Right Angle Series Port Sizes 1/8" thru 1/2"

Product Overview

The ROSS Controls is a family of inline right-angle pressure regulators covering port sizes from 1/8" to 1/2" with a maximum flow capacity of 55 scfm (1557 l/min). The right-angle body geometry routes supply air through a 90-degree turn, allowing the regulator to fit into tight plumbing configurations where a conventional inline body would require excessive straight-line clearance.

The Series is available with two port connection styles: threaded banjo fittings and push-to-connect tube fittings. Banjo models accept male NPT or G (BSPP) port connections on both the inlet and outlet. Push-to-connect models accept standard inch tubing (1/4" and 3/8") or metric tubing (4 mm through 10 mm) on the inlet and male NPT or G thread on the outlet, enabling rapid pneumatic circuit assembly without tools.

All Series regulators are self-relieving, automatically exhausting excess downstream pressure when the set point is reduced. Operating pressure ranges from 15 to 240 psig (1 to 17 bar) inlet with a regulated pressure range of 15 to 120 psig (1 to 8 bar). The metal bowl construction and -10 to 70 degrees C ambient temperature rating make the series suitable for demanding industrial environments.

The combination of right-angle geometry, multiple fitting styles, and broad port size coverage makes the series a compact solution for pressure regulation in pneumatic circuits where conventional straight-body regulators cannot be accommodated.

Key Engineering Features

• Right-Angle Body Geometry - 90-degree inlet-to-outlet routing reduces installed length in space-constrained pneumatic assemblies and panel-mounted systems.
• Self-Relieving Operation - Automatically vents downstream pressure when the set point is reduced, eliminating the need for a separate relief valve in most circuit configurations.
• Threaded Banjo Port Option - Allows direct pipe connection in both NPT and G (BSPP) thread forms on inlet and outlet, simplifying integration with existing threaded pneumatic plumbing.
• Push-to-Connect Fitting Option - Accepts inch tubing (1/4" and 3/8") or metric tubing (4 mm, 6 mm, 8 mm, 10 mm) on the inlet for tool-free installation and rapid circuit assembly.
• Maximum Flow 55 scfm (1557 l/min) - Higher flow capacity than the smaller-bodied 112 Bantam and 113 Miniature Series regulators, supporting actuators and circuits with greater air demand.
• Wide Inlet Pressure Range - Rated for inlet pressures from 15 to 240 psig (1 to 17 bar), covering standard shop air and higher-pressure supply systems.
• Metal Bowl Construction - Durable metal bowl withstands industrial environments with exposure to contaminants, oils, and mechanical impact better than polymer bowl alternatives.
• Locknut Adjustment - Pressure adjustment knob includes a locknut to secure the set point after commissioning, preventing inadvertent changes during machine operation.

Technical Specifications

General Specifications

Certifications & Compliance

Typical Applications & Industries

Automation and Robotics

• End-of-arm tooling on robotic assemblies where straight-body regulators cannot be installed due to restricted clearance around the tool mounting plate.
• Pneumatic circuit boards and manifold assemblies where right-angle geometry minimizes overall assembly footprint and reduces pneumatic plumbing complexity.
• Pick-and-place systems using push-to-connect tube fittings on the inlet for rapid tubing connection and disconnection during machine reconfiguration.
• Multi-axis robot wrist assemblies requiring compact regulated air supply to grippers, suction cups, or pneumatic actuators with minimal added envelope.

Packaging and Converting

• Form-fill-seal machines where regulators must fit within narrow machine frames between drive components and pneumatic actuators.
• Tube filling and capping equipment requiring regulated air at specific downstream pressures, with right-angle bodies routed along machine structural members.
• Labeling and printing equipment with push-to-connect tubing circuits providing regulated supply to low-force pneumatic actuators.

Medical and Analytical Equipment

• Pneumatic dosing and dispensing equipment where the small body envelope of the right-angle regulator suits compact medical device enclosures.
• Analytical instruments requiring regulated air at 15 to 120 psig where the right-angle format accommodates restricted enclosure geometry.
• Laboratory automation equipment using metric push-to-connect fittings for compatibility with European pneumatic circuit standards.

Semiconductor and Electronics

• Wafer handling and die bonding equipment where compact inline regulators with metric tube fittings integrate with European-standard pneumatic circuits.
• Circuit board assembly machines requiring precisely regulated air supply to actuators operating within tight panel enclosures.

General Industrial and Panel Mounting

• Electrical control panels with integrated pneumatic controls where the right-angle body routes piping parallel to the panel backplane.
• Pneumatic valve islands and manifold stations where inline regulators provide zone pressure regulation in a compact footprint.
• Machine tool coolant misting systems requiring regulated air supply in close proximity to spindle assemblies.

Ordering and Model Number Configuration

Related Products & Accessories

• 112 Bantam Series Pressure Regulators - Compact modular-mount regulators with port sizes 1/8" to 3/8", piston or diaphragm construction, flow to 23 scfm. https://www.rosscontrols.com/en/series/112-bantam-series
• 113 Miniature Series Pressure Regulators - Inline piston or diaphragm regulators with port sizes 1/8" and 1/4", flow to 40 scfm. https://www.rosscontrols.com/en/series/113-miniature-series
• 114 Mid-Size Series Pressure Regulators - Modular-mount piston regulators with port sizes 1/4" to 1/2", flow to 100 scfm. https://www.rosscontrols.com/en/series/114-mid-size-series
• ROSS FRL Filters - Particulate and coalescing filters for upstream air preparation compatible with the series. https://www.rosscontrols.com/en/categories/36-air-preparation-frls

Frequently Asked Questions (FAQ)

Q: What port sizes are available for the Right Angle Series?

