Pulse™ low-flow ultrasonic chemical injection metering valves (CIMVs) are designed for injection of low-dose inhibitors. They use an ultrasonic flowmeter and a precision needle valve in closed-loop control. The valves are retrievable by an ROV, whether mounted in a horizontal or vertical orientation.

Injection of chemicals such as wax, scale, and corrosion inhibitors and low-dosage hydrate inhibitors (LDHIs)

Obtain accurate measurement with debris-tolerant, nonintrusive flowmeter

The microbore, line-of-sight, ultrasonic flowmeter has no moving parts. Unlike a Venturi-type flowmeter, it is pressure independent and has a very low native pressure drop. It provides consistent accuracy and a very large turndown ratio (up to 2,400:1).

Precisely regulate flow

A precision needle valve regulates flow of the chemical through the system. The needle has an equal percentage flow curve, providing exceptional control over a very large flow range. It is operated by an electric actuator, which enables very fine system adjustment, controlled by feedback from the ultrasonic flowmeter via the onboard closed-loop control algorithm.

• ROV-retrievable, self-regulating metering valve
• Flow range 0.07 to 159 galUS/h [0.25 to 600 L/h]
• Proprietary, microbore, nonintrusive, line-of-sight, ultrasonic flowmeter
• Accuracy better than ±2% of reading for all flow rates >0.53 galUS/h [>2 L/h}
• Maximum working pressure 15,000 psi [1,034 bar]
• Maximum water depth 13,123 ft [4,000 m]
• Horizontal or vertical mounting on tree or manifold
• Controller Area Network (CAN bus), CiA^® 443, or Modbus^® communication 
• Redundant flow measurement system
• Onboard control and diagnostics