Parker’s HR Series of metering valves provide the highest degree of precision metering for moderate pressure applications. A choice of seven precision ground, tapered flat, non-rotating and non-rising valve stems enable repeatable metering at flow capacities as low as 0.0004 CV. With 15 stem turns, this valve offers the ultimate in precision flow control. This series also features shut-off capability not found in most metering valves. A wide variety of end connection sizes, and seal materials provide considerable application versatility. These compact, metering valves work up to 250 PSI (17 BAR) at all seal temperature ranges.

In addition, these valves are available in angle and inline body patterns to assist installation in complex tubing systems. The installer should note that these metering valves do not require a separate shut off valve basic metering valves. This unique metering valve offers bubble tight shut-off service.

Markets:
• Universities
• Research and Development
• Chemical Plants


Features/ Benefits:
• Bubble tight shut-off
• Special fine pitch thread with 15 turn resolution is isolated from contact with process fluids
• Non-rotating/non-rising valve stem design provides smooth, non-reversing flow characteristics
• Seven optional valve stem tapers
• Special orifice liner assures long life
• Panel or in-line mounting
• Angle or in-line patterns
• Brass or 316 SS forged body construction
• 100% function tested for actuation and shut-off

Applications:
• Injection Systems
• Test Panels
• Precision Monitoring Systems