Back-Pressure Regulator

The Back-Pressure Regulator, model CT-CMP-BPR, holds a set pressure at the outlet of a core holder or flow loop in single-phase and multiphase flow studies. It uses a gas dome to load the seat, so the regulating force follows the charged dome pressure. Three pressure classes are offered, rated up to 10,000, 15,000 and 20,000 psi, all for gas, liquid and supercritical fluids at temperatures up to 150 °C (300 °F). It is one of the components Coretest supplies for building and maintaining core flood and SCAL rigs.

How it works

The dome is charged with gas to the required back pressure. Process fluid passes the seat only while system pressure exceeds the dome pressure, and the seat closes as pressure falls, so the upstream side is held at the set value. Flow rates from 0.0001 to 50 cc/min are handled. The dome-loaded arrangement is specified for fast response to system pressure fluctuations, stable pressure control over the whole flow range, and control during multiphase flow.

The controlled variable is the dome-loaded set pressure. The measured variable is the regulated back pressure. Wetted parts are stainless steel or Hastelloy for corrosion and chemical resistance.

What is included

• Dome-loaded back-pressure regulator in the selected class: 10,000, 15,000 or 20,000 psi
• Wetted parts in stainless steel or Hastelloy
• Dome charging hardware and pressure indication: stated in the project datasheet

Specify for your project

• Pressure class and set-pressure range
• Fluids (gas, liquid or supercritical) and their corrosivity
• Flow rate range within 0.0001 to 50 cc/min
• Operating temperature, up to 150 °C
• Wetted material and seal selection
• Connection size and mounting in the rig

This description defines the product family. Guaranteed performance, included hardware, exclusions, interfaces and acceptance criteria are stated only in the project-specific technical proposal and approved datasheet.

Features

• Pressure ranges: up to 10,000 psi
• Wetted material: stainless steel or Hastelloy
• Temperature: up to 150°C (300 F)
• Flow rates: from 0.0001 to 50 cc/min Type of fluids: gas, liquid, supercritical fluids
• Pressure ranges: up to 15,000 psi
• Wetted material: stainless steel or Hastelloy
• Temperature: up to 150°C (300 F)
• Flow rates: from 0.0001 to 50 cc/min Type of fluids: gas, liquid, supercritical fluids
• Pressure ranges: up to 20,000 psi
• Wetted material: stainless steel or Hastelloy
• Temperature: up to 150°C (300 F)
• Flow rates: from 0.0001 to 50 cc/min Type of fluids: gas, liquid, supercritical fluids

Benefits

• Extremely fast response to system pressure fluctuations
• Stable pressure control over the entire flow range
• Accurate control even during multiphase flow
• Corrosion and chemical resistant