2-WAY BUTTERFLY VALVE FITTED WITH PNEUMATIC DOUBLE ACTING / SPRING RETURN ACTUATOR-1260 SERIES

A butterfly valve is from a family of valves called quarter turn valves. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is open, the disc is rotated a quarter turn so that it allows unrestricted passage. The position of the disc is affected from outside the valve.

There are different kinds of butterfly valves, each adapted for different pressures and different usage. The resilient butterfly valve, which uses the flexibility of rubber, has the lowest pressure rating. The high-performance butterfly valve, used in slightly higher-pressure systems features a slight offset in the way the disc is positioned. Which increases the valve's sealing ability and decreases its tendency to wear. The valve best suited for high pressure systems is the tricentric butterfly valve, which makes use of a metal seat and is therefore able to withstand a greater amount of pressure.

Technical Specification

Series

:

1260 Series

Description

:

2-Way Butterfly Valve fitted with Pneumatic Double Acting / Spring Return Actuator

Material Specifications for PN10 Rating Butterfly Valve

Available Sizes

:

DN50 to DN300

Pressure Range

:

PN10

Body Material

:

Cast Iron to BS 145 Gr. 200

Body Liner

:

Nitrile Rubber or EPDM

Disc Material

:

Cast Iron to BS 1452 Gr.250

Shaft Material

:

BS970 – 080M40

Characteristic

:

ON-OFF / Linear Control up to 60° Opening

Pressure Temperature

:

Nitrile - 70°C / EPDM - 90°C

Material Specifications for PN16 Rating Butterfly Valve

Available Sizes

:

DN50 to DN600

Pressure Range

:

PN16

Body Material

:

Cast Iron to BS 1452 Gr. 220 / SG Iron to BS 2789 Gr 420/12 / SS to ASTM A 351 Gr CF8/CF8 m / CS to ASTM A 216 Gr WCB

Body Liner

:

Black Nitrile EPDM (General purpose)

Disc Material

:

SG Iron to 2789 Gr 420/12 nylon coating / AI. Bronze to BS 1400 Gr. AB2 or AB1 / SS to ASTM A 351 Gr. CF8/CF8 m edge polished

Shaft Material

:

AISI 410 PTFE coated for permanent dry lubrication

Bearings

:

PTFF Sheet bearings provided for valves with SS discs. Sizes 350 to 600 mm have Phosphor Bronze bearings as standard

Working Temperature Range

For Oils, Fuels, Water, Air, Gases, Powders, Pellets, Slurries etc.,

:

Hydrocarbons

(Except Aromatics) 10°C to 90°C

Other Liquids 10°C to 80°C

Dry Services 10°C to 60°C

Working Temperature Range

For Brines, Sea water, Estuary water, Marine Bilge & Ballast Systems

:

Liquids 10°C to 80°C

Working Temperature Range

For Steam, Water, Hot Gases, Powders, Slurries and aqueous slurries of an abrasive nature

:

Liquids 10°C to 120°C

Dry Services 10°C to 100°C

Assembled with

:

  1. Pneumatic Rotary Double Acting Stayput Type Actuator
  2. Spring Return Actuator available for Fail Safe Operation

Specifications