Aquatrol 69/55 Series
Series 69 is an industry standard liquid relief valve used for pressure relief and by-pass.
Engineered and designed for heavy duty, industrial and commercial usages. A single piece bonnet to eliminate leakage while allowing for simple cleaning. Easy removable sealed hex-cap to adjust pressure.
Series 69 Liquid Relief Valves are calibrated (set to pressure) based on a range of flow-rates (GPM) versus seat size and set pressure. Standard valve is set to pressure to achieve flow rate maximum and minimums within each set pressure range. See capacity chart for details.
Temperatures -60°F (-51°C) to 406°F (208°C), low reduced to -320°F (-196°C) with PTFE option, high increased to 425°F (218°C) with stainless option.
Series 55 are small compact non-code (liquid) water relief valves with a maximum pressure of 200 P.S.I.
Include liquid by-pass, regulation, continuous pressure relief and over-protection. Also used on pumping stations, tanks, hydraulics, fluid / piping lines, oil fields, gas lines where a Liquid or Water Relief Valve is needed.
- Field adjustable by simple removal of the hex-cap
- Metal to metal precision lapped seating
- Back pressure tested
- Ease of cleaning and maintenance with simple bonnet removal
- Stainless steel springs
- Single piece – 100% leak free bonnet
- Cryogenic compatible