KDV Diaphragm Valve Screwed - Weir type / Product image

KDV Screwed – Weir Type

KDVs 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

  • Water and waste water
  • Organic sludge
  • Effluent treatment
  • Lime solutions
  • Gases (e.g. compressed air)
  • Lubricating oil

Nominal Size:  DN15-DN80
Face to Face: Manufacturer’s Standard
Flange Drilling: 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

Material of Construction

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

Design Standards

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

Testing Standards

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

Brochures

kdv weir type range brochure

WT Range Brochure

1.92 MB
KDV actuation brochure

Actuation Brochure

1.45 MB
KDV weir type diaphragm brochure

WT Diaphragms Brochure

561.62 KB

Data Sheet

Screwed
PDF ICON

DN15-DN80 Rising Handwheel

339.22 KB
PDF ICON

DN15-DN80 Non Rising Handwheel

305.89 KB

Installation and Operation Manual

PDF ICON

KDV Diaphragm Valves Service Instructions

955.41 KB