5812M-NC / 5822M-NO


2/2-Way Pneumatic Piston Operated Valve with Engineering Plastic-Piston Actuator.

For On-Off Application, 5812M For Flow Above Seat (Normally Closed), 5822M For Flow Above Seat(Normally Open).


15 mm (1/2”) to 150 mm (6”).


Cast Iron : IS 210 Gr. FG 200 SG Iron- ASTM A536, Gr.60-40-18 (DIN 0.7043)(GGG40.3). Cast Steel: ASTM A 216 Gr. WCB St.St.: ASTM A 351CF8(SS304),or ASTM A351CF8M(SS316).

Pressure Temp. rating

As per ANSI B 16.5 Class 150.

End Connection

Flanged as per ANSI B 16.5 Class 150.


St. St. AISI 304/316 Ground and Burnished.

Stem Packing

Self adjusting, Spring loaded Teflon packing

Plug and Seat

St. St.: AISI 420/304/316


Soft seated PTFE. Optional-Viton/EPDM, Buna Nitrile.


Soft Seated Class VI , as per ANSI B 16.104-1976.


On-Off, normally close/open.

Working Fluid Press

Refer to table below

Working Temperature

On steam-continuous 155°C, Intermittent 180°C, EPDM 135°C, VITON 180°C.

Cylinder, Cover, Body & Piston:

Glass filled polyamide.

Actuator Working Pressure

3.5 to 6 bar (refer to graph)

Piston Packing

Buna Nitrile.

Actuator Spring

IS 4454 Grade III, duly painted

Operating cycles

Upto 50 mm 300 cy/hr.,(tested on air,on other fluids this figure may vary). For other size details, refer to AVCON.

Life Expectancy

Over one million cycles (lab tested in ideal condition)

Air Quality

Lubricated filtered and free of moisture. Shop air or dry instrument quality air.

Max. Operating

Refer to graph


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, petrochemical industries, PSA nitrogen system, air dryer, gas generator and others.

Back Pressure

Suitable upto 2.5 bar.

Instruction Manual:

Refer to IM 5812M/5822M

Technical Data