Type 5281B – Normally Open Servo-Assisted Solenoid Valve with Plunger Pilot

Ordering Chart
Port connection Orifice Cv Pressure range Item no. Voltage/Frequency [V/Hz]
[inch] [mm] [PSI] 24 V DC 120 V/60 Hz
Brass
NPT 1/2 13 4.65 2.9 - 145 464 343 464 349
NPT 3/4 20 5.81 2.9 - 145 464 344 464 350
NPT 1 25 11.62 2.9 - 145 464 345 464 351
NPT 1 1/4 32 23.25 2.9 - 145 464 346 464 352
NPT 1 1/2 40 23.25 2.9 - 145 464 347 464 353
NPT 2 50 46.51 2.9 - 145 464 348 464 354

Servo-assisted brass plunger piloted solenoid valve with un-coupled rugged diaphragm. This valve is designed for neutral gases and liquids where a rugged and reliable solution is required.
Technical Data
Pressure range 2.9-232 PSI, Max.
Temperature media +14 °F ... +176 °F
Ambient temperature 131 °F, Max.
Body material Brass
Seal material NBR
Coil material Epoxy (Class H)
Power consumption DC: 8 W, AC: 21 VA (inrush), 12 VA (hold)
Protection class IP65
Electrical connection 2509 cable plug Form A (included)
CE mark
Options
  • Normally closed (5281)
  • Cables plug with LED
  • Cable plug with varistor
  • UL Recognized version with cable plug
Envelope Dimensions [inch] (see datasheet for details)
Type 5281B Envelope Dimensions
Size A B C
1/2" 2.56 1.57 4.72
3/4" 3.94 2.36 5.02
1" 4.53 2.76 5.35
1 1/4" 4.96 3.35 5.77
1 1/2" 4.96 3.35 6.12
2" 6.46 4.53 6.98

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