Type 441,442,444,455,456,457,458 LESER PRODUCT OVERVIEW(Safety Valves)
HIGH PERFORMANCE
Flanged safety valvesSafety Valves with especially high capacity for their size. With a large quantity of valve sizes, pressure ranges and product options, they have proven themselves as a universal safety valve for many applications.
ADVANTAGES
High blow-off capacity in comparison to valve size
Universal valve for many applications up to DN 400 / 16" or 300 bar / 4350 psig
Proven thousands of times
Outstanding value for the price
Simple and robust construction
Single trim (identical internal parts for steam/gas/liquid) allows economical maintenance
Large selection of options for different operating conditions
Quick delivery (2 - 4 weeks from the factory or next day from local warehouse)
Can be equipped with additional supplementary loading system or bursting discs
link:http://www.leser.com/en/products/product-overview/high-performance-valves.html