Valmax sample photo:
Globe valve 2"-8" 150LB RF flange end, OS&Y, bolted bonnet, integral seat, rising stem, full welding bellow sealing, handwheel op
Body/Bonnet: ASTM A351 CF8M
Plug: ASTM A182 F316
Stem: ASTM A182 F316
Valve standard: BS1873
Flange standard: ASME B16.5
Sealing pressure test: 22BAR
Shell pressure test: 30BAR
Valmax bellows valve
The bellows valve is often used in locations where the sealing performance of the stem is severely required without any external leakage permitted. The bellows valves of Valmax Company include bellows gate valves, bellows globe valves and bellows ball valves. The bellows valve can enhance the sealing performance at the stem part, eliminate the looseness and leakage caused by rotation movement of the stem and protect the stem from being corroded by the medium and endow the stem with the feature of dual packing sealing. It is suitable for such industries as polyester, chemical fiber, heat medium pipe, high vacuum and nuclear industry.
Describes the design and product range:
◇ Design basis: API600, API602, API6D, ASME B16.34, GB/T12234
◇ Flanged ends: ASME B16.5, GB/T9113
◇ Butt-welding ends: ASME B16.25, GB/T12224
◇ Face-to-face dimension: ASME B16.10, GB/T12221
◇ Inspection and test: API598, API6D, JB/T9092
◇ Pressure rating: Class150~1500, PN16~PN250
◇ Product range: 1/2"~24", DN15~DN600
◇ Shell materials: WCB, CF8M, WC6, WC9
◇ Bellows materials: 316, Inconel, Hastelloy C
Design features:
◇ Formed bellows
◇ No fault and leakage under operations of 10, 000 times
◇ Design of bellows and packing dual stem seal
◇ Overlay welding by hard alloy can be performed on the seat surface according to specifications in API600
◇ Guaranteeing zero leakage of stem