Posts Tagged ‘Ballvalve’

Global Supply Line’s manufacturers and Australian Pipeline Valve can supply unique alternatives to conventional ball valves. The problem with conventional ball valves whether they be soft seated or metal seated is that their life is reduced by the fact that entrained particulates/debris are scrapped across the ball through the full 90º motion of the ball, this also significantly […]

Here is an introduction to Australian Pipeline Valve’s BVF100-QF Trunnion Ball Valve product line. Design In conjunction with the European designer and patent holder, the proven Extremely Low Torque (ELT) ball valve is available as a simple option on APV valves. This design breaks the traditional ratio between the valve sealing force and the resulting […]

The issue of the sealant injection facility on trunnion mounted ball valves with soft seat inserts is highly contentious. Over the years I’ve heard every argument ranging from people who say you should not even have a sealant injection facility permitted for fear of operators randomly pumping grease into a valve as they would a […]

Double Ball/Plug DB&B valves With the need for verifiable and maintainable shut off in safety critical applications, double block and bleed valves have commonly been used for primary and secondary tight shut off, in an attempt to provide and ensure system integrity. Historically, system integrity would be achieved through the use of two individual isolation […]

Australian Pipeline Valve’s floating firesafe SLFSBV01 ball valve design has been further improved over the last 10 years. Features: – Heavy wall to API608 and ANSI B16 with high tensile heavy bolts (not Taiwan/ China style with hardware store bolts). Heavy T-Bar pole lever (100NB and above). Superior TFM1600 PTFE seats. (TFM1600 is a modified […]

Be careful with trunnion mounted ball valves 100mm (4”) and under and in reduced bore 150mm (6”) and under as many manufacturers cannot put a sealant injection directly onto each seat such as in the photo shown above (RHS). They can only fit a sealant injection to the middle of the body (photo LHS). Consequently […]

Many manufacturers and operators in the oil and gas industry have leakage problems with elastomer seals, especially when a drop in pressure takes place. This primarily occurs in sealings which create a barrier against gaseous media if highly pressurised gas falls to a very low pressure level within a very short period of time. The […]

Even if you’re ordering from a quality valve manufacturer, they often sub contract out special painting of the valves. Typical problems involve not taping up the stem area or indeed the bore area properly or the tape falling off. Sandblasting residue can ingress into the stem area or into the seat area. Initially this may […]

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