Posts Tagged ‘Valve’
ISO 5211/MSS SP-101 Mount Flange Dimension Comparison
July 24th, 2023 by Amanda Schumann
Valve, gearbox & actuator manufacturers often refer to obsolete/superseded mount pad drilling standards. Some derive from old USA standards that were not carried forward onto MSS SP-101. Some are metricated versions of MSS SP-101 which were never adopted by ISO 5211 but never the less, are in use. This comparison guide attached allows manufacturers, suppliers & […]
VALVE TEST STANDARDS
February 1st, 2018 by Amanda Schumann
A Technical guide to valve test standards
Self Relieving vs Double Piston Effect Seals on Ball Valves
December 20th, 2017 by Amanda Schumann
API6D trunnion mounted ball valves with single piston effect seats (SPE) are designed to automatically release cavity over-pressure into the pipeline automatically using “self relieving seats”. Since body cavity and pipeline are isolated in the fully open and fully closed position, pressure trapped in the body cavity may be different than pressure in the line. […]
Starline Welded Ball Valves for Gas Storage
December 13th, 2017 by Amanda Schumann
One piece seal welded body, floating ball double block. Primary seal METAL, to METAL, secondary seal vulcanized specially hardened Viton or NBR, pressure safe cover for the stem to prevent any leakage. For operation remove the cover. Completely in accordance to spec. KN251-005. Specifically designed as shut off drain and vent lines for larges valve […]
Sample of F51 Valve & Actuator Supplied from stock
June 1st, 2017 by Amanda Schumann
Sferova F51 TM ESDV Ball Valve (Norsok certified o-rings) c/w Air Torque heavy duty SIL3 certified, EX certified, heavy wall, low weight, Alloy, rugged heavy wall rack & pinion, high torque, 100{25ff19fb4bbe50b2512a26092ffa8499fbe25baf0e752d653cb6adacb3479290} Italian made, spring return actuator & controls. Supplied, fitted & tested by Global Supply Line Engineering in our Sferova & Air Torque approved […]
Consider ENP Trim Ball Valve where 316 trim is specified
May 10th, 2017 by Amanda Schumann
Global Supply Line stocks ENP trim trunnion on ball valves 75µm thick with 500 minimum HB (up to 900 HV) with 10-14% phosphorus, which is actually superior to 316SS. Hard ENP has excellent abrasion & corrosion resistance and is harder than 316. The superior smoothness of ENP compared to 316 also reduces torque & packing […]