PNEUMATIC DIAPHRAGM CONTROL VALVES:

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PNEUMATIC DIAPHRAGM CONTROL VALVES:
ACTUATORS:    Direct acting, spring return type diaphragm  actuator, air to open or air to close type.
CHAMBER MATERIAL:    Cast Iron.
DIAPHRAGM:    Fabric reinforced Neoprene rubber for strength  and flexibility producing long cycling lifetime.
 Performed shape for added flexibility and linear  response.
AIR PRESSURE TO DIAPHRAGM:    15 TO 30 PSIG
MOTORISED CONTROL VALVES  
ACTUATORS:  
 The valves having motorized actuators. 230 v  a.c.. Three way mixing or diverting.
SPECIAL FEATURES
SIZES AVAILABLE     ½ “to 6”
  END CONNECTIONS     Flanged End, Screwed end connections confirming to  DIN, ISO, BS,   ANSI standards with raised face , flatface to tongue & Groove etc.
TRIM MATERIAL     Unless specified otherwise, Valve P LUG & Seat Rings are of   Stainless Steel Soft Seating material like Teflon etc. are supplied   against specific requirements.Both the seat ring and plug are   replacable separately.
VALVE PLUG CHARACTERISTICS     to meet various flow control characteristics, following types of plug   designs are available:
 
01.   Quick open plug, Skirt guided for quick opening & closing valve.   Ideal for on- off type of controlling action.
02.   V Port hollow skirt plug, skirt plug, skirt guided. This type of plug   is having linear characteristics and is recommended for   modulating type control.
03.   Vport hollow skirt plug, top & bottom guided.
04.   Counter plug, top & bottom guided having linear or equal   percentage characteristics.
PACKING     Asbestos, Teflon of Graphited Asbestos Gland Packing
BONNET  
01.   Plain bolted bonnet upto 200 c
02.   Extended radiating finned bonnet upto 600c
LEAKAGE FACTORS  
01.   0.01% OF C.V for single seated valve
02.   0.15% of C.V for double contact.
03.   Bubble tight shut- off single seated having soft seat rigs.

INSTALLATION:

Install the valve with daiphragm actutators in either vertical or inverted position. Horizontal mounting is not recommended.

MATERIAL OF CONSTRUCTION:

C.I. / C.S. / S.S.-304 / S.S. 316 / BRONZE / G.M. or as required.
APPLICATIONS: for control of gas , oil, air, water- steam etc in textile, paper, pulp, chemicals & petro – chemical industries.

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