Pressure-Relief Valves
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Pressure-Relief Valves
Precision Pressure Management
Our line of Halkey-Roberts pressure-relief valves is engineered to protect equipment, enclosures, inflatable structures, and fluid systems from over-pressurization and vacuum-related damage. Our portfolio includes one-way pressure and vacuum relief valves, dual-action breather valves, high-flow relief valves, and push-open equalization valves. Designed for consistent cracking and reseating performance, these valves feature individually calibrated components, corrosion-resistant materials, and a broad range of pressure settings to support medical, aerospace, defense, transportation, marine, and industrial applications.
Dual-Action Breather Valves
Automatic Pressure and Vacuum Equalization
Our Halkey-Roberts line of dual-action breather valves automatically relieves both positive and negative pressure to help maintain pressure balance in sealed containers, enclosures, transport cases, and equipment. Engineered for reliable bidirectional operation, these valves provide controlled pressure relief and vacuum equalization across a wide range of medical, military, industrial, and transportation applications.
Features and Benefits
- Automatic pressure and vacuum relief
- Reliable bidirectional operation
- Available with manual override functionality
- Individually calibrated and tested
- Designed for consistent cracking and reseating performance
- Corrosion-resistant materials
- Reliable operation in any position
- Available for both lower- and higher-flow applications
Specifications and Technical Information
- Available pressure and vacuum settings from 0.05 psig to 5.0 psig
- Natural aluminum, black anodized aluminum, and chrome-plated aluminum options
- Standard and large-body configurations available
High-Flow Relief Valves
Rapid Pressure Relief for Inflatable Systems
High-flow relief valves are designed for applications requiring rapid pressure relief and high airflow capacity. Commonly used in inflatable boats, life rafts, life vests, evacuation slides, and other inflatable structures, this line of Halkey-Roberts valves provides precision relief across a wide range of pressure differentials while helping protect systems from over-pressurization. Available in aluminum and plastic constructions, and with or without flange mounting options, these valves are individually calibrated and tested to deliver reliable performance in demanding environments.
Features and Benefits
- High-flow performance
- Precision relief over a wide range of pressure differentials
- Designed for consistent cracking and reseating performance
- Individually calibrated and tested
- Compact and lightweight designs
Specifications and Technical Information
- Available relief pressures from 0.1 psi to 15.0 psi
- Aluminum, acetal, and polyurethane constructions available
- Standard and flange-mounted configurations available
Low-Pressure Relief Valves
Precision Relief at Low Pressure Settings
Low-pressure relief valves are engineered to provide accurate pressure protection in applications requiring relief at relatively low pressure thresholds. These Halkey-Roberts valves deliver dependable pressure relief while helping protect inflatable structures and other pressurized systems from over-pressurization. A large relief cap surface area supports accurate crack settings, while durable construction and an anti-obstruction design help ensure reliable operation, even when packed or folded prior to deployment.
Features and Benefits
- Precision low-pressure relief
- Large relief cap surface area for accurate crack settings
- Anti-obstruction design supports reliable operation
- Designed for consistent cracking and reseating performance
- Individually calibrated and tested
- Durable aluminum construction
- Suitable for inflatable and pressure-management applications
Specifications and Technical Information
- Available cracking pressures from 0.1 psi to 4.6 psi
- Natural aluminum construction
- Color-coded pressure identification available on select models
One-Way Pressure-Relief Valves
Reliable Over-Pressure Protection
The Halkey-Roberts line of one-way pressure-relief valves is designed to automatically vent excess pressure while maintaining a sealed system during normal operation. Used in medical equipment, aircraft electronics, radios, battery housings, and inflatable safety systems, these compact valves provide precise, automatic pressure or vacuum relief across a wide range of operating pressures. Individually calibrated and tested components, corrosion-resistant materials, and proven valve designs help ensure reliable cracking and reseating performance in demanding environments. Multiple mounting styles, pressure settings, finishes, and sealing options are available to accommodate a variety of application requirements.
