STC 2D150-1/2-4-D 1/2" NPT Pilot Diaphragm Brass Solenoid, 220VAC DIN

STC 2D150-1/2-4-D 1/2" NPT Pilot Diaphragm Brass Solenoid, 220VAC DIN
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  • Brand:STC
  • Part #:2D150-1/2-4-D
Condition: new
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Overview

1/2" NPT SLOW CLOSING Anti-Water Hammering Normally Closed, PILOT Diaphragm Brass Solenoid Valve, 220VAC, CE, H CLASS, Din Coil, 15M

To open: when the valve receives an electrical signal, a magnetic field is formed which attracts the plunger covering the pilot orifice to lift off, causing system pressure (holding the diaphragm/piston closed) to drop. As system pressure on the top of the diaphragm/piston is reduced, full system pressure on the other side of the diaphragm/piston acts to lift the diaphragm/piston away from the main orifice, which allows media flow through the valve. Since the bleed orifice is dimensionally smaller than the pilot orifice, the system pressure can t rebuild on the top of the diaphragm/piston as long as the pilot orifice remains open.

To close: when the valve is de-energized, it releases its hold on the plunger. Then the plunger drops and covers the main orifice. The system pressure builds up on the top of the diaphragm/piston through the bleed orifice, forcing the diaphragm/piston down until it covers the main orifice and stops media flow through the valve.

Features:

  • 2-Way, Slow Closing Pilot Diaphragm
  • Normally Closed
  • Option: Normally Open
  • Body: Brass
  • Seal: NBR
  • Operating Temperature: NBR Seal: 14 to 176°F
  • Ambient Temperature: 23 to 110°F
  • Operating Pressure: AC: 4 to 175PSI
  • Coil Power: 12 to 20W
  • Coil: Class H, IP65
  • Air, Liquid, Oil, Water
  • Cv = 3.7. Orifice = 15mm

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