Bellow Seals Valve
As a primary method to prevent valve stem leaks. Rizzio incorporate a specially designed hydroformed bellows seal with a secondary low emission packing seal,our bellow seal valve available in ASME classes 150, 300 and 800 in a variety of materials.
Bellow Seal Valve Features:
Every bellow assembly is helium leak-tested to assure zero leakage.
Non-rotating stems prevent torsion of bellow.
Secondary stem seals include: Stem backseat
Construction: gate ,globe
Material: Stainless steel
class Series: ANSI 800 lbs,class 150,class 300,class 600,class 800,class 900,class 1500
Diameters: DN15 to DN50 ;1/2″~2″
Standard: API602,API 600, BS 1873
Connection: threaded NPT – or SW / BW
tested: API 598
API 624 stem packing