Vickers Eaton 1UL60-P-35S Hydraulic Cartridge Valve

Product Name: Vickers Eaton 1UL60-P-35S Relief / Unloading Cartridge Valve
Model Number: 1UL60-P-35S
Part Number: 407AA00033A
Brand: Vickers / Eaton
Product Series: 1UL60
Valve Type: Pilot-operated relief/unloading valve
Installation: Screw-in cartridge
Application: Hydraulic pressure unloading and pressure control

Product Details

The Vickers Eaton 1UL60-P-35S is a pilot-operated spool-type hydraulic relief/unloading cartridge valve designed for hydraulic systems requiring controlled pump unloading and pressure management.

The valve is part of the Eaton/Vickers 1UL60 Series and is supplied as a cartridge for installation into a suitable manifold, special line body, or custom Hydraulic Integrated Circuit (HIC). The manufacturer documentation specifies a maximum flow capacity of 60 L/min (16 US gpm) and a pressure rating of 350 bar (5,000 psi). (Hydraulic Supply Company)

The P designation indicates leakproof screw adjustment, while 35 identifies the 150–350 bar pressure range. S specifies nitrile seals. (Hydraulic Supply Company)

Features

• Original Vickers / Eaton 1UL60 Series design

• Pilot-operated spool construction

• Relief/unloading valve function

• Screw-in cartridge configuration

• Leakproof screw pressure adjustment

• 60 L/min (16 US gpm) maximum flow

• 350 bar maximum pressure

• 100:1 pilot ratio

• Nitrile sealing

• Suitable for industrial hydraulic oils

• Compact cartridge installation

• Suitable for hydraulic manifolds and HIC systems

• Designed for pump unloading and accumulator-type hydraulic circuits

The Eaton catalog specifies that the 1UL60 cartridge is intended for installation into special line bodies or custom hydraulic integrated circuits, with provision for the required system check valve and pilot line. (Robeck Fluid Power)

Verified Specifications

Specification	1UL60-P-35S
Brand	Vickers / Eaton
Model	1UL60-P-35S
Part Number	407AA00033A
Series	1UL60
Valve Type	Relief / Unloading Valve
Construction	Spool, pilot operated
Installation	Screw-in cartridge
Maximum Flow	60 L/min (16 US gpm)
Maximum Pressure	350 bar
Pressure Range	150–350 bar
Standard Pressure Setting	200 bar
Adjustment	Leakproof screw
Pilot Ratio	100:1
Seal	Nitrile
Valve Ports	3
Housing Ports	3
Recommended Filtration	18/16/13
Operating Temperature	-30°C to +90°C
Cavity	A3146 / AXP3146*

The Eaton catalog confirms the 150–350 bar range and 200 bar standard setting for the 35 pressure-code version. Current distributor data also identifies 407AA00033A as model 1UL60-P-35S. (Hydraulic Supply Company)

*Cavity nomenclature varies between references; the Eaton/Vickers documentation should be used when machining or verifying the manifold cavity.

Pressure Setting

For the 1UL60 series, Eaton's model coding gives:

• 10 = 40–100 bar range, standard setting 75 bar

• 20 = 70–210 bar range, standard setting 100 bar

• 35 = 150–350 bar range, standard setting 200 bar

Therefore, 1UL60-P-35S belongs to the 150–350 bar pressure range, with a catalog standard setting of 200 bar at 4.8 L/min. (Hydraulic Supply Company)

Actual operating pressure/setting should be checked against the machine hydraulic circuit and the valve's current adjustment.

Applications

The Vickers Eaton 1UL60-P-35S can be used in:

• Hydraulic power units

• Pump unloading circuits

• Accumulator charging systems

• Hydraulic presses

• Industrial machinery

• Manufacturing equipment

• Hydraulic manifolds

• Hydraulic Integrated Circuits (HIC)

• Mobile hydraulic equipment

• Construction machinery

• Palm oil processing machinery

• Mining equipment

• OEM hydraulic systems

How the 1UL60-P-35S Works

The 1UL60 is designed to control hydraulic pressure through a pilot-operated unloading arrangement.

When the hydraulic system reaches the unloading pressure, the pilot section controls the main spool and allows the pump flow to be unloaded. As system pressure falls, the valve returns toward the loaded condition.

