TS12-26 Proportional Electric Relief w/Internally
USASI/ISO:
SYMBOLS
2.854.1
PERFORMANCE
FLOW (gpm)
FLOW (lpm)
PRESSURE (bar)
PRESSURE (psi)
Pressure Drop vs. Flow Characteristic
For Flow ➀ to ➁ with Coil De-energized
01020304050
0
00
50
100
150
200
250
2
4
6
8
10
12
14
16
18
20
40 80 120 160 200
Cartridge & Body:
A
B
C
Body Only
Relief Pressure vs.
Current (DC) Characteristic
200 Hz PWM
Relieving Pressure ➀ to ➁
PRESSURE (psi)
0
500
1000
1500
2000
2500
3000
3500
PRESSURE (bar)
0
50
100
150
200
250
% of Maximum Control Current
02010 30 50 70 9040 60 80 100
A
B
C
Typical Relief Pressure
vs. Flow Characteristic
Typical Relieving Pressure ➀ to ➁
at Various %’s of Maximum Control Current
Pressure Range “A” (207 bar/3000 psi); Cartridge in Body
FLOW (gpm)
01020304050
% of MAXIMUM RELIEF PRESSURE
50
0
25
75
100
125
% of MAXIMUM RELIEF PRESSURE
50
0
25
75
100
125
FLOW (lpm)
0 40 80 120 160 200
50% Max. Control Current
75% Max. Control Current
100% Max. Control Current
No Control Current
DESCRIPTION
A screw-in, cartridge-style, pilot-operated, spool-type hydraulic relief valve, which can
be infi nitely 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.
OPERATION
The TS12-26 blocks fl ow from ➀ to ➁ until suffi cient pressure is present at ➀ to open
the pilot section by offsetting the electrically induced solenoid force. With no current
applied to the solenoid, the valve will relieve at approximately 100 psi.
The optional manual override allows the valve to be set when the electric supply is
lost. The manual setting is added to the electric setting. To prevent the system from
being over pressurized, the manual override should always be disengaged prior to
applying power to the coil.
FEATURES
• Manual Override option. • Industry common cavity.
• 12 and 24 volt coils standard. • Optional waterproof E-Coils rated up to IP69K.
RATINGS
Maximum Operating Pressure: 241 bar (3500 psi)
Maximum Control Current: 1.10 amps for 12 VDC coil; 0.55 amps for 24 VDC coil
Relief Pressure Range from Zero to Maximum Control Current:
A: 6.9–207 bar (100–3000 psi)
B: 6.9–138 bar (100–2000 psi)
C: 2.1–69 bar (30–1000 psi)
Rated Flow: 189 lpm (50 gpm); See Performance Charts
Maximum Pilot Flow: A: 1.9 lpm (.5 gpm); B: 1.3 lpm (.35 gpm); C: .9 lpm (.25 gpm)
Hysteresis: Less than 3%
Flow Path: Free Flow:
➀ to ➁ coil de-energized; Relieving: ➀ to ➁ coil energized
Temperature: -40 to 100°C (-40 to 212°F) with standard Buna N 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 Recommendation: 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.
Cavity: VC12-2; See page 9.112.1; Cavity Tool: CT12-2XX; See page 8.600.1
Seal Kit: SK12-2X-B; See page 8.650.1
Coil Nut: Part No. 4540560;
For E-coils manufactured prior to 1-1-04, see page 3.400.1 for coil nut info.
ELECTRO-PROPORTIONAL VALVES—PRESSURE CONTROLS
Patent
Pending
HYDRAFORCE
.com
®
Recommended Electronic Controllers:
Model EFDR2 Multi-Input Fan Drive Controller.
For more information go to:
http://www.hydraforce.com/Electro/fandrive.htm
or
Recommended Electronic Controllers
catalog page 2.001.1 (Table 2)
Blue rectangles are links to other catalog pages.