HydraForce Introduces HTS38-34 Direct-Acting Proportional Pressure Reducing/Relieving Valve

Compact, fast-response valve with low leakage for demanding hydraulic circuits now in full production

Lincolnshire, IL – September 30, 2025 – HydraForce today announced the full production release of its HTS38-34 proportional pressure control valve, a direct-acting, compact solution designed to deliver high-pressure capability, fast response times and low leakage in an industry-standard cavity.

Engineered to maintain stable control at high flow in demanding hydraulic circuits, the HTS38-34 combines a maximum inlet pressure of 350 bar (5,000 psi), control pressure up to 152 bar (2200 psi) and a flow capacity of stable control from 0 to 19 lpm (5 gpm) with a maximum internal leakage of 95 ml/min (5.8 in³/min), which is 40% less than other direct acting valves and 70% less than pilot operated valves. Its direct-acting design provides rapid response and reliable performance, making it ideal for braking, clutch and pilot control functions in mobile and agricultural equipment that demand precise and consistent pressure control.

“By combining high pressure, fast response, and low leakage in a compact, cost-effective design, the HTS38-34 offers OEMs new flexibility in building efficient hydraulic systems,” said Brian Del Bene

Product Manager, Bosch Rexroth Compact Hydraulics. “We are excited to bring this solution into full production and make it more widely available for mobile and off-highway equipment manufacturers.”

Target applications include:

  • Agricultural downforce and mechanical weeders: Delivers faster response time than slower directional or flow control valves.
  • Braking systems: Provides low leakage performance for agricultural and forestry vehicles to meet secondary brake regulations, an anticipated requirement of the EU Brake Directive 2015/68.
  • Differential control: Enables smooth pressure ramping for locking differentials or slip torque adjustments with low leakage at a competitive cost.
  • Baler tensioning: Offers stable, low-leakage operation for tensioner circuits.

A planned 2026 revision will allow the HTS38-34 to be a drop-in replacement within the industry standard -08 size 3-way cavity, further simplifying integration.

For more information, specifications and CAD models of the HTS38-34 proportional pressure control valve, visit www.hydraforce.com/products/cartridge-valves/electro-proportional-valves/hts38-34/

About HydraForce

HydraForce, is a global designer and manufacturer of motion control systems, encompassing hydraulic cartridge valves, manifolds and electronic controls for a variety of off-highway industries, including farming, construction, marine, material handling, mining, and forestry. HydraForce was acquired by Bosch Rexroth, becoming a significant part of the Compact Hydraulics Business Unit. Bosch Rexroth and HydraForce combine their presence in complementary regions to provide comprehensive coverage in Europe and North America, while enabling growth in Asia.

Media Contact:
Christina Alvarez

calvarez@mulberrymc.com

708-908-0898

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