Solenoid-Operated On/Off Valve

SF20-23 — Poppet-Type, 2-Way, Normally Open
High Pressure, with Reverse Flow Energized
  Selection guide - similar valves.
  PDF file of this page.
  STP file for SF20-23.
  Request a quote.

SF20-23 Valve

SYMBOL:
SF20-23 Valve symbol

DESCRIPTION
A solenoid-operated, 2-way, normally open, poppet-type, screw-in hydraulic
cartridge valve designed for low leakage in load-holding or blocking applications.

OPERATION
When de-energized, the SF20-23 allows flow from 2 to 1 and from 1 to 2. When
energized, the valve closes, blocking flow from 2 to 1. In this mode, flow from 1 to 2
will be allowed after overcoming the solenoid force. This requires 3.4 to 10.3 bar (50 to 150 psi).

FEATURES
• Continuous-duty rated coil.
• Hardened seat for long life and low leakage.
• Optional coil voltages and terminations.
• Cartridges are voltage interchangeable.
• Unitized, molded coil design.
• Optional waterproof E-Coils rated up to IP69K.
• Corrosion-resistant plating.
• Industry common cavity.

RATINGS
Operating Pressure: Max: 345 bar (5000 psi); Minimum: 1.4 bar (20 psi).
Pressure rating established per NFPA/T2.6.1 R2-2000 using 90% assurance
and 90% verification levels for 1 million cycles.
Flow: Up to 303 lpm (80 gpm)
Internal Leakage: 0.5 cc/minute (10 drops/minute) max. at 345 bar (5000 psi)
Temperature: -40 to 100 °C (-40° to 212 °F) with Buna seals;
-54 to 104 °C (-65 to 225 °F) with Polyurethane seals;
-26 to 204 °C (-15 to 400 °F) with Fluorocarbon seals
Coil Duty Rating: Continuous from 85% to 115% of nominal voltage
Initial Coil Current Draw at 20 °C: Standard Coil: 1.2 amps at 12 Vdc;
0.13 amps at 115 Vac (full wave rectified).
E-Coil: 1.4 amps at 12 Vdc; 0.7 amps at 24 Vdc
Minimum Pull-in Voltage: 85% of nominal at 207 bar (3000 psi)
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC20-2; See page 9.120.1_2w
Cavity Tool: CT20-2xx; See page 8.600.1
Seal Kit: SK20-2x-T; See page 8.650.1
Coil Nut: Part No. 7004410

PERFORMANCE:

SF20-23 Valve Performance Graph

  DIMENSIONS:

SF20-23 Valve Dimensions

MATERIALS:

Cartridge: Weight: 0.61 kg (1.35 lb); Steel with hardened work surfaces. Corrosion-resistant zinc-nickel plated exposed surfaces; Buna N O‑rings and polyester elastomer back-up standard.

Standard Ported Body: Weight: 4.51 kg (9.94 lb); Ductile iron standard, rated to 345 bar (5000 psi); Aluminum bodies available; dimensions may differ.
See page 8.020.1_2w.

Standard D-Coil: Weight each: 0.11 kg (0.25 lb); Unitized thermoplastic encapsulated, Class H high temperature magnet wire.
See page 3.200.1_08-size.

E-Coil: Weight: 0.14 kg (0.3 lb); Perfect wound, fully encapsulated with rugged external metal shell; Rated up to IP69K with integral connectors. See page 3.400.1_08-size.

 

ORDERING CHART:

SF20-23 Ordering Chart

 


Selection guide - similar valves.
PDF file of this page. STP file for SF20-23. Request a quote.