ARO Low Pressure Material Regulator, Back Pressure, 651791-XXX-B Series

Low Pressure Material Regulator, Back Pressure
651791-XXX-B Series

Manufacturer: ARO / Ingersoll Rand

Part Number: 651791-XXX-B

Description: The ARO 651791-XXX-B Series Low Pressure Material Regulator is a back pressure regulator designed for industrial fluid-handling and recirculating material systems. It provides controlled back pressure within the material line to help maintain stable system pressure and consistent fluid circulation.

Available in multiple configurations, the 651791 Series can be selected with different pressure ranges, port sizes, ball sizes, and wetted-component materials to suit a variety of coating, dispensing, and fluid-transfer applications. Depending on the specific model, regulated pressure ranges are available from 20–60 PSI up to 0–800 PSI.

High-flow models utilize 3/8" NPTF ports with a 0.250" ball, while system-flow models are available with 1-1/4" NPTF ports and a 0.500" ball. Zinc and stainless-steel body configurations are available with various stainless-steel or tungsten-carbide seat and stem combinations.

The removable base/seat plug provides access to the valve seat and internal components for inspection, cleaning, and routine maintenance.

Features:

• Back pressure material regulator
• Designed for industrial fluid-handling and recirculating systems
• Helps maintain controlled system back pressure
• Available pressure ranges:
  • 20–60 PSI (1.4–4.1 bar)
  • 0–200 PSI (0–13.8 bar)
  • 0–800 PSI (0–55.2 bar)
• Maximum inlet pressure up to 800 PSI, depending on model
• High-flow 3/8" NPTF configurations available
• System-flow 1-1/4" NPTF configurations available
• Zinc and stainless-steel body options
• Stainless-steel and tungsten-carbide valve component options
• Operating temperature range: 0°F to 200°F (-18°C to 93°C)
• Serviceable valve seat and internal components
• Rebuild and diaphragm service kits available for maintenance

Exact pressure ratings, materials, ball sizes, and port configurations vary by model suffix. Refer to the specific 651791-XXX-B model configuration when selecting a regulator. If your configuration is unavailable, please contact us at (503) 545-3176

Literature:

• Manual