LESER Safety Valves
Valveforce is a UK distributor of LESER Safety Valves, globally trusted for their precision, fast response and adherence to safety standards across high-stakes process environments. By combining LESER's safety-engineered valves with Valvefore's technical support and expert service, your operations benefit from maximum protecton, compliance and long-term reliability.
Valveforce are a UK distributor of LESER Safety Valves
LESER safety valves are globally recognised for providing reliable overpressure protection across a wide range of industrial applications. Based in Germany and with over 200 years of engineering expertise, LESER designs and manufactures its valves to meet stringent international standards, including PED and ASME, ensuring safety, compliance, and long-term durability in demanding environments. Prefabrication and assembly are largely carried out on automated production lines. Through this process, LESER ensures the consistently high-quality standard of the products, regardless of whether it is a series component or an individual production of your choice.
Areas of Application for LESER Safety Valves
From high-pressure process plants to critical utility systems, major global companies in the chemical, oil and gas, petrochemical, energy, technical gases, LNG/LPG, pharmaceutical, food and beverage, shipbuilding and HVAC sectors rely on LESER valves to safeguard their operations.
Key Areas of Application:
Oil & Gas
Petrochemical Processing
Power Generation
Steam & Boiler Systems
Chemical & Process Industries
Marine & Offshore Environments
How can Valveforce help?
At Valveforce, safety and compliance are non-negotiables. As a UK distributor for LESER, we offer comprehensive safety valve solutions—including specification, delivery, and lifecycle support—so your systems remain safe, compliant, and efficient.
By combining LESER's safety-engineered valves with Valveforce's expert service, your operations benefit from maximum protection, compliance, and long-term reliability.
We provide:
- Expert valve sizing & selection, pairing LESER’s engineering excellence with our process knowledge
- Custom-built safety valve assemblies, including spring-loaded, pilot-operated, and critical-service options
- Efficient stock and fast delivery, reducing downtime and keeping critical systems protected
- Full support through installation, commissioning, and planned maintenance
- Access to LESER’s advanced tools, such as VALVESTAR® sizing software, digital support, and global certification
For expert advice or more information about LESER Safety Valves please contact our specialist team on 0121 711 1908 or email info@valveforce.co.uk. We're here to help you find the right solution.
High Efficiency Pilot Operated Safety Valves
Type 811
Pilot-Operated Safety Valves according to API 526 - Pop Action
DN 25 - DN 200 | NPS 1 to NPS 8
2,5 - 255,5 bar | 36,0 - 3705,0 psig
Type 821
Pilot-Operated Safety Valves according to API 526 Modulate Action
DN 25 - DN 200 | NPS 1 to NPS 8
1,0 - 650,0 bar | 15,0 - 9427,0 psig
Type 814
Pilot-Operated Safety Valves with two opposite outlets - pop action
DN 100 - DN 200 | NPS 4 to NPS 8
2,5 - 102,1 bar | 36,0 - 1480,0 psig
Type 824
Pilot-Operated Safety Valves with two opposite outlets - Modulate Action
DN 100 - DN 200 | NPS 4 to NPS 8
2,5 - 102,1 bar | 36,0 - 1480,0 psig
Require Further Information About LESER Valves?
High Performance Safety Valves
Type 441 442 DIN
Full lift safety valve with rolled-in seat , DIN flange connections
DN 20 - DN 400 | NPS 3/4 - NPS 16
0.1 - 40 bar | 1.5 - 232 psig
Type 441, 442 ANSI
Full lift safety valve with rolled-in seat , ASME flanged connections
DN 25 - DN 100 | NPS 1 - NPS 4 psig
0.1 - 51 bar | 1.5 - 740 psig
Type 441, 442 Full nozzle DIN
Full lift safety valve with Nozzle , DIN flange connections
DN 25 - DN 50 | NPS 1 - NPS 2
0.1 - 40 bar | 1.5 - 580 psig
Type 441, 442 Full nozzle ANSI
Full lift safety valve with Nozzle , ASME flange connections
DN 25 - DN 100 | NPS 1 - NPS 4
0.1 - 51 bar | 1.5 - 740 psig
Type 444 DIN
Full lift safety valve with deep drawn stainless steel body , DIN flange connections
DN 25 - DN 80 | NPS 1 - NPS 3
0.1 - 16 bar | 1.5 - 232 psig
Type 444 ANSI
Full lift safety relief valve with deep drawn stainless steel body , ASME flanged connections
DN 25 - DN 80 | NPS 1 - NPS 3
0.1 - 16 bar | 1.5 - 232 psig
Type 455, 456
Full lift safety valve with rolled-in-seat
DN 25 - DN 100 | NPS 1 - NPS 4
2.5 - 100 bar | 36 - 1,450 psig
Type 457, 458
Full lift safety valve with nozzle
DN 25 - DN 150 | NPS 1 - NPS 6
2.5 - 300 bar | 36 - 4,350 psig
Modulate Action Safety Valves
Type 431, 433
Standard Safety valves with rolled-in seat, DIN and ASME flange connections
DN 15 - DN 150 | NPS 1/2 - NPS 6
0.2 - 40 bar | 2.9 - 580.15 psig
Type 431 433 PN 160
Standard Safety valves with screwed seat , DIN and ASME flange connections
DN 15 | NPS 1/2
0.3 - 160 bar | 4.35 - 2320.6 psig
Clean Service Valves
Type 481
Small capacity for safeguarding secondary processes in hygienic applications
DN 15 - DN 25 | NPS 3/4 to NPS 1
0.1 - 68 bar | 1.5 - 986 psig
Type 483
Safety valve for hygienic applications with standardized aseptic connections
DN 25 - DN 40 | NPS 1 to 2 NPS
0.1 - 16 bar | 1.5 - 232 psig
Type 484
Integrated in containers for safeguarding high-purity applications
Container flange
0.1 - 16 bar | 1.5 - 232 psig
Type 485
Safety valve with pipeline integration for safeguarding high-purity applications
Pipe passage DN 25 - DN 50 | NPS 1 - NPS 2
0.1 - 16 bar | 1.5 - 232 psig
Type 488
Safety valves for the protection of high capacities in hygienic applications
DN 25 - 100 | NPS 1 - NPS 4 1/2
0.1 - 16 bar | 1.5 - 232 psig
Critical Service Valves
Type 447
Safety valves with PTFE full lining in inlet and outlet area for highly corrosive media
DN 25 - DN 100 | NPS 1 - NPS 4
0.1 - 16 bar | 1.45 - 232 psig
Type 447B
Safety valves with conductive PTFE full lining in inlet and outlet area for explosive applications
DN 25 - DN 100 | NPS 1 - NPS 4
0.1 - 16 bar | 1.45 - 232 psig
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