Complete product portfolio
Our core portfolio in Latin America is dominated by our ball valve range however we deliver a wider product range designed to suit specific applications, service and operating conditions. The complete range is suitable for surface and subsea applications designed to the stringent API standards – 6A, 17D, 6D and 6D subsea. Options are available for the connection type including, flanged, butt weld, socket weld, hub connectors and compact flange.
Pressures are increasing and to meet our customer requirements we offer pressure ratings up to 16,500 psi. Often the high pressure projects are also characterised with higher temperatures HP/HT and so we offer valves which deliver superior performance up to 175 deg C. The portfolio has developed over a 50 year period engineered and manufactured from the integrated manufacturing facility in the UK.
- Through Conduit Gate valves
- Expanding and double expanding Gate valves
- Small bore valve range
- Needle Valves
- Small bore Gate Valves
- Rotary Disk Valves
- Piston Check Valves
- HIPPS valves
- Eccentric double isolation ball valves
Through Conduit Gate & Expanding Gate Valves
Selecting the right gate valve for an application depends on many factors – the process fluid – liquid, gas, corrosive or dirty; the operating temperature; pressure; working environment; duty and shut off performance.
Through conduit slab and expanding gate valves provide superior sealing characteristics to any other type of valve configuration making them the ideal choice for high integrity, zero leakage applications.
Through conduit slab gates depend on the flowline pressure to effect a seal whereas expanding and wedge gate valves are positive shut off valves that force the gate into the seats to effect a seal through increasing the torque and thrust.
The complete range of gate valves is suitable for surface and subsea applications designed to the stringent API standards – 6A, 17D and 6D. Options are available for the connection type including, flanged, butt weld, socket weld, hub connectors and compact flange.
Pressures are increasing and to meet our customer requirements we offer pressure ratings up to 16,500 psi. Often the high pressure projects are also characterised with higher temperatures HP/HT and so we offer valves which deliver superior performance up to 175 deg C.
All these valves have their sealing surfaces hard faced with Tungsten Carbide and can be configured with rising or non-rising stems on Hydraulic actuators. The full bore range from 1/2 to 42 inch are available in standard and exotic materials.
The global search for new Surface and Subsea Oil and Gas reserves means that Operators have to deal, increasingly, with High Temperature High Pressure scenarios.
In simple terms, Production Wells are rated by their shut-in pressures and, even though they do not flow at this rating, conventional practice dictates that the downstream equipment must be designed to tolerate a ‘fully-rated system’.
Typically, a well might be rated for 10,000psi but a HPHT well might be rated for upwards of 15000psi.
Fully rating these systems requires thick-walled pipelines and vessels that are expensive to procure and difficult to install, especially in deepwater.
The HIPPS installation is a Safety Instrumented System of Control (SIS).
It is a technological innovation that seeks to exploit the difference between the shut-in pressure and flow-pressure by permitting the flowline to be de-rated to conventional levels and protecting it from pressure excursions by sensing the upset conditions and shutting down the overall system quickly.
HIPPS is, therefore, an enabling technology that impacts the logistics, economics, safety and the environment, all of which contribute to the overall project viability by enhancing the flexibility and architecture.
HIPPS are the only systems which protect against over pressure scenarios and the loss of containment simultaneously, but the whole system must satisfy stringent Safety Integrity Levels (SILs).
The decision to include a HIPPS depends on multiple assessments to mitigate risk, but a first step is to find a supplier with an established reputation who can provide a fully integrated solution.
HIPPS systems need to meet stringent SIL requirements, and should not be simplified only to a Probability of Failure on Demand (PFD), because each installation has a unique set of calculations for Risk Assessment.
Eccentric double isolation ball valve
The untreated production stream from hydrocarbon wells contains sand, scale, water and often, corrosive compounds like hydrogen sulphide and carbon dioxide. These, together with the mixture of oil and gas flowing under high pressures, exert severe wear on the seat to ball interfaces of the downstream valves.
The Eccentric-Ball Valve is a patented single valve that provides excellent performance in these erosive conditions and provides full double block and bleed functionality in a single valve.