4 Inch Compound Gauge, -15 to 300 psi, -30 to 700 ft.HD, 304 Stainless Steel with Brass Internals Blue Filter Pitot tubes have been used

Pitot tubes have been used in flow measurement for years

laser marked PVDF flat tape

Good sealing and fastening

Republic HRC Regenerative Blower Manual

Used CEE AP4 Legacy Auto Pumps (manf

4 Inch Compound Gauge, -15 to 300 psi, -30 to 700 ft.HD, 304 Stainless Steel with Brass Internals Blue Filter Pitot tubes have been usedMagStrainer 304 Stainless Steel 4 Inch Compound Gauge With Brass Internals Primary Range: 15 to 300 PSIG Secondary Range: 30 to 700 Ft. Hd Dial Size: 4 Inch Connection Type: Double Threaded Brass Connection, 1 2 Inch MNPT, 1 4 FNPT Connection Location: Bottom Body Material: 304 Stainless Steel Internals: Brass Dry gauge Accuracy: 1. 5% PRM Part # PGCNBTY1000257700HDPSI