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  • Pilot Operated Spool Pressure Reducing Valve
  • Pilot Operated Spool Pressure Reducing Valve

Pilot Operated Spool Pressure Reducing Valve

Pilot Operated Spool Pressure Reducing Valve are threaded hydraulic cartridge valves designed to reduce and maintain pressure in a secondary hydraulic circuit. Featuring a pilot-operated spool design with internal pilot control and internal spring chamber drain, these valves provide stable downstream pressure while also offering pressure relief protection. They are commonly used in hydraulic systems that require controlled pressure for specific actuators or auxiliary circuits.

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Specific Applications

·Secondary hydraulic pressure control
·Hydraulic power units (HPUs)
·Hydraulic manifold blocks
·Industrial automation equipment
·Construction and mining machinery
·Agricultural equipment
·Machine tools
·Auxiliary hydraulic circuits

Core Functions

Stable Secondary Pressure Regulation
The Reducing Valves automatically reduce inlet pressure and maintain a stable outlet pressure for secondary hydraulic circuits. This helps protect downstream components from excessive pressure while ensuring consistent hydraulic performance.

Pilot-Operated Spool Design
The pilot operated reducing valve uses a spool-type structure with internal pilot control and an internally drained spring chamber, providing smooth pressure regulation and stable operation in hydraulic systems.

High Pressure Capability
Designed for industrial hydraulic applications, the valve supports a maximum operating pressure of 240 bar, making it suitable for hydraulic circuits that require controlled secondary pressure.

Reliable Pressure Control
The hydraulic cartridge reducing valve has an internal leakage of up to 80 cc/min from Port 2 to Port 3 at 210 bar, providing predictable pressure regulation characteristics for secondary circuits.

Wide Operating Temperature Range
The valve operates within a temperature range of -30°C to +120°C. Hydraulic oil filtration of 20 μm or better is recommended to maintain stable spool movement and extend service life.

The performance data above are based on Model XPR-08-32.

Technical Specifications

Parameter

Specification

Product Name

Pilot Operated Spool Pressure Reducing Valve

Installation

Threaded Hydraulic Cartridge Valve

Representative Models

XPR-08-32, XPR-10-32, XPRDB, XPR-10-36, XPPDB

Maximum Operating Pressure

240 bar*

Flow Capacity

See Pressure Drop vs. Flow Curve

Internal Leakage

Max. 80 cc/min (Port 2 to Port 3) at 210 bar*

Operating Temperature

-30°C to +120°C*

Recommended Oil Filtration

20 μm or better*

Cavity

08-3

*Performance data are based on Model XPR-08-32. Specifications may vary depending on the selected model.


PilotOperatedSpoolPressureReducingValve

Function Choice Part Number Cavity Flow(Ipm) Pressure(bar) Page
PilotOperatedSpoolPressureReducingValve1 XPR-08-32 08-3 11  350  C-24
XPR-10-32 10-3 30  350  C-25
XPRDB T-11A 40  350  C-26
PilotOperatedSpoolPressureReducingValve2-zEy1 XPR-10-36 10-2 56  207  C-27
XPPDB T-11A 40  207  C-28
OEM / ODM Customization

We provide OEM and ODM services for hydraulic cartridge pressure reducing valves to meet different hydraulic system requirements.
·Pressure setting customization
·Thread and cavity customization
·Seal material options for different hydraulic fluids
·Custom logo and laser marking
·Packaging customization
·Hydraulic manifold integration support
·Technical assistance for model selection and equivalent replacement

Purchasing Information

Item

Details

MOQ

Standard cartridge valves: 100 pcs/model; Custom manifold blocks: 30 pcs minimum. Small trial orders are accepted.

Lead Time

Stock valves: 2 weeks; Regular orders: 6–8 weeks; Custom products: about 8 weeks after drawing approval and deposit.

Payment Terms

30% T/T deposit, 70% balance before shipment. Sample orders require full payment. L/C is negotiable for long-term customers.

