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 20SM Valve Series size 1/4" and 3/8".