The ‘Old Bag’ Pressure Gauge & Isolator

The ‘Old Bag’ Plastic Pressure Gauge & Isolator

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  • All Plastic (Gauge + Isolator) Filled
  • Heavy Duty Design; Simple to Install
  • Completely Corrosion Resistant
  • Designed to Act as Visual Pressure Alert for Bag/Filter Change-Out
  • Extra Large Colored Display
  • Reduces Pressure Surges caused by Water Hammer or Metering Pump Pulsations
  • Highest Accuracy in Industry 1.5%
  • Factory Pre-Filled Glycerin or Silicone No Filling Required
  • One-Piece Molded Design (No Assembly)
  • Suitable for Corrosive Media + Slurries

Product Description

The ‘Old Bag’ Pressure Gauge & Isolator


Dial Diameter Large 2½” (Big Numbers-Clear Markers)
Mounting Direct Mount, Bottom Connection FNPT ½”
Housing PVDF or Polypro – Viton or PTFE Diaphragm – One Piece Molded Design (No Assembly or Filling Required)
Lens Safety Glass
Dial Red & Black Scale White Background, dial arc 270°
Bourdon Tube-SS316 (Non Wetted)
Diaphragm (wetted part) – FPM (Standard)
Movement SS316 (Non Wetted)
Gauge Red, Yellow, Green Moveable Plastic Markers-Pressure Range Pointers Fitted on the Bezel
Connection 1/2″ FNPT
Filling Options: Glycerin or Silicon Filled
Accuracy ±1.5% F.S.
Operating temperature Max. Working Temp. PVDF-195 F, PP-170°F
Pressure Range Standard range 0-60 / 0-100 / 0-160 PSI (Second Scale: Bar) Other units available, e.g., bar, MPa, etc.

Old Bag Data Sheet

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