Ashcroft 45-1279RTS 04L-20000# Pressure Gauge

Ashcroft 45-1279RTS 04L-20000# Pressure Gauge is a 4.5-inch Duragauge process gauge designed for dependable local pressure indication in demanding industrial settings. The 1279 series delivers ±0.5% of span accuracy (ASME B40.100, Grade 2A) and this variant is configured for a 20,000 psi maximum range with a 04L configuration. It accepts common process connections, including 1/4" NPT and 1/2" NPT male, plus high-pressure 9/16-18 UNF-2B, with lower- or back-entry locations available for different installations. The solid-front case shields the dial and can be fitted with an acrylic window (glass window available as an option). Dampening options include liquid-fill or field-fillable configurations to resist vibration and pulsation, with PLUS! dampening available. Mounting supports stem, surface, flush, pipe, and remote configurations to suit panel or in-line installation. For weather protection, the dry version is not sealed, while liquid-filled or field-filled variants can achieve IP66 or NEMA 4X protection (S&P tube and socket) or NEMA 4 (A&R tube and socket), with hermetic sealing available in certain configurations. This model’s 04L-20000# designation identifies the 4.5-inch Duragauge 1279 with a 20,000 psi capacity, providing a precise, durable gauge suitable for process instrumentation where stable readings and long service life are essential.