Ashcroft 1279 Duragauge Pressure Gauge

The Ashcroft 1279 Duragauge pressure gauge is the finest production gauge on the market for industrial use where precise indications are required. The Duragauge product line offers a wide variety of case styles, Bourdon tubes and pressure ranges to meet your application needs.

The Ashcroft 1279 Duragauge can be ordered with pressure ranges from vacuum to 30,000 psi with compound ranges available. The solid front case is made of phenolic resin for superior chemical resistance and fire safety and includes a blow-out back. It is field convertible to hermetically sealed or liquid filled style. Various socket and Bourdon tube materials are available. The Ashcroft 1279 Duragauge pressure gauge has a micrometer adjustable pointer and 400 series stainless steel construction of moving parts, which wear better, facilitating longer life. A teflon-coated pinion also facilitates longer life.

The Ashcroft 1279 Duragauge pressure gauge is part of the receiver gauge family. Ashcroft receiver gauges are used in conjunction with pneumatic transmitters to indicate pressure, temperature, flow, or other process parameters that can be transmitted by proportional variations in air pressure.

The Ashcroft 1279 Duragauge pressure gauge's PLUS! performance option provides liquid-filled performance in a dry gauge - fighting vibration and pulsations without liquid-filled headaches.

With the component combinations available in the Duragauge line, over ten million variations are possible to serve the needs of all types of industries, including process, power, nuclear, aerospace, and cryogenics.

Frequently Asked Questions

What is the Ashcroft 1279 Duragauge pressure gauge?

The Ashcroft 1279 Duragauge is a high-accuracy analog process pressure gauge designed for critical industrial pressure measurement applications where precise, repeatable readings and long service life are required. Its solid-front safety case, durable stainless steel movement, and configurable materials make it well suited for demanding process industries and OEM equipment.

What industries use the Ashcroft 1279 Duragauge?

The 1279 Duragauge is commonly used in refineries, chemical and petrochemical plants, offshore oil and gas facilities, power generation, water and wastewater treatment, mining and metals processing, cryogenic systems, turbines, compressors, and specialized OEM equipment. Its extensive configuration options allow it to be adapted to a wide variety of industrial pressure measurement applications.

What process media is the Ashcroft 1279 compatible with?

The 1279 is available with several Bourdon tube and socket material combinations, including phosphor bronze, 316L stainless steel, and Monel. This allows the gauge to be used with many compatible liquids and gases. Material compatibility should always be verified for the specific process fluid, operating temperature, and pressure before selecting a gauge, particularly when measuring corrosive chemicals or aggressive media.

When should I choose the Ashcroft 1279 instead of a digital pressure gauge?

Choose the Ashcroft 1279 when you need a rugged mechanical gauge that provides continuous pressure indication without requiring electrical power. It is ideal for process equipment, industrial machinery, and hazardous or remote locations where operators benefit from an always-visible analog indication. Digital gauges may be preferred when data logging, electronic outputs, or very high display resolution are required.

What pressure ranges are available?

The Ashcroft 1279 is available in vacuum, compound, and positive pressure ranges from vacuum up to 30,000 psi. Numerous pressure ranges allow users to select a gauge that provides the best readability and accuracy for their operating pressure.

What accuracy does the Ashcroft 1279 provide?

The 1279 provides an accuracy of ±0.5% of full scale, meeting ASME B40.100 Grade 2A requirements. This high level of accuracy makes it suitable for critical process measurements, calibration reference points, and applications where precise analog pressure indication is important.

What is the PLUS!™ Performance option?

Ashcroft's optional PLUS!™ Performance technology dampens the effects of vibration, pulsation, and mechanical shock without requiring a traditional liquid-filled case. It delivers the stability typically associated with liquid-filled gauges while avoiding issues such as fill fluid leakage, discoloration, temperature-related expansion, and maintenance associated with liquid-filled gauges.

Is the Ashcroft 1279 suitable for vibrating equipment?

Yes. The 1279 is frequently installed on pumps, compressors, turbines, and other rotating equipment where vibration can shorten gauge life or make readings difficult to interpret. When combined with the optional PLUS!™ Performance system or a liquid-filled configuration, the gauge provides improved pointer stability and longer operating life in vibrating environments.

Can the Ashcroft 1279 be used outdoors?

The standard dry-case gauge provides IP54 protection and is generally intended for weather-protected installations. For outdoor, washdown, or wet environments, the gauge is available in liquid-filled or hermetically sealed configurations that provide protection up to IP65 or IP66 (depending on the selected configuration), making them suitable for more demanding environmental conditions.

What safety features does the Ashcroft 1279 include?

The 1279 incorporates a solid-front safety case with a pressure-relief blow-out back to help direct pressure away from personnel in the unlikely event of Bourdon tube failure. The phenolic case provides excellent chemical resistance and fire safety, while the stainless steel movement, Teflon-coated pinion, and heavy-duty construction contribute to long service life in industrial environments.

Can the Ashcroft 1279 be used with diaphragm seals and accessories?

Yes. The 1279 is compatible with a wide variety of diaphragm seals, siphons, snubbers, mounting hardware, and accessory assemblies. These options allow the gauge to be adapted for corrosive media, high-temperature processes, pressure pulsation, and other challenging applications where additional protection or installation flexibility is required.