Dial Indicator - Low Pressure - P77-7003

Return Line Low Pressure Indicators

Series LP


The LP indicator red alert sleeve has a full 360° visibility. Mounted upstream of filter or directly on filter inlet side, the model LP requires no maintenance or calibration, and resists vibrations and shocks.



  • Standard Settings: LP-10-10 PSID (0.7 BAR) LP-20-20 PSID (1.4 BAR) LP-25-25 PSID (1.7 BAR)
  • Operating Temperature: -40° F (-40° C) to 200° F (93° C) continuous
  • Housing: Nickel plated cold rolled steel
  • Sight Dome: Transparent, high impact polycarbonate



Provides visual warning signal indicating:

  • Contaminated filter element
  • Low fluid temperature
  • High fluid viscosity
  • Impending opening of filter bypass valve

Model LD Low Pressure Dial Indicator


Utility gauge with color zones for optimal filter performance. Black steel case and bezel, copper alloy internals.



  • Connection: Center back mount LD-30 & LD-60 = 1/8″ NPT
  • Accuracy: 3-2-3% of span, ASME B40. 1 Grade B
  • Ambient Temp: -50° F to 160° F

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Why Maradyne Fluid Power?

Maradyne Fluid Power has produced the industries most reliable line of hydraulic system filters and products for half a century. A clean hydraulic system is a must for efficient and cost effective fluid power. Maradyne Fluid Power meets the demanding needs of today’s hydraulic systems; producing Filter Units and Strainers with Filtration from 3 to 262micron, Flow Ratings to 150 GPM, and Operating Pressures to 3000PSI. MPF also offers Vacuum, Pressure, and Differential Indicators to monitor the condition of your system.

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