Pressures to 150000 psi (10342 bar)
Piston type air-operated valves offer a unique, reliable design providing for a long and dependable life. These valves are more compact than diaphragm valves and are appropriate for applications such as high-flow gas and liquid delivery systems to reactors and mixer/vaporizers.

Autoclave Engineer’s piston type actuators feature:

• Small, compact, piston actuator.
• Air-to-open or -close with spring return.
• Yoke design for separation of process and air pressure. †
• Ease of stem replacement.
• Stem position indicator is standard. †
• Positive shut-off metal-to-metal seating.
• High actuator cycle life.

Air Operator Materials
Cylinder, piston, cover plates, spring housing

• Anodized aluminum (for corrosion and wear resistance).

Yoke

• Painted Steel

Technical Data
Air Operator

• Maximum allowable working pressure: 100 psi (6.89 bar)


• Allowable piston temperature range: -20°F to 200°F (-29°C to 93°C)


• Area of piston:

Light duty - 4.9 sq. in (31.6 sq. cm)
Heavy-Light duty - 5.4 sq. in (34.8 sq. cm)
Medium duty - 19.6 sq. in (126.5 sq. cm)
Heavy duty - 39.2 sq. in (252.9 sq. cm)
Extra Heavy duty single stage - 56 sq. in (361.3 sq. cm)
Extra Heavy duty double stage - 112 sq. in (722.6 sq. cm)

• Approximate air usage/cycle @ 100 psi (6.89 bar):

Light duty - .003 SCF (.00008 SCM)
Heavy-Light duty - .007 SCF (.0002 SCM)
Medium duty - .04 SCF (.0011 SCM)
Heavy duty - .08 SCF (.0022 SCM)
Extra Heavy duty single stage - .33 SCF (.0095 SCM)
Extra Heavy duty double stage - .67 SCF (.019 SCM)

• Tested to 100000 cycles at 100 psi (6.89 bar) with no leakage or signs of wear or fatigue.

† The standard Heavy-Light operator does not utilize the yoke design. A yoke design is available upon request. Note: Isn't available for SW Valve Series size 1/4".