Series 3581 vloeistof diafragmaprocesventiel

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Technical Data

Function: 2-way, 2-position, diaphragm process valve, solenoid operated, normally closed.
Port sizes/flow factor:
- 1/4″ NPT / 1.55 Cv
- 3/8″ NPT / 1.95 Cv
- 1/2″ NPT / 2.45 Cv
Orifice size: 12.7 mm.
Pressure range: 0.5–12.4 bar.
Temperature range:
- Fluid: up to +60°C
- Environment: +10°C to +50°C
Response time: 20–80 ms.
Media: Air, water (consult factory for compatibility).
Environmental protection: IP65 (IEC 144), NEMA 4.
Wetted materials:
- Elastomers: EPDM, FKM, NBR.
- Orifice basket: Acetal POM.
- Operator: Stainless steel (300 and 400 series) or brass.
- Shading ring: Copper (AC only).
- Springs: Stainless steel (300 series).
- Valve body: Brass.
Mounting: Use #8 × 12.7 mm long self-tapping screws (2, not provided).
Coil data:
- Duty cycle: Continuous.
- Encapsulation: Glass-filled nylon.
- Insulation: Class F.
- Power rating: 6.5 Watt (VDC), 8.5 VA (VAC).
- Voltage: 6, 12, 24 VDC; 24, 120, 220, 240 VAC (50/60 Hz).
- Voltage tolerance: ±10%.
- Winding: Class H.
Connections:
- Spades: AMP 6.3 × 0.8 mm, width 11 mm.
- Flying leads: PVC, 18 AWG or 22 AWG, multi-strand copper wire, 300V, minimum length 30 cm.
Weight: 500 grams.

Series 3581 liquid diaphragm process valve

The Spartan Scientific Series 3581 diaphragm process valve is a 2-way, 2-position solenoid/air-operated valve designed to control liquids, water, and inert gases. It includes a large 12.7 mm orifice and comes in 1/4″, 3/8″, and 1/2″ NPT port sizes.

A brass body delivers durability and supports a high pressure differential. The energy-saving solenoid pilot uses low wattage and features stainless steel internal components. Standard seal options include EPDM, FKM, and NBR.

The coils are fully encapsulated and available in all standard voltages, with spade terminals, flying leads, or a connector. Common uses include inert fluid and gas control, condensate drain systems, hot water plumbing, and sprinkler systems.