Electro-Proportional Valves — Directional Control

SP16-21 — Poppet-Type, 2-Way, Normally Open
  Selection guide - similar valves.
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  STP file for SP16-21.
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SP16-21 Valve

SP16-21 Valve symbol
A solenoid-operated, 2-way, normally open, poppet-type, proportional, screw-in
hydraulic cartridge valve for low-leakage blocking or load-holding applications.

When energized, the SP16-21 acts as a check valve, allowing flow from 1 to 2 while
blocking flow from 2 to 1. When de-energized, the poppet lifts to open the 2 to 1 flow path.

• Continuous-duty rated coil.
• Efficient wet-armature construction.
• Optional waterproof E-Coils rated up to IP69K.
• Industry common cavity.

Operating Pressure: 250 bar (3625 psi)
Proof Pressure: 344 bar (5000 psi)
Burst Pressure: 779 bar (11,300 psi)
Flow: 170 lpm (45 gpm) based on 34.4 bar (500 psi) pressure drop.
Dither/Pulse Frequency: 100 Hz to 400 Hz
Valve Inductance: 166 mH
Hysteresis: less than 10% up to 70% of I-max; less than 5% above 70% of I-max
Max. Control Current: 1.2 amp required to achieve rated flow for 12 VDC D-coil
Threshold Current: 0.3 amps; see performance charts
Max. Internal Leakage: 5 drops per minute at 207 bar (3000 psi), valve energized to 1.2 amps.
Temperature: -40° to 100°C (-40° to 212°F) with Buna seals;
   -35° to 204°C (-31° to 400°F) with fluorocarbon seals;
   -45° to 107°C (-56° to 224°F) with polyurethane seals
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: VC16-2; See page 9.116.1_2w
Cavity Tool: CT16-2xx; See page 8.600.1
Seal Kit: SK16-2x-T; See page 8.650.1
Coil Nut: Part No. 7004420; with manual override
   Part No. 4558740, spacer Part No. 4556700.

The EVDR Series controllers are recommended for use with most HydraForce
proportional valves. These newer electronic controllers are versatile, reliable, and
easily configured and customized for a wide range of applications.
See the EVDR Product Selection Guide.
For other Electronic Controllers, see page 2.001.1_pdf




SP16-21 Performance chart



SV16-21 Valve Dimensions



Cartridge: Weight: 0.32 kg (0.71 lb);
Steel with hardened work surfaces.
Zinc-plated exposed surfaces; Buna N
O-rings and back-ups standard.

Standard Ported Body: Weight: 0.57 kg
(1.25 lb); Anodized high-strength 6061 T6
aluminum alloy, rated to 207 bar (3000 psi);
Ductile iron bodies available; dimensions
may differ. See page 8.016.1_2w.

Standard D-Coil: Weight each: 0.27 kg
(0.60 lb); Unitized thermoplastic
encapsulated, Class H high temperature
magnetwire. See page 3.200.1_10-size.

E-Coil: Weight: 0.41 kg (0.9 lb); Perfect
wound, fully encapsulated with rugged
external metal shell; Rated up to IP69K
with integral connectors.
See page 3.400.1_10-size.



SP16-21 Ordering Chart Manual Override options