Electro-Proportional Valves — Pressure Control

TS12-36 — Proportional Pressure Control, Pilot-Operated Relief
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TS12-36 Valve
U.S. Patent 7,137,406

TS10-36 Valve symbol
A screw-in, cartridge-style, pilot-operated, spool-type hydraulic reducing/relieving valve,
which can be infinitely adjusted across a prescribed range using a variable electric input.
Pressure output is proportional to DC current input. This valve is intended for use as a
pressure limiting device in demanding applications.

The TS12-36 allows flow from 2 to 1 until pressure at 1 equals the setting determined by the
coil current. Port 3 is typically connected to the reservoir. If external load increases the pressure
at 1 beyond this setting, pressure is relieved by allowing flow from 1 to 3. Minimum pressure at 1
without any current is 6.9 bar (100 psi).
If external circuitry allows the pressure at 2 to fall below the pressure at 1, the valve will allow free
flow from 1 to 2 regardless of the setting of the valve or the amount of current in the coil.

• 12 and 24 volt coils standard.
• Standard waterproof coils or optional waterproof E-Coils.

Max. Operating Pressure: Ports 1 and 2: 276 bar (4000 psi)
Max. Control Current: 1.04 amps for 12 VDC coil; 0.53 amps for 24 VDC coil
Max. Tank Pressure: Port 3: 68.9 bar (1000 psi); tank pressure is additive to regulated pressure
Electrical Parameters:
COIL Typical Max. Current
(A) at 0 gpm
Typical Resistance ±5%
at 20°C (ohms)
Typical Apparent
Inductance (mH)
12 VDC 24 VDC 12 VDC 24 VDC 12 VDC 24 VDC
D-Coil 1.04 0.53 7.25 ±5% 28.35 ±5% 167 mH 624 mH
0.96 0.50
E-Coil 1.29 0.70 6.86 ±5% 24.18 ±5% 159 mH 550 mH
1.22 0.66
Reduced Pressure Range: from zero to max. control current:
   Range A: 6.9 to 207 bar (100 to 3000 psi); Range B: 6.9 to 172 bar (100 to 2500 psi);
   Range C: 6.9 to 138 bar (100 to 2000 psi)
Max. Pilot Flow and Leakage: 0.42 lpm (0.11 gpm) with max. control current and with inlet pressure
   at 241 bar (3500 psi) at regulated flow of 3.8 lpm (1 gpm).
Flow Path: Free Flow: 1 to 3 coil de-energized; Reduced: 2 to 1 coil energized;
   Relieving: 1 to 3 coil energized
Performance Life: less than 5% change in the slope of the pressure vs current characteristics
   over one million cycles
Hysteresis: Does not exceed 5% of maximum pressure setting
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 107°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: When possible, the valve should be mounted below the reservoir oil level.
   This will maintain oil in the armature preventing trapped air instability.
   If this is not feasible, mount the valve horizontally for best results; See page 9.020.1
Cavity: VC12-3; See page 9.112.1_3w
Cavity Tool: CT12-3xx; See page 8.600.1
Seal Kit: SK10-3x-BM; See page 8.650.1
Coil Nut: Part No. 4526330

See model EFDR2 Multi-Input Fan Drive Controller, or EVDR-Type Controller Selection Guide,
or for other Electronic Controllers, see page 2.001.1_pdf




TS12-36 Valve Performance Chart


TS12-36 Valve Performance Chart


TS12-36 Valve Performance Chart



TS12-36 Valve Dimensions



Cartridge: Weight: 0.30 kg (0.66 lb);
Steel with hardened work surfaces.
Zinc-plated exposed surfaces; Buna N
O-rings and polyester elastomer back-ups
standard. Polyurethane seals with
Fluorocarbon backup recommended for
operating pressures over 240 bar (3500 psi).

Standard Ported Body: Weight: 0.23 kg
(0.50 lb); Anodized high-strength 6061 T6
aluminum alloy, rated to 207 bar (3000 psi);
Ductile iron bodies available; dimensions may
differ. See page 8.012.1_3w.

Standard D-Coil: Weight each: 0.32 kg
(0.7 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.



TS12-36 Ordering Chart