Stainless Steel Globe Valve Type VG450 — Flanged Globe Valve for Corrosive and High-Temperature Service
The stainless steel globe valve type VG450 is a flanged globe valve with bolted bonnet and outside screw and yoke (OS&Y) rising stem. Actuation is by handwheel. Body and bonnet consist of 1.4408 (CF8M). In addition, disc and stem use F316.
The gland packing consists of graphite and is TA-Luft compliant. Moreover, the body gasket uses SS304 with graphite. This flanged valve PN40 covers nominal sizes DN15 to DN300. It is available in pressure ratings PN10, PN16 and PN40.
The maximum operating temperature is 400 °C. Flange connections conform to EN 1092-1, type B1. Furthermore, the face-to-face length follows EN 558-1 Series 1. The rising stem valve holds approvals to AD2000, NACE and PED 2014/68/EU. FERGO supplies the high-temperature globe valve ex stock.
Technical Data and Connection of the Flanged Globe Valve
This valve comes in fourteen nominal sizes. They range from DN15 to DN300. Pressure ratings cover PN10, PN16 and PN40. Flange connections conform to EN 1092-1, type B1. In addition, the face-to-face length follows EN 558-1 Series 1. The design follows EN 13709.
The maximum operating temperature is 400 °C. Therefore, the 1.4408 valve suits saturated and superheated steam applications. This applies especially to corrosive environments. Bolting is ASTM A194 8M / ASTM A193 B8M.
Materials and Approvals of the Rising Stem Valve
Body and bonnet consist of 1.4408 (CF8M). This austenitic cast stainless steel offers high resistance to acids, alkalis and chloride-bearing media. Disc and stem in F316 ensure reliable shut-off. They also withstand thermal and chemical stress.
The graphite packing and SS304-with-graphite body gasket meet TA-Luft requirements. They are designed for low-emission sealing. In addition, the flanged valve PN40 holds approvals to AD2000 for pressure equipment. It also meets NACE for sour service and PED 2014/68/EU.
Applications and Ordering of the OS&Y Valve
The rising stem valve protects chemical process lines. It also protects steam and condensate systems, pharmaceutical installations and food production lines. The austenitic 1.4408 body withstands aggressive media. Moreover, the rising stem indicates disc position externally. This gives a safety advantage in high-temperature and high-pressure applications. For custom solutions, project quantities or technical advice, the FERGO team is available.
