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Cryogenic Butterfly Valves

Today, there is demand for industrial valves to operate under conditions such as temperatures as low -196°C to provide suitable tight shut-off solutions in industries such as LNG and LPG processing. Even though the industrial standard is getting higher, few valve manufacturers can meet the requirements. However, Qublock’s specially designed cryogenic butterfly valves offer its valuable customers the ultimate solutions for leak tight isolation, throttling, and flow control through quick operations.

BS (British Standard) 6364

The newly invented QF-series Quattlok butterfly valve was able to achieve zero leakage at -196°C during a test in accordance with British Standard (BS) 6364. The latest version of Qublock’s triple offset butterfly valve has eliminated several disadvantages, especially for cryogenic applications.

Extended Bonnet

An extended bonnet composed of a sufficiently large gas column keeps the stem packing away from cryogenic fluids. Usually, supplied in a fabricated or cast condition with a minimum length of 250 mm, Qublock’s design capability provides a solution to the customer’s specific need. The extension bonnet is linked to the valve using an ISO standard flange connection.

Low Fugitive Emission

The quarter turn operation lowers fugitive emissions compared to the operation of multi-turn-type valves. Qublock can offer valuable gland packing options that are suitable for various customer requirements.

Applicable Rating

ASME Class 150, 300, 600, 900, 1500, 2500, JIS 10K, 20K, 30K, 40K, 63K.

Suitable for Extremely Low Temperature Use

Qublock’s cryogenic butterfly valve is designed to provide throttling or on-off control of liquids and gases at cryogenic temperatures as low as -196°C.