please specify when ordering)

*ISO 5272 top flange for easy actuation

*One-piece shaft design, blow-out proof, ensures positive disc positioning and accurate flow control.

*3 shaft bushing/seals provide shaft support for proper alignment and backup for the primary shaft seal formed by the disc/seat interface

*disc edge is machined and polished 360º to assure low friction, which results in low operating torque plus increased seat life

*Precision taper pins, vibration-proof, ensure positive shaft-disc connection

*The phenolic-backed, non-collapsible, resilient seat is perfectly secured and fully lined in the body, which isolates the body components from the media and provides the primary shaft seal. Seat is field replaceable.

*Absolutely tight shut-off in either flow direction

*Can be installed in any desired direction

Typical application:

1.Water works and water resource project

2.Environment protection

lic facilities

4.Power and Public utilities

5.Building industry

6.Petroleum, chemical

7.Steel, metallurgy

8.Paper making industry