Safety Valves

To API 526 flanges

Our valves according to API 526 —available in Conventional and Balanced versions— offer full lift, top-guided design, single adjusting ring, and high discharge capacity.
They are suitable for gases, vapors, and liquids, and can be supplied with open/packed lever, locking screw, and other accessories.
Special versions comply with NACE MR0175.

Thermal relief with flanged ends

Compact design for overpressure protection due to thermal expansion in closed circuits.
Manufactured in carbon steel or stainless steel, with adjustment ranges from 1 to 102 bar.

Threaded

Series 000 (duralumin).
For low-pressure gases; sizes 1″×1¼″ and 1½″×2″; range 0.2–1 bar, 0–60 °C.

Series 050 (iron).
For gases, vapors, and liquids; sizes from ¾″×1″ up to 2″×2½″; 1–12 bar, 0–100 °C.

Series 500 (duralumin with diaphragm).
For gases and low flow rates; ½″×½″; 0.02–1 bar.

Series 600.
Male and female BSPT/NPT or optional flanged; sizes ½″×1″ to 2″×2″; 1–400 bar, –30 °C to 300 °C; NACE optional.

Series 650.
Three-way valve; 1″ and 1½″; 1–50 bar, –29 °C to 180 °C.

Series 800 (bronze).
For gases, air, and nitrogen; ¼″ to 1″; 4–60 bar, 0–60 °C.