Product Category : Valve Accessories And Components
FM Piston Valve is supplied by Forbes Marshall which is an ISO 9001 certified company. The FM Piston Valve is zero leak isolation Piston Valve, in which the seat and gland are replaced by Lower and Upper Sealing rings along with a Piston. This overcomes the difficulties usually associated with the replacement of conventional seats. The FM Piston Valve is the name for prevention of inline leakage as well as leakage through glands, making for leak-proof isolation in the pipelines. The FM Piston Valve is a seat less and gland less Piston Valve. At the heart of the FM piston valve are Piston & sealing rings. A burnished piston seals against SS reinforced graphite rings to achieve a leak proof shutoff. This unique design ensures a long life even at high temperatures up to 427 degrees C. FM Piston Valve is operative friendly and means with little amount of effort. Maintenance can be done easily and quickly that is internals can be removed without removing the valve body from the main line.
Features of FM Piston Valve:
Larger effective sealing area
Leak proof isolation - Class 6 shut off achieved.
Durability - Piston unexposed to media
Absence of Gland and Seat
Maintenance friendly - Uniform sealing rings on both the sides and maintenance can be done without removing the Piston Valve from the pipe line. [On-line Maintenance]
User Friendly - It does not need Piston Valve Key
The Only Scrap Free Piston Valve
Self Lubricating
Self Cleaning
Ranges of FM Piston Valve:
Forged Carbon Steel [A105] with SS Internals
15 NB, 20 NB, 25 NB, 32 NB, 40 NB in socket weld ends as well as Screwed BSPT /NPT Ends
For socket weld ends
Max Operating Pressure: 78 kg/cm2
Max Operating Temperature: 427 deg. C
Cold Hydraulic test pressure: 156 kg/cm2
For Screwed Ends,
Max Operating Pressure: 31.64 kg/cm2
Max Operating Temperature: 427 deg C
Cold Hydraulic test pressure: 63 kg/cm2
Cast Carbon Steel [ASTM A 216 WCB] with SS Internals
50 NB, 65NB, 80 NB, 100 NB, 125 NB, 150 NB, 200 NB in Flanged ends with ANSI CL.300,
Body design conditions: 42 kg/cm2 at 427 deg C
Max working conditions: 39.5 kg/cm3 at 300 deg C
Cold Hydraulic test pressure: 79 kg/cm2
Piston Valve Standard: ANSI B 16.34, API 598, API 602, IBR / N IBR
Applications of FM Piston Valve: FM Piston valve can be used for on-off duties not only for steam but also for LPG, ammonia, acids, alkalies and thermic fluids.
Advantages of Fm Piston Valve: Fm Piston Valve is an energy saving isolation valve, preventing above all types of valve leakages and increasing the life of the valve. It is gland less and seat less, so it gives relief from the problems associated with seat and gland packing.
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