Gauge Swivel Adapter Stainless Steel

The stainless steel instrumentation gauge swivel adapter (commonly classified as a pressure gauge union connector or calibration positioning fitting) is a specialized mechanical coupling engineered to facilitate the effortless installation and directional alignment of pressure measuring devices. Utilizing an independent, free-spinning male or female hex swivel nut alongside an embedded soft elastomeric or high-purity metallic sealing washer, this fitting allows the attached pressure gauge or electronic transmitter to be rotated 360 degrees for optimal dial visibility before final torque tightens the joint. This innovative structural layout entirely prevents traditional thread over-tightening or twisting stress on pipeline tubing, eliminating micro-leak pathways and speeding up regular instrument swap-outs in severe-service fluid processing lines.

Technical Specifications

• Fitting Design Configuration: High-Pressure Instrumentation Gauge Swivel Union Adapter

• Sealing Mechanism: Free-spinning swivel nut interface with specialized internal seat sealing washer

• Body Material Construction: High-grade Machined 316 Stainless Steel / 304 Stainless Steel (ASTM A479 bar stock)

• Swivel Nut Material: Heavy-duty forged or bar stock stainless steel matching the anti-corrosion grade

• Process Side Connection Thread: 1/2" NPT Male, 1/4" NPT Male, or customizable welded pipe stubs

• Instrument Side Connection Thread: 1/2" NPT/BSPP Female or 1/4" BSPP Female matching international gauge stems

• Sealing Ring/Gasket Compound: Premium Fluorocarbon FKM (Viton) / PTFE standard / Copper or 316SS washer optional

• Nominal Pressure Rating: Engineered to safely sustain up to 6000 psi (413 bar) under heavy operational stress

• Maximum Allowable Surge Pressure: Up to 10,000 psi (689 bar) matching heavy-wall pipeline system limitations

• Temperature Operational Range (FKM): -20°C to 200°C (-4°F to 392°F) delivering excellent thermal stability

• Temperature Operational Range (PTFE/Metal): -54°C to 450°C (-65°F to 842°F) for extreme high-temperature steam loops

• Orientation Capability: Supports full 360-degree rotational alignment during position layout anchoring

• Assembly Advantages: Provides full bubble-tight pressure isolation without inducing structural axis twisting or line torque

• Hex Nut Blueprint Geometry: Multi-faceted heavy-duty hex outer profile for effortless high-torque wrench grip

• Internal Thread Coating Profile: Fully passivated internal threads to eliminate structural thread galling or seizing

• Surface Coating Finish: Smooth, bright-annealed, and passivated outer body shell to resist chemical corrosion

• Applicable Equipment Profile: Dial pressure gauges, digital manometers, pressure transmitters, and chemical diaphragm seals

• Compatible Service Medium: Compressed process air, high-pressure hydraulic oil, natural gas, steam, and light chemicals

• Testing Guidelines Met: 100% pneumatic bubble-leak and hydrostatic proof verified to international instrumentation standards

• Traceability and Quality Control: Permanent laser-etched heat tracking number on the fitting hex flats with EN 10204 3.1 certification