16-500 Series Bypass Relief Valves

Brand: Apollo Valves

Model 16-501

Adjustable relief valves protect equipment by providing low volume liquid relief or bypass control.

Excess volume may be discharged back to the low pressure source.

Ideal for agricultural sprayers and simple commercial or industrial pressurized systems.

Models 16-503 and 16-504

Calibrated pressure relief valve allows for in-line pressure adjustments without the need for a pressure gauge.

Provides static overpressure protection for liquid filled systems such as well pumps, tanks, fire protection systems.
Features
  • Model 16-501
    • Adjustable relief settings, in two ranges to 600 psi
    • Cast bronze body, stainless steel springs
    • Choice of Nitrile (Buna) or PTFE soft seats
    • Knurled locknut locks pressure adjustment
    • Viton stem seal, polypropylene body gasket
    • Maximum recommended service temperature 200°F
  • Models 16-503 and 16-504
    • Choice of ½"or ¾" inlet connection
    • Factory preset at 100 psi
    • Pressure range 50 to 175 psi, calibrated in 25 psi increments
    • Cast bronze body, stainless steel spring
    • Silicone soft seat, EPDM cap seal
    • Maximum recommended service temperature 200°F

Specifications

Material

  • ASTM B584 Bronze
  • Stainless Steel
  • Viton®
  • Nitrile or PTFE

Inlet Size

  • ½" (15 mm) Male x ½" (15 mm) Female
  • ¾" (20 mm) Male x ½" (15 mm) Female

Relief Range

  • 50 - 600 psi

Maximum Service Temperature

  • 200°F
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