Features and Benefits
- Automatic pressure relief
- Precision relief over a wide range of pressure differentials
- Designed for consistent cracking and reseating performance
- Individually calibrated and tested
- Compact and lightweight designs
- Corrosion-resistant materials
- Supports threaded and clamped installation methods
- Suitable for medical, aerospace, communications, and inflatable safety applications
Specifications and Technical Information
- Available relief pressures from 0.1 psi to 20.0 psi
- Natural aluminum, black aluminum, and stainless steel constructions available
- Available vacuum-relief configurations
- Available manual air-release configurations
- EMI/RFI-resistant coating options available on select models
Push-Open Valves
Manual Pressure Equalization
Halkey-Roberts push-open valves provide a simple and effective means of manually equalizing pressure in small containers, cases, and other sealed enclosures before opening. When depressed, the valve safely vents trapped air or gas through radial discharge ports, helping prevent sudden pressure release and improving access to protected equipment. Their compact design, airtight sealing performance, and corrosion-resistant construction make them well suited for aerospace, defense, transportation, medical, and industrial applications.
Features and Benefits
- Manual pressure equalization
- Simple push-to-open operation
- Controlled venting through radial discharge ports
- Compact and lightweight design
- Airtight sealing performance
- Corrosion-resistant construction
- Easy panel-mount installation
- 100% inspected prior to shipping
Specifications and Technical Information
- Temperature range from -65°F to 180°F (-54°C to 82°C)
- Available in clear anodized and EMI/RFI-coated finishes
- Easy installation through a single mounting hole
- DFARS and RoHS compliant
T-Style Pressure-Relief Valves
In-Line Protection for Medical Fluid Systems
T-style pressure-relief valves are designed by Halkey-Roberts to provide reliable in-line pressure protection in medical and fluid management systems. Available in Spin Lock and port-style configurations, these compact valves integrate directly into fluid or gas pathways to help protect balloon catheters, pump circuits, and other sensitive devices from over-pressurization. Select port-style configurations can be integrated directly into tubing assemblies, providing additional flexibility for system design and manufacturing. Multiple cracking pressure options support precise pressure control across a wide range of applications, while transparent polycarbonate construction allows for visual inspection of the flow path.
Features and Benefits
- In-line pressure relief for fluid and gas applications
- Helps protect balloon catheters, pump circuits, and sensitive equipment from over-pressurization
- Broad range of cracking pressure options available
- Compact design for easy system integration
- Transparent construction for flow path visibility
- Designed for consistent cracking and reseating performance
Specifications and Technical Information
- Available cracking pressures from 2.5 psi to 99.0 psi
- Clear polycarbonate construction
- Spin Lock and port-style configurations available
- Multiple pressure settings available to meet application requirements
Engineered for Safety and Performance
Our pressure-relief valves are built to the highest standards—trusted in critical systems where precision and reliability are essential.
Protecting Sensitive Equipment
Our Halkey-Roberts line of pressure-relief valves helps protect equipment, enclosures, inflatable systems, and fluid pathways from excessive pressure or vacuum conditions. Designed for reliable performance across medical, aerospace, defense, transportation, marine, and industrial applications, these valves provide consistent pressure management through a variety of pressure-relief, vacuum-relief, and dual-action configurations.
- Designed for consistent cracking and reseating performance
- Individually calibrated and tested on select valve families
- Compact and lightweight designs available
- Corrosion-resistant metal and polymer constructions
- Available in pressure-relief, vacuum-relief, and dual-action configurations
- Manual and automatic pressure-equalization options available
- Multiple mounting, installation, and integration styles available
- Broad range of pressure settings available for low-, medium-, and high-pressure applications
Technical Information
| Materials | Aluminum Stainless Steel Polycarbonate Acetal Polyurethane Other Engineered Materials |
| Configurations | One-Way Pressure Relief One-Way Vacuum Relief Dual-Action Pressure and Vacuum Relief Push-Open Equalization In-Line Pressure Relief |
| Pressure Ranges | Relief pressures from 0.1 psi to 99.0 psi, depending on valve family Pressure and vacuum settings available on select models |
| Construction Options | Standard and large-body designs Flange-mounted configurations Threaded and clamped installation options Spin Lock and port-style configurations |
Important: All HR Medical Components are shipped bulk, non-sterile, and are single patient use medical device components requiring further processing (e.g. assembly, packaging, sterilization) before clinical use. The buyer is responsible for determining effects of processing/multiple usage on these components, the appropriateness of the component in the final application, and pre/post sterilization shelf life.