Black Box AC328A-R4 Spécifications télécharger pdf (Page 11)

VALVETOP

™

PILOT VALVES

Solenoid Valves to Pilot Any Actuator

Valvetop provides a portfolio of self-contained pilot

valves to control pneumatic actuators. These compact,

high ﬂow spool valves are all low power and can deliver

signiﬁcant operating cost savings. Integral pilot valve

options include solenoid and piezo pilots, aluminum and

316 or 304 stainless steel valve bodies, and pushbutton

or palm actuated manual overrides.

SOLENOID VALVES

- 24Vdc, 120vac, 220vac

- Aluminum, 316 Stainless, 304 Stainless

- Single Coil, Dual Coil, Blocked Center

- High Flow up to 3.0Cv

- Low Power Consumption (solenoid 0.5

watts; piezo 12mw)

- Low temperature rating -50°C (-58°F)

(on request)

PILOTS

- Internally mounted for protection from

the environment

- Low Power Solenoid or Ultra-Low

Power Piezo pilots

- Single or Dual Pilots

- Fail open, Fail closed, Fail in last position

- 50 million cycle minimum life

- Class F coil insulation

(Class H available on request)

- Response time 10mS

VALVE BODIES

- Anodized Aluminum

- 316 Stainless Steel

- 304 Stainless Steel

MANUAL OVERRIDES

- Momentary

- Latching

- Manual Reset

Prevents accidental opening of

a tripped ESD valve

Local operator intervention is required

before valve can be re-opened

DUAL VALVE

- Two integral solenoid valves conﬁgured

in series or parallel

- For applications where a redundant

solenoid is required

- For ESD valves or control of 3-position

actuators

MANUAL RESET SOLENOID VALVE

- Designed for Critical Service or Emergency

Shutdown Valve applications which often

require operators to manually verify a

system prior to restarting a process

- Features a 1.2 Cv ﬂow rate and rugged 316

stainless steel housing, ideal for offshore

applications

How It Works

a) The pushbutton on the Manual Reset so-

lenoid valve is manually pushed and latched.

The inward movement of the pushbutton

causes the valve to shift.

b) The pilot is then energized, which

unlatches the manual pushbutton,

but does not change the valve state.

c) When the coil is de-energized, the valve

is returned to its original fail-safe mode.

FLAME ARRESTORS

These double as in line ﬁlters, protecting

the pilot against damage caused by dirty air.

This design also allows the users to replace

or work on the external valve in situ without

affecting the integrity of the explosion proof

enclosure.

Flow Rates

- 1.2 Cv

- 3.0 Cv

VA LV E TO P D I S C R E T E VA LV E C O N T R O L L E R S

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 23 24

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Black Box AC328A-R4 Spécifications Page 11

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