Why lt butterfly valve is the Function You Can't Ignore

 Here are some key reasons why the function of lt butterfly valve cannot be ignored:


Low Temperature Sealing - They utilize special elastomer seats designed to maintain a bubble-tight shut off below -50°C where regular valves may leak. This is critical for processes like LNG.


Actuation Options - Can be outfitted with special actuators equipped with heaters to ensure reliable operation in freezing conditions where standard actuators may freeze up.


Cryogenic Service - Carefully selected alloys like cryogenic stainless steel or special coatings protect against embrittlement or cold cracking at very low temperatures.



Insulation - LT butterfly valves often feature extended stems and insulated bodied construction to prevent excessive heat loss/gain through the valve body.


Testing - Manufacturer testing includes cryogenic performance testing in a cold room to validate temperature rated capabilities before shipping.


Materials - Select non-metallic or specialized metal materials that do not become overly brittle or lose ductility at cold temperatures.


Standards - Must comply with standards like API 6D for cryogenic service and be qualified to intended ISO temperature class for applications.


Leakage - At sub-zero temperatures even small flange or stem leaks can cause embrittlement or damage critical cryogenic systems.


Proper low temperature design is critical for flow control in LNG, cryogenic gas processing and low temperature industrial applications.

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