Ball valve with spring return

The automatic self-closing function is the special feature of the ball valve series HF. After loosen the handle the ball valve goes to close position by spring force. For lower action force during the opening procedure the dimension of the handle is bigger than the handle of conventional ball valves.
 
Of course for the production of this ball valve only high quality materials come to use: the body and the ball are made of rust and acid resistant stainless steel 1.4408 (AISI 316). The seals are made of PTFE, the ball seats are additional reinforced with glass fibre.