Carbon Steel Gauge Syphon | 1/4 in MNPT x 1/4 in MNPT is a schedule 80 carbon steel pressure-gauge syphon for compatible steam and high-temperature gauge-protection service. This listing is written as a technical Corbett Equipment catalog listing for dry-cleaning shops, commercial utility service, equipment maintenance, water treatment, refrigeration/HVACR service, pneumatic systems, steam/gauge service, and industrial maintenance where the installed component matches the specifications below.
Use this listing only after comparing the installed part, physical dimensions, connection style, material, operating conditions, and machine or system documentation.
Technical Specifications
Component type: pressure-gauge siphon / syphon / pigtail.
Material: steel.
Gauge case material reference: schedule 80 carbon steel.
Connection path: 1/4 in male x 1/4 in male NPT.
Connection size: 1/4 in.
Connection type: NPT.
Connection thread size: 1/4 in.
Tube length: 4-9/16 in.
Tube style: pigtail.
Construction: seamless.
Maximum internal pressure: 1,650 psi.
Pressure/temperature reference: 1,650 psi at 630 Degrees F.
Compatible process media: steam.
Application: steam installations and applications above 100 Degrees F.
Standards reference: CRN registered.
NSF certified: yes.
Corrosion resistance: not corrosion resistant.
Ordering check: verify thread orientation, installed clearance, pressure, temperature, media, code/service requirements, and gauge compatibility before ordering.
Related Parts & Compatibility Notes
Do not substitute for brass plumbing fittings, refrigeration adapters, or the pressure gauge itself.
Use only where the installed gauge assembly requires a 1/4 in NPT steel pigtail syphon for steam or high-temperature service.
Warnings & Restrictions
This steel syphon is not corrosion resistant; verify process media, environment, and corrosion exposure before installation.
Use qualified service personnel and confirm code, pressure, temperature, steam-service, and gauge-protection requirements before installation.
Machine Fitment & Industrial Use
Use for compatible steam and high-temperature pressure-gauge protection where the installed gauge connection and process conditions match the listed specifications.
For dry-cleaning equipment, verify against the actual machine, valve panel, boiler or water-treatment system, gauge assembly, filtration system, utility line, pneumatic circuit, refrigeration service port, or service hose before ordering. If the product is being used outside dry cleaning, confirm compatibility with the application and operating conditions before installation.
Installation & Ordering Verification
Compare the product photo, installed component, size, connection style, and service location before ordering.
Confirm pressure, flow, temperature, material, chemical exposure, media compatibility, clearance, and mounting for the actual system.
Use qualified service personnel when installing pressure, steam, refrigeration, water, electrical, pneumatic, or equipment-control components.
Send photos of the installed part, machine tag, and service location if fitment is uncertain.