High Performance
High Performance Safety Valve from LESER

Safety valves for all industrial applications

  • High capacities in comparison to nominal size
  • Wide range of nominal sizes
  • Wide range of options available
  • Excellent price-performance ratio
  • LESER Nanotightness: Exceeds the tightness requirements of API 527 by 50%

Approvals

LESER High Performance safety valves are designed, marked, produced and approved according to the requirements of the following regulations:

  • LESER CE Approvel
  • LESER ASME Approvel
  • LESER EAC Approvel
  • LESER Chinese TS Approvel

Valve Types

Type 441, 442 DIN

DIN Flange

DN 20 - DN 200 (3/4" - 8")

Type 441, 442 ANSI

ANSI Flange

DN 25 - DN 100 (1" - 4")

Type 441, 442 XXL

High nominal diameter

DN 200 - DN 400 (8" -16")

Type 444 DIN

Deep-drawn body

DN 25 - DN 80 (1" - 3")

Type 444 ANSI

Deep-drawn body

DN 25 - DN 80 (1" - 3")

Type 441, 442 Full nozzle DIN

Nozzle

DN 25 - DN 50 (1" - 2") 

Type 441, 442 Full nozzle ANSI

Nozzle

DN 25 - DN 100 (1" - 4") 

Type 455, 456

High pressure with seat

DN 25 - DN 100 (1" - 4") 

Type 457, 458

High pressure with seat

DN 25 - DN 150 (1" - 6") 

Technical data High Perfomance

Nominal Diameter at Inlet
DN 20 - DN 400 | 3/4" - 16"
Actual Orifice Diameter d₀
18 mm - 295 mm | 0.71 in - 11.61 in
Actual Orifice Area A₀
254 mm² - 68349 mm² | 0.394 in² - 105.942 in²
Pressure
0.1 bar - 300 bar | 1.5 psig - 4,350 psig
Temperature (in accordance with DIN EN)
-270 °C to 550 °C | -454 °F to 1,022 °F
Body Material
0.6025, 0.7043, 1.0619, 1.4408, 1.0460 / 1.0425, 1.4571, 1.4404, 1.4581, 1.7357 | Cast iron, Ductile Gr. 60-40-18, SA 216 WCB, SA 351 CF8M, carbon steel, 316Ti, SA 479 316L, SA 351 CF10M , SA 217 WC6
Valve Connection
Flange in accordance with DIN EN 1092 or ASME B 16.5
Bellows Material (optional)
Stainless steel, elastomer
Load Type
Spring-loaded
Valvestar from LESER

VALVESTAR®

Sizing of your safety valve.

VALVESTAR®
Download Area of LESER

Downloads

In our comprehensive download area you will find all necessary documents and detailed information on safety valves you need.

Download area
Contact LESER Teaser

Contact LESER

Send a message to LESER

Contact
	LESER_Contact_worldwide_Teaser

Contact finder

Your local contact person will support you with all questions concerning the safety valve.

Find your local contact