TIIS PSV-PC1815C

LESER Type 441 Safety Relief Valve, 28.4 Bar, DN 25 PN 40

Description

This is a high-performance, spring-loaded safety relief valve from LESER, model series Type 441. Engineered for reliability, it provides critical overpressure protection for pressure vessels, pipelines, and other industrial equipment. This unit is configured with a set pressure of 28.4 Bar and features standard DN 25 / PN 40 flanged connections for easy integration. The robust construction with a stainless steel body (1.4408) ensures durability and compatibility with various process media. The valve includes a manual lifting lever for operational testing. Order now from spareparts2day for expert support and fast delivery.

Specifications

• Manufacturer: LESER
• Model Series: Type 441
• Part Number: GL 1910480
• Function: Safety Relief Valve
• Set Pressure: 28.4 Bar
• Inlet Connection: Flange DN 25
• Pressure Rating: PN 40
• Body Material: 1.4408 (Cast Stainless Steel)
• Features: Manual Lifting Lever

Label Info

• Test Service: TIIS Industrial Services
• Valve ID: PSV-PC1815C
• Test Date: 28 September 2023
• Tested Pressure: 28.4 Bar

Application

Ideal for use in the chemical, petrochemical, oil and gas, and power generation industries for protecting systems containing liquids, gases, or steam from exceeding their maximum allowable working pressure.

Country of Origin

Manufactured in Germany.

CO2 Impact

By purchasing this pre-owned item, you are helping to avoid the emission of approximately 24 kg of CO2, which is equivalent to the savings from not manufacturing a new steel product of this weight.

Availability

This item is in stock and ready for immediate dispatch.

FAQ

Can the set pressure of this valve be adjusted?

Yes, the set pressure of a LESER Type 441 valve can be adjusted. However, this must be done by a qualified technician using a certified test bench to ensure accuracy and safety. The valve must be re-certified and tagged after any adjustment.

What is the material 1.4408, and what applications is it suitable for?

1.4408 is the cast-equivalent of 316 stainless steel. It offers excellent corrosion resistance, making it suitable for a wide range of media, including water, steam, oil, and many chemical applications.

What is the purpose of the black lever on the valve?

The black lever is a manual lifting device. It allows an operator to manually open the valve for testing purposes (e.g., to ensure it is not stuck) while the system is under pressure (typically at 75% or more of the set pressure). It is not meant for continuous operation.

Last Update: Friday, March 13, 2026

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