LESER Spring-loaded safety valve Type 548 series 433 steel low-lifting flange

Spring safety, usually designed for use with liquids and thermal expansion, but also for use with gases or steam for smaller capacities.
Due to the proportional operation at overpressure, there is a minimum discharge volume of the medium.
Metal-sealing design in accordance with LESER nano-tightness, which achieves a lower leakage than specified in API527, and therefore less loss of medium and less emission.

Available with:
BV.
DNV.
GL.
ABS.
Lloyds. EMEA.
RINA.
EAK.
NK.
TÜV.
PED/ISO 4126-1.
PED/AD 2000 Merkblatt A2.
AQSIQ.

• O-ring seal on the valve, material type to be selected based on process data.
• Stainless steel bellows (back pressure compensation or shielding of the spring cap).
• EPDM bellows (shielding of spring cap).
• Sensing.
• Heating jacket.
• Flanges in accordance with ASME.