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3.
SPECIFICATIONS
MATERIALS OF CONSTRUCTION:
ALUMINUM MODELS: Aluminum housings and valve blocks, Viton O-Rings, PFA
closing pins.
STAINLESS/PTFE MODELS: 316 stainless steel valve blocks, PTFE-lined Aluminum
Housing blocks, Viton O-Rings, and PFA closing pins.
MAXIMUM FLOW RATES: 1000 sL/min (air), 28 L/min (water).
CONNECTIONS: 3/8", 1/2", compression and 3/4" FNPT.
ELECTRICAL CONNECTIONS: 9-pin "D" connector, located at the side of the valve.
POWER INPUT: +12VDC @ 800 mA. Power input is protected by a 1600mA resettable fuse.
DIRECTIONAL CONTROL SIGNAL: TTL compatible logic level signal (10K input
impedance). (Logic High >= 10 Vdc, Low <= 1.5 Vdc).
SPEED CONTROL SIGNAL: Analog 0 to 5 Vdc (100K input impedance).
TTL ON/OFF OVERRIDE: TTL low level to pins 7 and 3 (10K input impendence).
RESPONSE TIME: 100ms time constant.
DIFFERENTIAL PRESSURES: 700 to 1000 mbars (10 to 15 psid).
MAXIMUM OPERATING PRESSURE: 500 psig (35 bars).
MAXIMUM DIFFERENTIAL PRESSURE: 40 psig (2.7 bars).
ENVIRONMENTAL (PER IEC 664): Installation Level II; Pollution Degree II
F
F
F
F
GAS AND AMBIENT TEMPERATURE: 32
F to 122
F (0
C to 50
C).
LEAK INTEGRITY: 1 x 10
-7
sccs He max to the outside environment.
WETTED MATERIALS:
SMV20/SMV30/SMV40: Anodized aluminum, brass, and 316 stainless steel with
VITON7 O-rings seals; BUNA-N7, NEOPRENE7 or KALREZ7 O-rings are optional.
SMV20-S/SMV30-S/SMV40-S: 316 stainless steel with VITON7 O-rings seals;
BUNA-N7, NEOPRENE7 or KALREZ7 O-rings are optional.
4
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