weir_type_diaphragm_valve
weir_type_diaphragm_valve_line_diagram

Standard Scope Of Supply

NO. Description MOC
1. Lined Body Ductile Iron GGG40.3 FEP Lined †
2. Bonnet Ductile Iron / WCB
3. Spindle C.S PTFE Coated
4. Compressor Pin Type Ductile Iron/WCB
5. Handwheel ABS / Mettalic
6. Opening Indicator Sleeve HDPE
7. Diaphragm (pin Type) PTFE Backed With Neoprene Rubber
8. Compression Spring S.S.
9. Dowell Pin Spring Steel
10. Stud S.S.
11. Nut S.S.
12. Plain Washer S.S.

Salient Features

  • IDEAL for Industrial & Corrosive Duties.
  • 100% Leak tight (Class VI Leakage Rate) Operation Low Maintenance
  • Best performance in Throttling & Flow control applications.
  • Complete isolation of working parts from process stream

Technical Specifications

  • Design Standard : BS EN 13397:2002 (Formerly BS 5156)
  • Face to Face : BS 2080, DIN 3202, MSSP 88, EN 558
  • Flange : As per ANSI B16.5 / B16.42
  • Drilling : ASA #150 /DIN 2632/33 / BS 10 TABLE D, E, F
  • Lining Thickness : 3 to 5 mm
  • Testing Standard : BS EN 12266-1&2 (2003)
  • Material
  • Dimensional
  • Test & Inspection
  • Optional Design

Body Material Options

  • Ductile Iron GGG40.3 / ASTM A395
  • Cast Steel ASTM A216 Gr.WCB
  • ASTM A351 Gr. CF8 / S.S.304
  • ASTM A351 Gr. CF8M / S.S.316

Lining Material Options

  • PFA – ASTM D 3307
  • FEP – ASTM D 2116
  • ETFE – ASTM D 3159
  • PVDF – ASTM D 3322
  • PP – ASTM D 4101

Dimensional Data

  • * As per BS EN 558 – 2, Table-7, Series-7
  • # Testing in accordance with BS EN 12266-1(2003) Table A.3
  • § Torque measured at rP = 11 Bar at Room Temperature in Wet Condition (Test Media – water).
ANSI #150 FLANGED RF
SIZE L$ (mm) ØC (mm) Torque§  (N.m)
DN15-1/2” 108 35 80
DN20-3/4” 117 43 85
DN25-1” 127 51 115
DN40-1 1/2” 159 73 155
DN50-2” 190 92 155
DN65-2 1/2” 216 104 190
DN80-3” 254 127 200
DN100-4” 305 158 245
DN125-5” 353 185 300
DN150-6” 406 214 360
DN200-8” 520 266(min) Available on
DN250-10” 635 320(min) Request

Test & Inspection Data

  • Hydraulic Test : Body (Shell) – 15 Kg/Cm, Seat – 11 Kg/Cm
  • Pneumatic Test : Seat – 6 Kg/Cm (Class VI Sealing)
  • Spark Test : 15 K.V. D.C

Optional Design & Components

  • EPDM DIAPHRAGM BACKUP
  • METALLIC HANDWHEEL
  • SPINDLE – SS 304/316/410
  • PNEUMATIC ACTUATOR
  • STRAIGHT THROUGH (KB TYPE) DESIGN

Technical Information subject to change without notice.