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Harris Model 31 Nitrogen-Purging Flowmeter

Save 29%
Original price $95.68
Current price $68.20
SKU 5400855
Currently 6 in stock.

Harris Model 31 Nitrogen-Purging Flowmeter

Model 31 compensated nitrogen purging flowmeter with 50 psig for brazing and back-purging applications (Vac Pac)

Model 31 flowmeter allows for the low controlled flow of nitrogen gas through the copper tube to prevent oxidation. Nitrogen purging prevents contamination. The flowmeter is compensated to 50 psig. It features a brass body, sensitive needle valve for fingertip control and durable, easy-to-read, flow tube and cover. It has 1/4" SAE flare inlet and outlet connections. Must mount the flowmeter vertically for accurate reading. Conveniently vacuum-packed for point-of-purchase display.

  • Light duty nitrogen flowmeter
  • Brass body construction
  • Easy-to-read flow tube with clear cover
  • 1/4" SAE flare inlet/outlet connections
  • Vertical mounting required
  • Used for brazing and back purging applications



Body: Brass
Compensated PSIG: 50
Duty: Light
Flow Capacity (SCFH): 0-70
Gas / Gas Service: Nitrogen (N2)
Inlet Connection: 1/4" - SAE Female Flare
Maximum Inlet Pressure (PSIG): 100
Outlet Connection: 1/4" - SAE Male Flare