Diaphragm Valve

Weir Type (Flange and Screwed)

Weir Type Diaphragm Valves offer exceptional durability, reliability and control. The clean design completely isolates line media from the mechanical components of the valve.

Features & Benefits

· Bubble-tight shutoff (Class VI)

· Cavity free design

· Easy/low maintenance

· In-line serviceable (top entry)

· No stem seal leakage

· Standard Position indicator

Applications (Without Lining)

· Water and waste water

· Organic sludge

· Effluent treatment

· Lime solutions

· Gases (e.g. compressed air)

· Lubricating oil

Applications (With Lining)

· Acid (e.g. hydrochloric, sulphuric nitric)

· Moist chlorine

· Chlorinated water

· Demineralised water

· Salts

· Caustic solutions

· Lime Solutions

· Copper chemicals

Nominal Size: DN15-DN350

Face to Face: BS, DIN, MSS

Flange Drilling: ANSI#125/150, PN10/16, Table D/E, JIS

Screwed: ANSI B2.1 NPT, AS1722.1 Part1 BSPP

Pressure: Up to 16 Bar (Elastomer Diaphragm)* Up to 10 Bar (PTFE Diaphragm)*

*Max pressure varies across size range

Design Standards: EN13397-2001 (BS5156:1985) MSS SP88-1993-(R-01)

Testing Standards: EN12266-1 2002(BS6755 Part 1) MSS SP88-1993-(R-01)

Material

Body:-Cast Iron, Ductile Iron, Cast Steel, Stainless Steel

Bonnet Shell:- Cast Iron, Ductile Iron, Cast Steel, Stainless Steel

Hand Wheel:- Cast Iron, Ductile Iron (Coatings or Alternative material on request)

Spindle:- SS 304,SS 316

Compressor:- Cast Iron, Ductile Iron, Cast Steel, Stainless Steel

Fasteners:- ISO Grade 8.8, Stainless Steel

Lining:- Hard Rubber, Soft Rubber, EPDM, Butyl, Neoprene, Hypalon

Diaphragm Materials:- Natural rubber (NR)/ EPDM rubber/ Butyl rubber (IIR)/ Nitrile rubber (NBR)/ Neoprene rubber (CR)/ Hypalon rubber (CSM)/ Viton rubber (FKM/FPM)/ PTFE/EPDM backed/ PTFE/Butyl backed/ PTFE/Hypalon backed/ PTFE/Viton backed/ PTFE/Silicon backed/ TFM/PVDF/EPDM (3 PIECE)/ TFM/PVDF/EPDM (3 PIECE with titanium Connector)