KDV WEIR TYPE DIAPHRAGM VALVE
Halar Coated Weir Type Diaphragm Valve
KDV’s Halar Coated Diaphragm Valve combines a Weir Type design with an ECTFE (Halar) coating for dependable flow control in demanding industrial applications. The valve design isolates line media from the mechanical components, while the coated construction provides a durable solution for compatible 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 Halar Coated Diaphragm Valves
- Water and waste water
- Organic sludge
- Effluent treatment
- Lime solutions
- Gases (e.g. compressed air)
- Lubricating oil
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
