KDV WEIR TYPE DIAPHRAGM VALVE
Rubber Lined Weir Type Diaphragm Valve
KDV’s Rubber Lined Diaphragm Valve combines a proven Weir Type design with a selection of rubber lining materials for reliable flow control in demanding industrial applications. The valve isolates process media from its mechanical components and is available with lining options selected to suit different process conditions.
FEATURES AND 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 for Rubber Lined Diaphragm Valves
- 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
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)
DIAPHRAGM MATERIALS
10 – Natural rubber (NR)
20 – EPDM rubber
30 – Butyl rubber (IIR)
40 – Nitrile rubber (NBR)
50 – Neoprene rubber (CR)
60 – Hypalon rubber (CSM)
70 – Viton rubber (FKM/FPM)
92 – PTFE/EPDM backed
93 – PTFE/Butyl backed
96 – PTFE/Hypalon backed
97 – PTFE/Viton backed
98 – PTFE/Silicon backed
9D – TFM/PVDF/EPDM (3 PIECE)
9R – TFM/PVDF/EPDM (3 PIECE
with titanium Connector)
NB: Vacuum grade diaphragms available on request
MATERIALS OF CONSTRUCTION
