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New underwater chemical injection valve

The new Roxar subsea chemical injection valve (high flow) promises total control over the injection of hydrate inhibitors.

The valve provides operators with control over the flow and chemical dosage rates of hydrate inhibitors, such as monoethylene glycol.

Features include:

• Operation at pressure of as much as 10,000 psi and depth as deep as 3,000 m. It is qualified to operate within a contaminating fluid environment, such as sand particles, without any need for subsea filtration. It also has no moving parts, except when adjusting flow rates, resulting in a longer life cycle. The valve can be retrieved by a remotely operated underwater vehicle without requiring special tools and will stay in position and continue to provide a constant injection rate. This gives the operator time to prepare for interventions without interrupting production. The injection valve has no choke points that can lead to clogging.

• Flow measurement accuracy at constant viscosity and temperature of better than ±5% and better than ±1% with the turbine meter version.

• Light weight (less than 60 kg in water and 150 kg in total weight), low power consumption, and uses standard communication protocols.

Source: Emerson Process Management, Box 4100, St. Louis, MO 63136.

Radio control system upgraded

The redesigned eco radio control system with expanded functionality can be used for controlling cranes and other machinery.