Trade Terms

FOB Ningbo by default. CIF quotations are available upon request.

Sample Policy

Stock samples are available. OEM/ODM samples can be produced based on drawings or samples.

OEM / ODM

Logo engraving, customized packaging, and product customization are supported.

Quality Assurance

Every valve is pressure-tested before shipment and covered by a 12-month warranty.
FAQ

1. What is a pilot-operated pressure reducing valve used for?
A pilot-operated pressure reducing valve is used to reduce and maintain pressure in a secondary hydraulic circuit. It helps protect downstream hydraulic components and ensures stable operating pressure.

2. Which models are available in this series?
Representative models include XPR-08-32, XPR-10-32, XPRDB, XPR-10-36, and XPPDB. Different models are available to meet various hydraulic system and manifold requirements.

3. Are all models supplied with the same technical specifications?
No. The technical data shown on this page are based on Model XPR-08-32. Pressure ratings, flow characteristics, cavity sizes, and pressure adjustment ranges may vary depending on the selected model.

4. What oil cleanliness is recommended?
For reliable pressure regulation and longer valve life, hydraulic oil filtration of 20 μm or better is recommended.

5. How can I choose the right Pilot Operated Spool Pressure Reducing Valve model?
Selection depends on inlet pressure, required outlet pressure, flow rate, cavity size, hydraulic fluid, and circuit design. Our engineering team can recommend the appropriate Reducing Valves Pilot Operated Spool Type Pressure Regulation model based on your application requirements.

products
Though compact in size, hydraulic valves deliver critical functions as indispensable core components enabling multi-functional and automatic operation of mechanical equipment.
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Ningbo Stars Hydraulic Co., Ltd.

Founded in 2001, Ningbo Stars Hydraulic Co., Ltd. is a hydraulic valve manufacturer that upholds integrity and wins market recognition through superior quality and pragmatic craftsmanship. We introduced hydraulic valve technologies from Germany’s Rexroth and Japan’s Yuken series, and through years of dedicated research, digestion, absorption, modification and optimization, our products stand out in the market. Our valves sell well nationwide and are exported to overseas markets, earning praise and trust from numerous customers at home and abroad. Though compact in size, hydraulic valves deliver critical functions as indispensable core components enabling multi-functional and automatic operation of mechanical equipment. The quality of a hydraulic valve largely determines the overall operating performance of the entire machinery. Supported by national industrial policies, China’s machinery industry is striving to catch up with European and American counterparts to meet booming demands from agriculture, industry, construction, transportation, and land, sea and air defense sectors—this momentum has greatly boosted the domestic hydraulic industry. To embrace the new wave of machinery upgrading, our company has launched a new round of optimization and improvement for our valve products. Building on our existing valve manufacturing technologies and processes, and under the guidance of domestic and international industry experts as well as Taiwanese technical engineers, we have comprehensively upgraded product structures, internal workshop purification and precision of core components. We have implemented effective control over internal stress, thermal deformation, leakage and noise of valves. Every batch of raw materials, auxiliary parts, semi-finished and finished products undergoes rigorous item-by-item inspection. We have also strengthened full-process quality supervision, with zero tolerance for defective products leaving the factory, guaranteeing reliable and long-lasting product performance. Our after-sales service includes timely technical guidance and warranty support, plus follow-up tracking of product operating conditions throughout their service life. Product competition is essentially a contest of technology, workforce dedication, team competence and corporate management. More importantly, it hinges on the founder’s philosophy, integrity and service mindset. There is no end to pursuing premium quality. Committed to specialization, refinement, quality excellence and technological innovation, our company adheres to the manufacturing principle of “Better fewer than shoddy goods” and the service tenet of “Put ourselves in customers’ shoes”. Standing at a new developmental milestone, all staff at Stars sincerely seek cooperation with clients worldwide. We aim to build mutual trust and shared prosperity, and jointly create a brighter future for the hydraulic industry.

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