Series 69 Safety Relief Valves
Field-adjustable liquid bypass and relief
Specifications
- Body Material: Brass, 316 SS Trim, or Low Lead
- Max Pressure: 300 psig
- Temperature Range: -60°F to 406°F
- Media: Liquid ONLY
- Connections: NPT, BSPT, BSPP
- Adjustment: Field adjustable
- Certifications: Non-code
Manufactured by Aquatrol • Authorized Distributor • American-Made
Overview
The Series 69 is a liquid-only relief valve designed for bypass, regulation, continuous relief, and overpressure protection in liquid systems. Field adjustable and non-code rated, it’s ideal for hydraulic systems, pumps, and liquid process equipment.
Available in brass, 316 stainless trim, and low-lead configurations to match your application requirements.
Commonly Specified Series 69 Configurations
Select one to review and confirm suitability for your application.
Lead time varies by configuration. Not sure which to choose? Use the configurator below.
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Frequently Asked Questions
Is Series 69 ASME certified?
Series 69 is a non-code relief valve designed for liquid bypass and relief applications. It's not ASME certified for pressure vessel protection.
Can I adjust the set pressure in the field?
Yes, Series 69 is field adjustable, allowing you to fine-tune the set pressure for your specific application requirements.
What's the capacity calculation method?
Series 69 uses a flow factor method: GPM = Flow Factor × √ΔP. Flow factors vary by orifice size and are published in the capacity tables.