Tel-Tru Instruments 4030SS2L1Z2A Pressure Gauge

The Tel-Tru Instruments 4030SS2L1Z2A is a 4 in. dial, Model 30 Stainless Steel Pressure Gauge built for industrial vacuum and positive‑pressure monitoring in demanding environments. It is commonly installed in vacuum pumps, HVAC systems, filtration equipment, compressors, pneumatic systems, chemical processing plants, and other process-control applications requiring accurate compound pressure measurement. Maintenance teams and system integrators rely on this gauge for equipment repair, instrument replacement, process upgrades, and restoration of reliable monitoring. Key specifications include a 304 stainless steel case; 316 stainless steel Bourdon tube, socket, and movement; laminated safety glass lens; heavy‑gauge aluminum dial; and a friction‑adjustable aluminum pointer. It features a 1/2 in NPT male lower‑mount connection, IP65 enclosure protection, and ASME B40.1 standard compliance, with a compound pressure range of −30 inHg to 0 to 30 psi and an accuracy of ±1% full scale (ANSI Grade 1A).