6816M / 6819M


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

For On-Off Application (Rust Free Design).




15mm (½”) to 50mm (2”)

Body & Bonnet Material

Investment casted ASTM-A, 351CF8 (St.St. 304) CF8M (St.St. 316).

Pressure Temp. rating

As per ANSI Class 300

End Connection

Standard BSP(F) Optional-NPT(F)


Soft seated Teflon backed by EPDM. Optional-VITON /EPDM, Buna Nitrile.

Leakage Class

As per ANSI FCI 70-2, Teflon seating class IV. For other soft seating class VI Drop Tight/Bubble Tight.


S.S. AISI 304/316.

Stem Packing

Self adjusting, Spring loaded PTFE packing


On-Off, normally closed / normally open

Working Fluid Press

Refer to table below

Working Temperature

On 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 Packing

Buna Nitrile

Actuator Spring

IS 4454 Grade III, duly painted

Act. Working Signal Pressure

3.5 to 6 bar (refer to graph)

Operating Cycles per hour

15mm, 20mm, 25mm upto 600 cy/hr.,(tested on air, on other fluids this figure may vary).

Life Expectancy

Over one million cycles (lab tested in ideal condition)

Air Quality

Lubricated /Non-lubricated.


Air lock, position indicating limit switch box, solenoid valve, filter regulator gauge. Other accessories available on application


For 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 Pressure

Generally all models are suitable for back pressure upto 2.5 bar. However for specific application where higher back pressure is expected, refer to ‘AVCON’.

Technical Data