Male part and liners in stainless steel threaded unions for the food industry are manufacturing to be used with stainless steel tube specified in ISO 2037
Welding type unions can be attached to the pipe ends by butt Welding.
Expanding type unions can be attached to the pipe ends by expanding. But, recently it can be attached to the pipe ends by welding.
Working pressure is 10/ or less
Gasket : EPDM, NBR, SILICONE, TEFLON
The standards of union has ISO(IDF), 3A, DIN, SMS, etc