The laboratory is built up base on the most popular standard of the press fitting. Such as:

DVGW Worksheet W 534 

ASME B16.51

IAPMO: PS-117

Canadian Registration Number (CRN): 0A14541.5 A/B/C

FM Class 1920

ANSI/CAN/UL 213

CSA: ANSI LC 4a/CSA 6.32a