Series 69 is an industry standard relief valve used for Liquid Relief Valves 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

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.
New (WR) wide range adjustable and available in 150 PSI increments. 

Liquid Relief Valve Model Choices:
69A - Brass/bronze valve with stainless steel springs
69B - Brass/bronze valve with stainless steel seating inserts, disk and springs
69C - Stainless steel body / disk with bronze bonnet, stainless steel springs

Wide Range:
Series 69 is now available with a wider adjustable range (as an option). Valves are set to the mid-level pressure (or as specified). Typical wide-range is 150 PSI increments. Note: Flow rates are not showing on flow charts and vary by set pressure points.

Liquid Relief Valve Usages:

Include liquid by-pass, regulation, continuous relief and overprotection. Used on pumping stations, tanks, hydraulics, fluid / piping lines, oil fields, gas lines and when Liquid Relief Valves are needed.

Liquid Relief Valve Features:

  • Field adjustable by simple removal of the hex-cap
  • Metal to metal precision lapped seating
  • Back pressure tested at factory
  • Ease of cleaning and maintenance with simple removal
  • Stainless steel springs
  • Single piece leak free bonnet

Liquid Relief Valve Options:

  • O-ring seating options (see charts)
  • Packed lift lever
  • BSPT connections
  • Low lead option
  • Viton embedded o-ring at hex cap
  • Wide range WR adjustable (150 PSI increments)
  • Stainless steel body, disk, and seating
  • Adjustable wheel handle
  • Female Inlet

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