A: The Right Angle Series is available in 1/8", 1/4", 3/8", and 1/2" port sizes in both NPT and G (BSPP) thread forms.

Q: What is the maximum flow capacity of the series?

A: The Right Angle Series has a maximum flow capacity of 55 scfm (1557 l/min), making it the highest-flow regulator in its body size class within the ROSS FRL line.

Q: What is the regulated pressure range?

A: The Series regulates downstream pressure from 15 to 120 psig (1 to 8 bar). Inlet supply pressure may range from 15 to 240 psig (1 to 17 bar).

Q: Is the series self-relieving?

A: Yes. All Right Angle Series regulators are self-relieving, automatically exhausting excess downstream pressure when the set point is reduced without requiring a separate relief valve.

Q: What connection styles are available?

A: Two connection styles are offered: threaded banjo fittings with male NPT or G (BSPP) port 2 threads, and push-to-connect fittings accepting inch tubing (1/4" and 3/8") or metric tubing (4 mm, 6 mm, 8 mm, 10 mm) at the inlet.

Q: What is the ambient temperature rating?

A: The Series is rated for ambient and media temperatures from 15 to 160 degrees F (-10 to 70 degrees C), suitable for most industrial environments including unheated facilities in cold climates.

Q: What material is the bowl made from?

A: The Right Angle Series uses a metal bowl, providing better resistance to impact, chemical exposure, and industrial contaminants compared to polycarbonate alternatives.

Q: Why would I select the right-angle body over a straight-body regulator?

A: The right-angle geometry routes supply air through a 90-degree turn, reducing the installed length required in the flow direction. This is particularly useful in panel-mounted assemblies, robotic end-of-arm tooling, and machine enclosures where straight clearance is unavailable.

Q: Can I use G (BSPP) thread fittings with the series?

A: Yes. Models prefixed with 'D' (e.g., D5214A2010) are configured with G (BSPP) threads at both ports. Push-to-connect models with G-thread outlets are similarly designated.

Q: What is the maximum inlet pressure?

A: The maximum inlet pressure is 240 psig (17 bar), which exceeds the capabilities of most other regulators in the standard ROSS FRL line and accommodates higher-pressure compressed air systems.

Q: Does the series include a pressure gauge?

A: The Right Angle Series is designed for inline installation with the adjustment accessible from the side. Pressure gauge ports or gauges may be available as accessories. Consult ROSS Controls for gauge options specific to the right-angle body configuration.

Q: How is the pressure set point locked after adjustment?

A: The pressure adjustment knob on the series includes a locknut. After setting the desired downstream pressure, tighten the locknut against the body to prevent the knob from rotating during machine operation.

Q: Are CAD models available for the series?

A: CAD model availability can be confirmed by visiting rosscontrols.com or contacting ROSS Controls at (800) 438-7677.

Q: What filtration level is required upstream of the series?

A: The Series is rated for filtered air. ROSS recommends appropriate upstream filtration to prevent particulate contamination of internal seating surfaces and extend regulator service life.

Installation & Maintenance Guidelines

• Install the Right Angle Series with the inlet (Port 1) connected to the supply side and the outlet (Port 2) connected to the downstream circuit. Do not reverse flow direction.
• For banjo models, tighten Port 1 and Port 2 connections to the maximum torque values listed in the model table. Over-tightening can crack the banjo body; use the listed values as a hard limit.
• For push-to-connect models, insert tubing fully until it stops before pressurizing. Verify tube engagement by pulling gently outward; the tube should not release without pressing the collet release.
• Apply thread sealant only to male port 2 threads. Keep sealant away from the first two threads to prevent contamination of internal valve passages.
• Set the outlet pressure before connecting downstream equipment by rotating the adjustment knob clockwise to increase pressure and counterclockwise to decrease.
• Tighten the locknut against the body after reaching the desired set point to secure the adjustment against vibration or inadvertent contact.
• Verify self-relieving operation by reducing the set point and confirming downstream pressure decreases promptly.
• Mount with the adjustment knob accessible for routine maintenance. The right-angle body can be oriented in any position that does not obstruct adjustment access.
• Ensure upstream air is filtered to at least 5-micron to protect internal seating surfaces from particulate damage.
• After initial pressurization, inspect all connections for leaks using an appropriate leak detection solution. Address any leaks before returning the system to service.
• Do not exceed the rated maximum inlet pressure of 240 psig (17 bar). Pressures above this limit may cause body damage or uncontrolled downstream pressure increase.
• In installations using metric push-to-connect tube fittings, verify that the metric tubing OD matches the fitting specification exactly. Mismatch in tube OD will prevent proper engagement and sealing.

Warranty & Global Support

ROSS Controls provides a one-year warranty on all products, covering defects in material and workmanship from date of purchase.

Technical support is available through ROSS Controls USA at (800) 438-7677 or by visiting rosscontrols.com.

For product configuration, dimensional drawings, catalog downloads, and installation documentation, visit the ROSS Controls product page at rosscontrols.com or contact ROSS Controls directly.

Download Catalog: https://www.rosscontrols.com/en/series/111-right-angle-series