The Cold Touch – Cryogenic Valves in the LPG Industry
The process of keeping natural gas in liquid form is one that requires cold. Serious cold. -162°C to be precise; the exact temperature at which compressed methane turns to liquid, making it easier and more efficient to store and transport. Without being able to work at this temperature, facilities such as the Milford Haven terminal simply wouldn’t exist.
All aspects of the LPG (liquefied petroleum gas) process – conversion, storage, transport – need to be suitably equipped to cope with these extremely low temperatures (as low as -196°C in some circumstances), and that includes the valves.
That’s why Hobbs Valve manufactures its range of cryogenic triple offset butterfly valves, designed to withstand the -196°C temperatures and allow for the flow and control of LNG or LPG at storage or conversion facilities.
The criteria we set for our cryogenic valves are:
- Full isolation to be maintained at cryogenic temperatures
- No open cavities, so fluids are unable to remain trapped after the valve is operated
- Metal-to-metal sealing (virtually unaffected by very low temperatures; the valve performance and the operating torque are identical at ambient and cryogenic temperatures)
In addition, we adhere to all the relevant design codes for cryogenic valves:
- BS EN 1626:2008 – Cryogenic vessels. Valves for cryogenic service
- BS 6364:1984 – Specification for valves for cryogenic service
- MSS SP-134-2006a – Valves for Cryogenic Service Including Requirements for Body/Bonnet Extensions
In this way, we work to ensure the safety of all operatives and LPG sites, and the long-term viability of LPG as a way of generating fuel for use across the world.
To find out more about our range of cryogenic butterfly valves, please get in touch with our skilled sales team.