This makes the valve particularly useful in hydraulic systems where the pump should not continuously operate against high pressure, including accumulator circuits and pump unloading applications. (Robeck Fluid Power)

Model Number Breakdown

1UL60-P-35S

Code	Meaning
1UL60	Cartridge-only relief/unloading valve
P	Leakproof screw adjustment
35	150–350 bar pressure range
S	Nitrile seal

This coding is consistent with Eaton's published 1UL60 product documentation. (Hydraulic Supply Company)

Related 1UL60 Models

For SEO and product discovery, the following related models are useful to list:

Model	Part Number	Pressure Range
1UL60-P-10S	407AA00042A	40–100 bar
1UL60-P-20S	407AA00032A	70–210 bar
1UL60-P-35S	407AA00033A	150–350 bar
1UL60-P-35SV	407AA01679A	150–350 bar
1UL60-G-35S	407AA01669A	150–350 bar

Distributor catalog data confirms these model/part-number combinations. (Robeck Fluid Power)

Related Variant

1UL60-P-35SV uses the SV/Viton seal configuration rather than the standard Nitrile S seal. Eaton's catalog describes SV as the option for higher-temperature and certain special-fluid applications. (Hydraulic Supply Company)

Alternative Models

Depending on the required pressure range and seal material, alternatives within the same series may include:

• Vickers Eaton 1UL60-P-10S

• Vickers Eaton 1UL60-P-20S

• Vickers Eaton 1UL60-P-35SV

• Vickers Eaton 1UL60-G-35S

• Vickers Eaton 1UL65 bodied versions

Important: These are not necessarily direct drop-in replacements. Verify pressure range, adjustment method, seal material, cavity, manifold arrangement and hydraulic circuit requirements before substitution.

FAQ

What is the Vickers Eaton 1UL60-P-35S?

It is a pilot-operated relief/unloading screw-in cartridge valve from the Vickers/Eaton 1UL60 series.

What is the part number for 1UL60-P-35S?

The commonly referenced part number is 407AA00033A. (SunSource)

What is the maximum flow of the 1UL60-P-35S?

The published maximum flow is 60 L/min (16 US gpm). (Hydraulic Supply Company)

What is the maximum pressure?

The maximum pressure rating is 350 bar (5,000 psi). (Hydraulic Supply Company)

What is the pressure range of the 35 version?

The 35 pressure code corresponds to 150–350 bar, with a catalog standard setting of 200 bar. (Hydraulic Supply Company)

What type of seal does 1UL60-P-35S use?

The S designation indicates Nitrile (NBR) seals. (Hydraulic Supply Company)

Is 1UL60-P-35S a cartridge valve?

Yes. The 1UL60 version is the cartridge-only configuration for installation into an appropriate body or hydraulic manifold. (Hydraulic Supply Company)

What is the difference between 1UL60-P-35S and 1UL60-P-35SV?

The primary listed difference is the seal material: S = Nitrile, while SV = Viton/FKM. Selection should be based on hydraulic-fluid compatibility and operating temperature. (Hydraulic Supply Company)

Can 1UL60-P-35S replace another hydraulic unloading valve?

Not automatically. The replacement must match the cartridge cavity, pressure range, flow requirement, seal material and hydraulic circuit configuration.

Why Buy From ASIA-MECH HYDRO-PNEUMATIC?

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We can assist with:

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For quotation or replacement enquiries, provide the complete model number, part number and a photo of the existing valve where possible.

Datasheet / Catalog

The Eaton Hydraulic Screw-in Cartridge Valves (SiCV) catalog contains the 1UL60 series model coding, specifications and dimensional information. (Hydraulic Supply Company)

Recommended product-page document: Eaton Hydraulic Screw-in Cartridge Valves (SiCV), document E-VLSC-MC001-E6.

SEO / GEO / AEO

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AEO Answer:
The Vickers Eaton 1UL60-P-35S is a pilot-operated hydraulic relief/unloading cartridge valve with a 60 L/min maximum flow rating and 350 bar maximum pressure rating. It uses a leakproof screw adjustment and Nitrile seals and is designed for installation as a screw-in cartridge in hydraulic manifolds and related circuits. (Hydraulic Supply Company)

GEO recommendation: Include the exact 1UL60-P-35S, 407AA00033A, Vickers/Eaton, 60 L/min, 350 bar, pressure range 150–350 bar, and related 1UL60 model numbers prominently on the page so search engines and AI systems can accurately associate the product with its specifications and replacement searches.