| 摘要 |
<p>PURPOSE: To provide a pressure regulating valve which releases excessive pressure in a storage medium into the atmosphere and uses a flexible O-ring valve seat surely sealing and obstructing leakage through a valve element. CONSTITUTION: This pressure regulating valve comprises a lower valve barrel 2 and an upper valve barrel 3. A valve seat member 9 is secured in the lower valve barrel 2. The valve seat member 9 includes an annular dovetail groove for accomodating and retaining a fluorocarbon rubber O-ring valve seat 17. A valve element 30 and stem 26 are slidably arranged in a stem guide member 20 arranged in the upper valve barrel 3. The valve element 30 is brought in contact with the fluorocarbon rubber O-ring valve seat 17 by the spring force of a compression coil spring 36, to surely seal off the air flow between an inlet passage 6 and an outlet passage 50.</p> |
