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Low-Flow PULSE

Ultrasonic chemical injection metering valves

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Inject low-dose inhibitors effectively

The PULSE LF low-flow ultrasonic chemical injection metering valve (CIMV) is designed for injection of low-dose inhibitors (e.g., for wax, scale, corrosion) and uses an ultrasonic flowmeter and a precision needle valve in closed-loop or open-loop position control. It has been engineered to handle flow rates from 0.07 to 159 galUS/h [0.25 to 600 L/h] and it is retrievable by an ROV, whether mounted in a horizontal or vertical orientation.

Obtain accurate measurement with debris-tolerant, nonintrusive flowmeter

The PULSE LF CIMV uses a debris-tolerant, microbore, nonintrusive, line-of-sight ultrasonic flowmeter that has no moving parts. Unlike a Venturi type flowmeter, it is pressure independent and has a very low native pressure drop. The flowmeter provides consistent accuracy (better than 2%) and a very large turndown ratio (up to 2,400:1).

PULSE LF Low-Flow Ultrasonic Chemical Injection Metering Valve: Overview
PULSE LF CIMV: Overview
Insertion of low-flow PULSE CIMV subsea.

Precisely regulate flow

A precision needle valve regulates the 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 provides very fine system adjustment, controlled by the feedback from the ultrasonic flowmeter via the onboard closed-loop control algorithm.

Features

  • ROV-retrievable, self-regulating metering valve for injection of chemicals such as corrosion, scale, and wax inhibitors and low-dosage hydrate inhibitors (LDHIs)
  • Flow range 0.07 galUS/h to 159 galUS/h [0.25 L/h to 600 L/h]
  • Microbore, nonintrusive ultrasonic flowmeter
  • Accuracy better than ±2% of reading for all flow rates greater than 2 L/h
  • Maximum working pressure 10,000 psi [690 bar] and 15,000 psi [1,034 bar] 
  • Maximum water depth 13,123 ft [4,000 m] 
  • Insert weight 150 lbm [68 kg] in water 
  • Horizontal or vertical mounting on tree/manifold
  • CANbus, CiA443, or Modbus communication 
  • Redundant flow measurement system
  • Onboard control and diagnostics
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Brochure Subsea Valve Portfolio

Effective, reliable solutions for subsea pipeline, manifold, and production challenges.

Industry Article New Ultrasonic Flowmeter

Technology boosts critical accuracy of subsea, low-flow chemical injection.

Industry Article Increased Injection Accuracy from Ultrasonic Metering Valves

Subsea distributed injection method allows precise and accurate injection of chemicals to many individual wells at appropriate injection rates.

Industry Article Point of No Return—Injection Accuracy

The low-flow PULSE ultrasonic CIMV increases flowmeter accuracy and inhibitor dosage.

Brochure PULSE Ultrasonic Chemical Injection Metering Valves

Greater accuracy and reliability in low-dose inhibitor injection and hydrate mitigation.

Video Horizontal Intervention: Low-Flow PULSE Ultrasonic CIMV

Watch an ROV apply the PULSE CIMV subsea.

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