Stainless Steel Low Pressure Proportional Relief Valve, 1/2 in. MNPT x 1/2 in. FNPT
Part #: SS-RL4M8F8
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Specifications
Low Pressure Relief ValveObtain over-pressure protection for a variety of applications with Swagelok proportional relief valves with easy external set pressure adjustments. Log in or Register to view price ContactIf you have questions about this product, please contact your local authorized sales and service center. They can also tell you about supporting services to help you get the most out of your investment.
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. Warning: Do not mix/interchange Swagelok products or components not governed by industrial design standards, including Swagelok tube fitting end connections, with those of other manufacturers. 
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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.
Warning: Do not mix/interchange Swagelok products or components not governed by industrial design standards, including Swagelok tube fitting end connections, with those of other manufacturers.
Stainless Steel Low Pressure Proportional Relief Valve, 1/2 in. MNPT x 1/2 in. FNPT
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Catalogs
Low Pressure Relief Valve
Obtain over-pressure protection for a variety of applications with Swagelok proportional relief valves with easy external set pressure adjustments.
Features: Liquid or gas service; Set pressures from 10 to 6000 psig (0.68 to 413 bar); 1/4 and 1/2 in. and 6 to 12 mm end connections
Features: Step-by-step identification procedure for threads and end connections.
RL3 Series Externally Adjustable Relief Valves Maintenance Instructions; RL3 Series Externally Adjustable Relief Valves Manual Override Handle Conversion Instructions
This document specifies guidelines used by Swagelok® Company and its suppliers to ensure compliance with product cleanliness requirements as stated in ASTM G93 Level C. Application of the document is limited to wetted system components. This document must be used in conjunction with product catalogs, technical bulletins, and reports.
Valve sizing often is described by the nominal size of the end connections, but a more important measure is the flow that the valve can provide. And determining flow through a valve can be simple.
Adjusting the set pressure, manual override conversion, stem seal replacement, bonded disc replacement.
Procedure for installing Swagelok tube fittings in sizes over 1 inch or 25 mm.
Specifications
SS-RL4M8F8 — Stainless Steel Low Pressure Proportional Relief Valve, 1/2 in. MNPT x 1/2 in. FNPT
| Attribute | Value |
|---|---|
| Body Material | 316 Stainless Steel |
| Cleaning Process | Standard Cleaning and Packaging (SC-10) |
| Connection 1 Size | 1/2 in. |
| Connection 1 Type | Male NPT |
| Connection 2 Size | 1/2 in. |
| Connection 2 Type | Female NPT |
| Handle Style | No Handle |
| Room Temperature Pressure Rating | 225 PSIG @ 100°F /15.5 BAR @ 37°C5 |
| Seal Material | Fluorocarbon FKM |
| Service Class | Low Pressure |
| Testing | No Optional Testing |
| eClass (4.1) | 37010901 |
| eClass (5.1.4) | 37019901 |
| eClass (6.0) | 37010901 |
| eClass (6.1) | 37019901 |
| eClass (10.1) | 37019901 |
| UNSPSC (4.03) | 40141606 |
| UNSPSC (10.0) | 40141606 |
| UNSPSC (11.0501) | 40141606 |
| UNSPSC (13.0601) | 40141606 |
| UNSPSC (15.1) | 40141606 |
| UNSPSC (17.1001) | 40183109 |
Resources
Drawings
Two-dimensional renderings are available for this product. Download the CAD file.
Three-dimensional renderings are available for this product. Download the CAD file.
Sales drawings are available for this product. Download the files.
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Contact
If you have questions about this product, please contact your local authorized sales and service center. They can also tell you about supporting services to help you get the most out of your investment.