Suttner ST261 Unloader Valve – 250 Bar, 30 LPM

Product Overview

The Suttner ST261 Unloader Valve is a premium pressure-compensating trapped pressure unloader designed for professional and industrial pressure washer systems. Manufactured by Suttner, it provides smooth pressure regulation while protecting pumps and associated components from excessive pressure build-up.

Featuring a straight flow-through design, the ST261 minimises pressure loss while delivering consistent performance. The adjustable pressure setting allows the maximum operating pressure to be accurately set, making it suitable for a wide range of commercial and industrial cleaning applications.

Constructed with a robust brass body and high-quality stainless steel internal components, the ST261 offers excellent durability, corrosion resistance and long service life. The valve is also designed for easy servicing, with internal bypass components accessible without removing the valve from the machine.

Key Features

• Genuine Suttner ST261 pressure-compensating unloader valve
• Maximum working pressure of 250 Bar
• Maximum flow rate of 30 LPM
• Maximum water temperature of 80°C
• Pressure-compensating trapped pressure design
• Straight flow-through construction reduces pressure loss
• Adjustable pressure regulator
• Brass body with stainless steel internal working components
• PTFE and Viton sealing components for excellent heat and chemical resistance
• Serviceable internal bypass without removing the valve from the machine

Applications

Suitable for:

• Industrial pressure washers
• Hot and cold water pressure washer systems
• Commercial cleaning equipment
• Vehicle wash systems
• Agricultural cleaning equipment
• Fixed and mobile pressure washing installations

Technical Specification

Manufacturer: Suttner
Series: ST261
Valve Type: Pressure-Compensating Trapped Pressure Unloader Valve
Maximum Working Pressure: 250 Bar (3,625 PSI)
Maximum Flow Rate: 30 LPM (8 GPM)
Maximum Water Temperature: 80°C
Inlet Connection: 3/8" BSP Female
Outlet Connection: 3/8" BSP Female
Bypass Connection: 1/4" BSP Female
Pressure Gauge Port: 1/4" BSP Female
Body Material: Brass
Internal Components: Stainless Steel
Seal Material: PTFE & Viton

Contact Flowjet

If you need assistance selecting the correct Suttner unloader valve or confirming compatibility with your pressure washer, our experienced team is here to help.

Flowjet Cleaning Equipment Ltd
Unit 4, Gatebeck Farm
Gatebeck, Kendal
LA8 0HW
United Kingdom

Telephone: 01539 566193