Product Review: Stainless Steel Pressure Gauge with Removable Bayonet Ring

This article was last updated on August 20, 2025.

Whether you're monitoring hydrogen pressure, operating in high-vibration compressor systems, or designing for hygienic environments for sanitary food and beverage processing, reliable pressure measurement is essential to safety and process integrity. However, finding a pressure gauge that offers both durability and easy field serviceability can be difficult, especially in corrosive environments where access for instrument recalibration is critical. 

Ashcroft, a leading authority in pressure and temperature instrumentation, offers a solution designed to perform in challenging conditions and make field maintenance and OEM installations less challenging. 

Read this product review to learn about the Ashcroft® 8009S Pressure Gauge, an economical, all stainless-steel solution engineered to perform in challenging conditions. By the end of the article, you will know if this instrument is the right one for your needs.

A Pressure Gauge for Service Challenged  Environments

The Ashcroft® 8009S Pressure Gauge offers the proven reliability of the Ashcroft® 8008S Pressure Gauge and includes an added level of in-field serviceability that is not commonly found in an economical price class. Its removable bayonet ring allows for quick access to recalibrate or reset the pointer to zero, without disconnecting the gauge from the process. This unique design enhancement makes the 8009S especially valuable for field maintenance and OEM installations alike.

Here's a quick review of important features: 

• Removable Bayonet Ring
  Provides quick access to the dial and pointer for recalibration or inspection, reducing downtime in service-sensitive environments.
  
  
• All Stainless-Steel Construction
  Laser-welded 316 stainless steel Bourdon tube and wetted parts ensure media compatibility and corrosion resistance in a variety of applications, including pressurized ammonia, industrial gases, oil and natural gas, medical equipment and hydraulic systems.
  
  
• FlutterGuard™ Dampening
  Built into all dry gauge models to suppress pointer flutter under pulsating pressure conditions common in pumps, hydrogen fuel skids, and compressors.
  
  
• Helium Leak Integrity
  Tested to meet MSL Helium leak rate of 1×10-⁶ scc/s, a critical feature for hydrogen gas and CNG/LNG systems.
  
  
• Flexible Dial & Mounting Options
  Multiple dial sizes, case materials, mounting kits, and scale configurations (including dual scale and custom dials) support integration into OEM systems and control panels.
  
  
• Broad Pressure Range
  Spanning vacuum through 20,000 psi with accuracy up to ±1% of span (depending on configuration and range).
  
  
• Ingress Protection
  Rated IP66 / NEMA 4X to ensure protection from dust and water—suitable for outdoor or washdown use.
  
  
• Certifications and Global Approvals
  CE, RoHS, PED, R110. UL252A and NGV 3.1 compliance make the 8009S suitable for global use in hydrogen refueling and natural gas applications.
  
  

8009S Stainless-Steel Pressure Gauge Product Specifications
 

Stainless Steel Pressure Gauge Industries and Applications 

The Ashcroft® 8009S Stainless Steel Pressure Gauge with removable bayonet ring is used by customers in a wide range of industries and applications, including the following. 

• Hydrogen Fueling & H₂S Gas Handling
  All stainless-steel welding allows for use in hydrogen and fuel cell technologies.

• Compressed & Liquefied Natural Gas (CNG/LNG)
  R110 and NGV 3.1 approvals for high pressures up to 20,000 psi with compatible process fittings and helium-tested sealing.

• Food & Beverage Processing
  Stainless steel construction and safety glass options support washdown and sanitary conditions.

• Hydraulic Systems, Pumps & Compressors
  Compact, rugged build with vibration protection supports heavy-duty operation in mobile or industrial equipment.

• Irrigation & Agricultural Equipment
  NEMA 4X enclosure ensures weatherproof performance in field environments.

• Refrigeration & HVAC Systems
  Withstands wide temperature swings and fluctuating pressures for consistent readings

Ready to learn more?

While both the Ashcroft 8008S and 8009S Stainless Steel Pressure Gauges are excellent, cost-effective choices for challenging applications,  the 8009S stands out for field recalibration and long-term maintainability. The removable bayonet ring makes this product especially effective where dial access is required without breaking the pressure seal. For engineers and technicians who prioritize both performance and ease of maintenance, the 8009S offers a unique advantage at a competitive price point.

To view other options, check out the pressure gauge page on our website. For your reference, here are a few other product reviews that may interest you: 

• Product Review: HPS High-Purity Pressure Gauge with Reed Switch
• Product Review: 1209 XRA Pressure Gauge for Overpressure
• Product Review: 8008S Stainless Steel Pressure Gauge
• Product Review: T6500 Ultra-High-Pressure Gauge
  

You can also contact us anytime to speak to a product expert and get all your pressure gauge questions answered. In the meantime, download our guide to learn about pressure and temperature instruments for hydrogen systems.