- Provide simple, reliable, over-pressure protection for a variety of general-industry applications
- Have easy external set pressure adjustment
High-Pressure Proportional Relief Valves (R3A Series and R4 Series)
- Multiple springs for a selection of set pressure ranges
- Valves available factory-set to a specified set pressure
- 1/4 in. and 6 and 8 mm end connections—R3A series
- 1/2 in. and 12 mm end connections—R4 series
Low-Pressure Proportional Relief Valves (RL3 Series and RL4 Series)
- One spring for the full set pressure range
- Valves available factory-set to a specified set pressure
- 1/4 in. and 6 and 8 mm end connections—RL3 series
- 1/2 in. and 12 mm end connections—RL4 series
Proportional Relief Valves (R3A,R4, RL3, and RL4 Series)
Options
| Seal Materials | Fluorocarbon FKM is standard. Buna N, ethylene propylene, and neoprene are available factory-installed or in replacement seal kits for field assembly. |
| Spring Kits | Replacement spring kits are available for all models |
| Manual Override Handles | A manual override handle opens the valve without changing the set pressure. Available factory-installed or in kits for field assembly. |
| Special Cleaning and Packaging | Swagelok Special Cleaning and Packaging (SC-11) to ensure compliance with product cleanliness requirements stated in ASTM G93 Level C. |
Proportional Safety-Relief Valve, High-Pressure (PRV Series)
Specifications
- Gas and liquid service
- All 316L stainless steel construction
- 1/4 through 1 in. NPT and ISO/BSP parallel thread end connections
- Certified to PED 2014/68/EU Category IV
- Five set spring pressure ranges
CAD Files and Sales Drawings
Choose from more than 1 million Swagelok CAD templates and sales drawings in multi-lingual formats CAD templates are available in a variety of 2D or 3D file formats. Sales drawings are available in .pdf format. Search based on product names or part numbers.
"Safe Product Selection:
The complete catalog contents must be reviewed to ensure that the system designer and user make a safe product selection. When selecting products, the total system design must be considered to ensure safe, trouble-free performance. Function, material compatibility, adequate ratings, proper installation, operation, and maintenance are the responsibilities of the system designer and user.
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