We offer seat less and glandless Piston Control Valve that is considered to be the best for
controlling of stream and thermic fluid line. Piston Check Valve has also found its application in
numerous liquid and gas control operations. Manufactured from optimum quality materials, these
piston valves are in great demand. Pistol valves can be availed in different metal construction that
can suit various conditions. We offer piston valves in ND/16 and ND/25 rating and 15mm to
150mm range. We supply the flange of piston valve as per various BS, DIN, ASA, IS dimensions.
We have carved strong position in the market as one of the leading Piston Valves Manufacturers
and Suppliers.
General Features & Highlights of Piston Valve
Seat less & Glandless valvesPiston Valves are maintenance freeSealing rings easily replaced
onlineAdapts as regulating valve
The Bubble tight seal is formed by
The cylindrical piston precision-ground stainless steeelThe resillient sealing rings-made from
specially, imported materialThe load on the bonnet nuts compressesThe load on the bonnet nuts
compresses
The Bubble Tight Seal is Formed By
The Cylindrical Piston Precision-Ground Stainless Steel.The Resillient Sealing Rings-Made from
Specially Imported MaterialThe Load On The Bonnet Nuts CompressesThe Resilient Sealing
Rings Firmly Round The Piston To Give a Pressure-Tight Seal
ENDS FLANGED & DRILLED TO DIN. BS-10, ANSI, ETC OR SOCKETWELD / SCREWED
TO B.S.P, B.S.P.T, N.P.T,
BRIEF DETAILS OF PISTON VALVE
It is a Seat less & Glandless valveThe valve up to the size 6” does not have any stuffing box. The
salient feature of this valve is that of the piston operation.The piston slides between the two
packing rings made of asbestos PTFE and does not rotate; hence there is minimum ware.The only
warring part is the packing ring and that to after an extensive use. A ported lantern bush separates
the two packing rings.
The bottom ring rests on a cast machined groove of the body and upper packing ring is being held
and remained pressed by a bonnet on top.The bonnet rests on the top ring, when tightened evenly
by the nut of the stud presses the lantern bush, which in turn presses the bottom ring. This is done
by keeping the valve in closed position.Thus the mechanism is aligned compressed and ready for
operation. Here the bottom ring of the valve serves the purpose of the seat while the upper ring
serves the purpose of a gland.The advantage of the valve is when any leakage is observed from the
hole of the bonnet, specially provided for this purpose; it can be stopped on the line. This is done
by tightening the nut of the bonnet evenly, keeping the valve in closed position.The maximum
thickness of the ring is utilized and when the valve cannot be further tightened to stop the leakage,
It is only required to replace the packing rings. This can be done on the line itself. The pressure
drop in this valve is considered as high as 18%.
APPLICATION
The valve finds it’s best application in control of steam & thermic fluid line. The valve also has
numerous applications in the control of liquids and gases also.
RANGE
The valves can be supplied in various metal constructions to suit the condition. The valves are
available in ND/16 and ND/25 rating. The flange of piston valve can be supplied in accordance to
BS, DIN, ASA, IS dimensions. The range for the valve is from 15 mm to 150mm
ACTUATION
The valves can be supplied with electrical and pneumatic actuation.