Soft Seated Or Metal Seated Ball Valves
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GUIDANCE ON VALVE TYPE SELECTION -b.ricardo
blog.projectmaterials.com1. Soft seated valves should normally be selected only for clean service. Soft seated block valves, such as ball valves, lined plug valves, soft seated gate valves, and butterfly valves can provide a good tight shut off on gas or liquid when new. Hard metal seated valves should normally be selected if the service is other than clean. 2.
PIPING MATERIAL SPECIFICATION (PROJECT STANDARDS …
www.klmtechgroup.comAPI 607 Fire Test for Soft-seated Quarter-turn Valves API 608 Metal Ball Valves-Flanged, Threaded, and Welding End API 609 Butterfly Valves: Double Flanged, Lug- and Wafer-Type AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM For materials of regular piping part BRITISH STANDARD (BS) BS 1868 Steel Check Valves(Flanged and Butt-Welding ...
Floating Ball Valves - Bonney Forge Corporation
bonneyforge.comBall valves are intended to be used as on/off fl ow ... the upstream medium pressure push the ball into the downstream metal seat lip to cut off the line fl uid and prevent internal leakage due to a secondary metal-to-metal seals. When the fi rst soft seal is damaged, body/gland/stem gasket will and prevent external fl uid leakage.
ORBIT Valves
www.orbitvalves.comSoft or metal-seated options are selected for the intended service. Because the seals in the valves do not rub, and because they are mechanically compressed shut, they survive in high-temperature and abrasive situations. Operation Hand or power operation can be selected. CameronÕs ORBIT brand offers double-acting, spring-close and
PRESSURE AND FUNCTIONAL TESTING API 598 - Global …
globalsupplyline.com.auNot performed on metal seated check valves. Scope: 100% of batch. To apply from both directions. Testing pressure: Between 4 & 7 bars Testing times: See table Nº 2 Acceptance criteria: See table Nº 3 This test is optional depending on size, class & type but on API 608 valves and API 600 gate valves it is always performed by GSL. 1.
Series 51/52 Flanged Ball Valves - Pneumatic Control
pneumaticcontrol.comSeries 51/52 valves are two-way flow ball valves designed to seal bi-directionally against resilient seats. The ball is forced downstream under pressure against the downstream seat to effect and maintain a seal. The resiliency of the seats is a result of design as well as the characteristics of …