SIGMA ENGINEERING

Today, Sigma Engineering, LLC is the worldwide leader in replacement caps for refrigeration service valves. Our goal is to be your first source, with the best service, for the OEM and wholesale HVAC/R replacement parts in which we specialize... Sigma Engineering LLC is your source for quality HVAC/R parts and supplies. We are the proud supplier for Standard Refrigeration replacement parts for legacy and newly built products.

Also known as: Sigma Engineering LLC

Primary location: Petersburg United States