Blog T07 - New three way valve Article T07 - New three way valve By I.S.T. Molchtechnik GmbH on 25.09.2015 Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp Share on Telegram Share via Email Share link Check icon Close We re-designed our proven three way valve with in major areas. Of course we kept the compact design but we once again improved the durable sealing system.