• Tel
• 02155433645
• | Cell
• 09375655999

self-acting relief

A self-acting relief valve consists of a steel or brass body, pressure adjustment spring, disc, and control stem, designed to protect hydraulic and pneumatic systems from overpressure. Operating pressure typically ranges from 1 to 250 bar, with adjustable flow rates from 5 to 500 liters per minute. Springs are designed with specified stiffness and lengths of 30 to 150 millimeters to ensure precise and stable opening pressure, with temperature tolerance from -20 to 120°C.

Discs and stems are made with wear-resistant coatings and surface hardness of HRC 45 to 55, ensuring over 50,000 open-close cycles. Installation uses flanges or threaded connections according to ISO and DIN standards, and each valve undergoes hydrostatic testing and zero-leak inspection. Design compliant with API 526 and ISO 4126 ensures extended hydraulic system service life.
WEBSITE: self-acting relief Iran