6816M / 6819M

6816M / 6819M

3/2-Way Pneumatic Piston Operated Valve for Mixing or Diverting Application with Linear Pneumatic Actuator

Product Specifications

Size15mm (½”) to 50mm (2”)
Body & Bonnet MaterialInvestment casted ASTM-A, 351CF8 (St.St. 304) CF8M (St.St. 316).
Pressure Temp. ratingAs per ANSI Class 300
End ConnectionStandard BSP(F) Optional-NPT(F)
SeatingSoft seated Teflon backed by EPDM. Optional-VITON /EPDM, Buna Nitrile.
Leakage ClassAs per ANSI FCI 70-2, Teflon seating class IV. For other soft seating class VI Drop Tight/Bubble Tight.
TrimS.S. AISI 304/316.
Stem PackingSelf adjusting, Spring loaded PTFE packing
CharacteristicOn-Off, normally closed / normally open
Working Fluid PressRefer to table below
Working TemperatureOn steam- continuous :155°C, Intermittent 180°C, with PTFE seating, Buna Nitrile 80°C, EPDM 135°C, VITON 180°C
Cylinder, Cover, Body & Piston:Glass filled polyamide., S.S. investment casted
Piston PackingBuna Nitrile
Actuator SpringIS 4454 Grade III, duly painted
Act. Working Signal Pressure3.5 to 6 bar (refer to graph)
Operating Cycles per hour15mm, 20mm, 25mm upto 600 cy/hr.,(tested on air, on other fluids this figure may vary).
Life ExpectancyOver one million cycles (lab tested in ideal condition)
Air QualityLubricated /Non-lubricated.
AccessoryAir lock, position indicating limit switch box, solenoid valve, filter regulator gauge. Other accessories available on application
ApplicationFor control of air, water, oil, gas, steam in textile, power generation, paper & pulp, chemical, petro chemical industries, PSA nitrogen system, air dryer, gas generator and in process plants.
Back PressureGenerally all models are suitable for back pressure upto 2.5 bar. However for specific application where higher back pressure is expected, refer to ‘AVCON’.

Material Diagram