Our range of diaphragm valves provide excellent sealing and isolation characteristics to contain fluid being controlled and prevent migration of the controlled fluid into the valve mechanisms or out of the valve. Diaphragm valves utilize a resilient diaphragm and a valve shoulder to engage a valve seat and prevent the flow of fluid past the valve seat.
Diaphragm valve are weir type and it is suitable to deliver the full potential of simple yet versatile and effective concept.
Size: - 25 mm to 150 mm
Body: -Graded C.I or Ductile Iron ASTM A 351, Gr.CF8 (S.S-304 or 316) Lined By FEP/PFA
Bonnet: – ASTM A 216 Gr. WCB (Cast Carbon Steel)
Diaphragm (Pin Type): PTFE Backed by Neoprene Rubber
Lining Material:- FEP/PFA Lining Thickness- 3 to 5 mm THK.
Design- Two Piece As per BS- 5156
Temp. Resistant- FEP- -20 to 180*
PFA- -20 to 230*
Testing: - Hydro Test -11 kg /cm2 to Full Vacuum as per BS/API Pneumatic Test- 6 kg/cm2
Spark Test-15 KVA DC
F to F: - As per Class 150
Flange Drilling: - As per ANSI B 16.5
Operation:-Usually Manual Lever operated Gear and Pneumatic Actuation also provided on Request.
Diaphragm valves (or membrane valves) consists of a valve body with two or more ports, a diaphragm, and a "saddle" or seat upon which the diaphragm closes the valve. The valve is constructed from either plastic or steel.
Originally, the diaphragm valve was developed for use in non-hygienic applications. Later on the design was adapted for use in the bio-pharmaceutical industry by using compliant materials that can withstand sanitizing and sterilizing methods.
