We have set our goal on becoming a major player in the LNG markets, there is no doubt this segment will be seeing tremendous investment over the next 20 years to meet the energy demands.
MIR VALVE has a very good track record of ball valves in LNG, Regasification and Clean Gas plants and applications. We are going to build on this, pursuing global LNG projects and all connected plants that go with LNG (i.e. FLNG).
While the pandemic is still around us in 2021, there is no doubt the global Oil & Gas Industry is taking a turn for a bullish run in the years ahead; start planning now to catch the big ride!!!!
Stasi Prandalos, CEO
MV3-SS Side-Entry Subsea Ball Valves, FB RTJ
20" CL.300, 2-pc bolted body design (4 pcs)
2" CL.1500 (4 pcs)
MV4-SS DBB Subsea Ball Valves 3" CL.1500 (4 pcs)
Body: CS F60+ Inconel 625 Weld Overlay WO at Sealing Areas
Ball: CS F60+ Inconel 625 Weld Overlay WO + TCC
Seat: Inconel 625 + TCC, Stem: Inconel 718
Seal: IX metal ring + Lipseals+NBR
SR Seats, Metal-seated+TCC
c/w Subsea Gear
Qty: 12 pcs.
Material Certification 3.2
NDE Testing QL Level 1
API 6DSS Testing incl. of hydrostatic testing, gas testing
API 6DSSS hyperbaric testing at 10 bar ext. pressure
Customer: Esso (Thailand) Public Company (Exxonmobil Affiliate)
Location: Subsea Thailand, 22m depth
Project: Sriracha Subsea Project
Application: Subsea Plem, Crude Oil
We are pleased to share our first delivery of ball valves in FULL TITANIUM, 20” diameter, going to Callidus Process Solution, our exclusive rep in Australia for a Nickel Processing Plant in Philippines.
MV3 Side-Entry Ball Valves 20” CL. 150
Body/ Trim: Titanium B381, Metal-seated+TCC
Evolast N894 , SR Seats
Bare stem, to be fitted with customer actuator
Application: Hydrometallurgical Nickel Processing Plant
Location : Philippines
Customer : Callidus Process Solutions
End-User : Taganito Hpal Nickel Corporation (THPAL)
MV4 DBB Ball Valves
2" CL.300, FB, RF
Body: LTCS, Trim: SS, Metal-Seated+TCC
Fugitive Emission Testing
Application: Gas Metering Station
Project. : Gorgon LNG
Location : Onshore, Australia
Customer : Callidus Process Solutions
End-User : Chevron, Australia
Are Free Issued Pup Pieces and Advantage for Pipeline Ball Valve Manufacture? (PART 3)
Pressure Containment Differential
Valve buyers often include the requirement to pressure test the ball valve and the free issued pup piece as a single unit. What is sometimes overlooked is that valve is designed to contain a notably higher pressure and therefore is to be pressure tested to this higher pressure than what the free issued pup pieces can handle. The valve is designed to contain pressures based on their ANSI ratings. Line pipes (which free issued pup pieces are typically cut out of) are designed to contain the maximum pressure the pipeline system is expected to experience in its lifetime; this is always a lower figure than the ANSI rating of the valve. This creates a problem when the valve has to be pressure tested together with the welded on pup pieces: The valve has to be tested to 1.5 times its ANSI rated pressure to meet its API requirements for manufacture but the pup pieces is not designed to safely withstand that pressure.
Therefore what typically ends up happening is that in order to fulfill both API testing requirement and contractual requirements to the buyer, the manufacturer would have to hydrotest twice. Once with only the valve at the higher pressure to comply to API and again at the lower 1.5x pipeline design pressure after the pup pieces have been welded on. This is obviously not an insurmountable issue for the manufacturer but it does add an additional step to the valve's manufacture; one that could be avoided with a forged pup piece.
What can potentially happen is if this pressure threshold differential is not noticed by the manufacturer, it can result the inadvertent hydrotesting of the valve and pup assembly at the valve's full rated pressure. It is likely that the pup piece would not rupture during hydrotest but it can strain harden as the material is stressed beyond its yield strength. This although not detectable by the naked eye can compromise the longevity of the pup piece.
It is useful to bear in mind that a forged pup is costlier than pup pieces of equal NPS cut out of line pipe. It would then be useful for the valve buyer to consider if the additional cost of using forged pups would be outweighed by its benefits to arrive at an economically optimal solution.