Syphons

Pressure gauge syphons for steam and hot-process installations, creating a condensate barrier that helps reduce temperature at the gauge.

4 products

U Style Syphons

From £13.00

304 Stainless Steel Ring Syphons

From £52.00

Brass Ring Syphons

From £43.00

316 Stainless Steel Syphons

From £52.95

Pressure gauge syphons

Pressure gauge syphons for steam and hot-process installations, creating a condensate barrier that helps reduce temperature at the gauge.

A correctly installed and primed syphon can reduce heat transfer from steam or hot media to the gauge. Confirm material, pressure, temperature, orientation and thread.

Return to Pressure Gauge Accessories or browse all pressure gauges.

Contact GNW if thread or application compatibility requires confirmation.

Gauge syphon selection

Pressure gauge syphons support a specific part of a pressure-gauge installation. A correctly installed and primed syphon can reduce heat transfer from steam or hot media to the gauge. Confirm material, pressure, temperature, orientation and thread.

Check the exact thread, size, material, pressure, temperature and medium compatibility shown on the product. Do not infer suitability from appearance or nominal size alone.

Follow the equipment manufacturer's installation instructions and the site's safe working procedure. Contact GNW where compatibility is uncertain.

Temperature protection

A correctly installed and primed syphon can reduce heat transfer from steam or hot media to the gauge. Confirm material, pressure, temperature, orientation and thread.

Installation formats

Match the accessory to the exact gauge, thread and installation arrangement.

BSP compatibility

Verify pressure, temperature, material and medium compatibility before installation.

Learn more

Typical applications

Use syphons where the installation needs the relevant mounting, protection, isolation or connection function. Confirm compatibility with the gauge and process before ordering.

Steam pressure indication

steam pressure gauges

Boiler plant maintenance

hot-process lines

OEM equipment builds

temperature protection at gauge connections

Process pipework installations

Used in plant pipework where gauge orientation, BSP connection compatibility and available installation space influence accessory selection.

How to choose

Select the right syphons by checking the pressure duty, performance, process compatibility and installation details.

Confirm gauge compatibility

Match dimensions, threads and the intended function to the pressure gauge or instrument.

Check the process connection

Confirm thread form, nominal size and male/female arrangement on both sides of the connection.

Review materials and media

Check body, seal and wetted materials against the process medium, temperature and cleaning conditions.

Check the installation space

Allow room for fitting, operation and maintenance without placing strain on the gauge connection.

Syphons FAQs

Answers to common questions about selecting and using syphons.

How do I choose the correct syphons?

Start with the gauge model, connection size and installation purpose, then confirm materials, pressure and temperature limits on the product page.

Are pressure-gauge accessories universal?

No. Threads, dimensions, materials and ratings vary, so compatibility must be checked for the specific gauge and process.

Can this accessory change measurement performance?

Some accessories can affect response time, temperature exposure or installation geometry. Select them for the process conditions and required response.

Where can I get selection help?

Contact GNW with the gauge model, pressure range, process medium, connection and operating temperature for product-specific guidance.