Plastic Lined - WT

Weir Type Diaphragm Valves – Plastic Lined

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

  • Acid (e.g. hydrochloric, sulphuric nitric)
  • Moist chlorine
  • Chlorinated water
  • Demineralised water
  • Salts
  • Caustic solutions
  • Lime Solutions
  • Copper chemicals
Nominal Size:  DN15-DN200
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

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

WT Range Brochure

1.92 MB

Actuation Brochure

1.45 MB

WT Diaphragms Brochure

561.62 KB

Data Sheet

MSS SP88-1993-(R-01) – Raised Face

DN25-DN150 Rising Handwheel

346.73 KB

DN25-DN150 Non Rising Handwheel

265.90 KB
EN558-1 Series 1(DIN3202-F1) – Raised Face

DN15-DN150 Rising Handwheel

348.09 KB

DN25-DN150 Non Rising Handwheel

265.97 KB
EN558-1 Series 1(DIN3202-F1) – Full Face

DN15-DN150 Rising Handwheel

358.43 KB

DN25-DN150 Non Rising Handwheel

286.90 KB
EN558-1 Series 7(BS5156) – Raised Face

DN15-DN150 Rising Handwheel

348.33 KB

DN25-DN150 Non Rising Handwheel

267.23 KB

DN200 Non Rising Handwheel

267.40 KB
EN558-1 Series 7(BS5156) – Full Face

DN15-DN150 Rising Handwheel

621.29 KB

DN25-DN150 Non Rising Handwheel

287.28 KB

Installation and Operation Manual

KDV Diaphragm Valves Service Instructions

955.41 KB