DESIGN |
Confirm to BS – 5156 |
BODY TYPE |
Weir (Rubber Lined – Series MVS 521)
(Unlined – Series MVS 541)
(PFA Lined – Series MVS 551) |
VALVE SIZE |
15mm to 300mm (1/ 2″ to 12″) |
END CONNECTION |
ANSI B 16.1Class 150 |
BODY MATERIAL |
Cast Iron (IS 210 grade FG 200)
Cast Steel, Other alloys on request. |
LINING MATERIAL |
Ebonite, PVDF, PFA, PP, EPDM, Glass etc. |
LINING HARDNESS |
Ebonite-95° ± 5 Shore A
Natural/Neo Rubber-55° ± 5 Shore A
PTFE-Rockwell/Shore R100 D78 or
D62 Glass lining & FRP-Parcol Parcel 40
Respectively. |
LINING THICKNESS |
15 to 65 mm Valve – 3.0 mm
80 to 100 mm Valve – 3.5 mm
125 to 150 mm Valve – 4.0 mm
200 to 300 mm Valve – 5.0 mm
PTFE Coating Thickness – 800 micron,
Glass Lining – 1.5mm. |
BODY DIAPHRAGM |
Neoprene, PTFE Backed with Neoprene
Butyl, Viton, Hyplon, Nitrile, EPDM. |
LEAKAGE RATE |
As per ANSI B 16.104 Class VI (100% Leak tight.) |
TEMPERATURE |
– 30°C to 80°C |
FLOW CHARACTERISTICS |
May be adjusted throughout a spring range
by turning the adjusting screw. |
TESTING STANDARD |
BS 6755 Part – I |
ACTUATOR TYPE |
Diaphragm or Motorized or Cylinder |
ACTUATOR ACTION |
Direct Acting – Normally Open (Air to Close)
Reverse Acting – Normally Close (Air to Open) |
SPRING RANGE |
3 – 15 PSIG (0.2 – 1.0 Kg/cm2)
8 – 20 PSIG (0.4 – 2.0 Kg/cm2)
18 – 30 PSIG (1.2 – 2.0 Kg/cm2) |
AIR SUPPLY |
20-50 PSIG (1.4-3.5 Kg/cm2) |
AIR CONNECTION |
1/ 4″ or 1/ 2″ NPT |
ACCESSORIES OPTIONAL |
Top or Side Mounted Handwheel, Limit Switches
Airset, Valve Positioner etc. |