PRESSURE CONTROLS
PS50-36 Pilot-Operated Sequence, Internal Pilot,
DESCRIPTION
A screw-in, cartridge-style, direct-acting, spool-type, hydraulic sequence valve with
internal pilot and spring chamber drain.
OPERATION
In its steady state, the PS50-36 blocks fl ow from ➀ to ➁, with the spring chamber
drained at
➂.
On attainment of a predetermined pressure at
➀, the cartridge shifts to open ➀ to ➁.
Note that back-pressure on
➂ adds to the spring setting value.
FEATURES
• Adjustments cannot be backed out of the valve.
• Adjustments prohibit springs from going solid.
• Spring range to 331 bar (4800 psi).
• Hardened spool and cage for long life.
• Industry common cavity.
RATINGS
Operating Pressure: 331 bar (4800 psi) on ports ➀ and ➁;
240 bar (3500 psi) on port
➂
Sequence Pressure Max.: 331 bar (4800 psi)
Flow: See Performance Chart
Internal Leakage: 82 cc/minute (5 cu. in./minute) max. to 85% of nominal setting
Pilot Orifi ce: Pilot-operated through 0.51 mm (0.20 inch) hole
Crack Pressure Defi ned: bar (psi) evident at 0.95 lpm (0.25 gpm) attained
➀ to ➁
Standard Spring Range: 27.6 to 331 bar (400 to 4800 psi)
Temperature: -40 to 120°C with standard Buna 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: VC10-3; See page 9.110.1
Cavity Tool: CT10-3XX; See page 8.600.1
Seal Kit: SK10-3P-BM; See page 8.650.1
USASI/ISO:
PERFORMANCE (Cartridge Only)
SYMBOLS
6.674.1
20.7/300
22.4/325
24.1/350
25.9/375
27.6/400
29.3/425
31.0/450
PRESSURE DROP bar/psi
Pressure vs. Flow
➀ to ➁; Minimum Setting
32 cSt/150 ssu oil at 40°C
9.5
2.5
18.9
5.0
28.4
7.5
37.9
10.0
FLOW RATE lpm/gpm
47.3
12.5
56.8
15.0
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Setting in bar
†
(Blank) for Adjustable, or
Specify, for example:
M25 25 bar
M100 100 bar
Setting in psi
†
(Blank) for Adjustable, or
Specify, for example:
9.0 900 psi
21.0 2100 psi
MATERIALS
Seals
Polyurethane P
TO ORDER
Cartridge: Weight: 0.27 kg. (0.60 lbs.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces.
Polyurethane O-rings and
polyester elastomer
back-ups
standard. Anodized aluminum
knobs and caps.
Ported Body: Weight: 0.64 kg.
(1.41 lbs.) Ductile Iron (code "D")
standard, consult factory for
weight, dimensions may differ.
Rated to 345 bar (5000 psi).
See page 8.010.1.
PS50-36__ - __ __ __ - __ - __ __ / __ __ __ __
Adjustment Option
1/4 in. Hex Allen Head A
1-1/2 in. Dia. Alum Knob B
Option A w/Cover Cap C
Factory Preset Non-Adjst F
Factory Preset
Hidden Adjustment H
Option C
w/Lockwire Holes L
DIMENSIONS
Spring Range
50 27.6 to 331 bar
(400 to 4800 psi)
Porting
Cartridge Only 0
SAE 6 (Ductile) 6TD
†
Adjustable valves will be
preset to approx. 50% of
spring max. potential.
PS50-36
6.674.2
External Drain
®
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