Electro-Proportional Valves — Directional Control

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

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

OPERATION
When de-energized, the SP16-21 allows flow from 2 to 1. When the valve is partially
energized, the valve begins to throttle the flow from 2 to 1. When fully energized, the
poppet closes on the seat, blocking flow from 2 to 1. Flow from 1 to 2 will occur when
hydraulic pressure exceeds the solenoid force.
Note: If low voltage is expected on the machine, 12 or 24 volt systems will require the
use of 10 volt or 20 volt coils respectively.
See “SP Valves and Coil Operating Parameters,” page 2.002.1_pdf.

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

RATINGS
Operating Pressure: 250 bar (3625 psi)
Flow: Up to 265 lpm (70 gpm)
Dither/Pulse Frequency: 100 Hz to 400 Hz
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
Threshold Current: 0.3 amps; see performance charts
Internal Leakage: 7 drops/minute max. at 207 bar (3000 psi)
Temperature: -40° to 100°°C (-40° to 212°F) with Buna seals;
   -26° to 204°C (-15° to 400°F) with fluorocarbon seals;
   -54° to 104°C (-65° to 225°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. 7004400

RECOMMENDED ELECTRONIC CONTROLLERS
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



 

 

PERFORMANCE:

SP16-21 Performance chart

 

DIMENSIONS:

SV16-21 Valve Dimensions

 

MATERIALS:

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.

 

ORDERING CHART:

SP16-21 Ordering Chart Manual Override options