The Rotork manPOWER range high-integrity fail-safe valve operation without the need for any power supply. The self-contained system is suitable for workshop or mounting on a wide range of rotary and linear operated valves and It offers a cost-effective solution for actuator applications where operation is infrequent. Typical applications include emergency shutdown valves and over-or under-pressure protection at remote, unpowered locations.Product Features:Completely self containedAdaptable for quarter-turn or linear serviceSimplified control circuit with a minimum of componentsBuilt-in temperature compensationHigh-pressure zero-leakage control systemWatertight or explosionproof constructionFail open or closedHigh-integrity stainless steel tube and fittingsManual reset after operation10 Bar (150 psi) or 100 Bar (1,500 psi) operating pressure suitable for actuator displacements up to 13.2 L (3.5 US gal)