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Siphon Tubes – Empex Stainless
Empex Stainless offers premium-quality Siphon Tubes designed to protect pressure instruments, gauges, switches, and transmitters from the damaging effects of high-temperature process fluids and vapours. These siphon tubes are widely used in instrumentation systems where pressure measuring devices are directly exposed to steam or other hot process media.
Empex Stainless Siphon Tubes help reduce the temperature of steam or process fluid before it enters the instrument, preventing direct contact with excessive heat and extending the service life of sensitive pressure instruments. Manufactured under strict quality control standards, our siphon tubes ensure reliable performance, durability, and safe operation in demanding industrial environments.
Siphon Tubes – Variety, Customization & Applications | Empex Stainless
Empex Stainless offers a wide range of Siphon Tubes in multiple configurations to meet diverse industrial and instrumentation requirements. Our siphons are available with various end connection options such as NPT, BSP, Butt Weld, Flanged, Socket Weld, and Compression outlets, allowing easy integration into different pressure measurement systems.
Types of Siphon Tubes
- U-Type Siphons – Suitable for vertical pipe mounting
- Coil / Pigtail Siphons – Suitable for horizontal pipe mounting
Siphons can be selected based on either Pipe Schedule or Pressure Rating, depending on the application requirement.
Available Pipe Schedule Options
- SCH 40
- SCH 80
- SCH 160
- SCH XXS
Available Pressure Ratings
- 3000 PSI
- 6000 PSI
- 10000 PSI
Common Size Options
- 3/8″
- 1/2″
- 3/4″
- 1″
Customization Options
At Empex Stainless, we provide fully customizable Siphon Tubes to suit specific operating conditions and installation needs. Customers can customize the following parameters:
- Different coil diameters
- Different coil lengths
- Different end connections
- Option for multiple coils in a single siphon
Material Options
Empex Stainless Siphon Tubes are available in a wide range of materials, including:
- Stainless Steel
- Brass
- Carbon Steel
- Monel
- Hastelloy C
- Incoloy
- Inconel 600
Applications of Siphon Tubes
Empex Stainless Siphon Tubes are widely used in pressure instrumentation systems for:
- Protecting pressure gauges, switches, and transmitters from pulsations in the process media
- Preventing damage caused by excessive heat from steam, fluids, gases, and vapours
- Acting as a cooling element for process media before it reaches the pressure measuring instrument
- Allowing direct mounting to the pressure connection of the instrument or to a shut-off device such as a stopcock or valve installed underneath
Syphon U Type
Syphon U type M x M
Syphon U type M x M
Syphon U Type M x F
Syphon U Type Male X Female
| Part No | Size (Inlet) | Size (Outlet) | A | B |
| SY/U1/01 | 1/4″ NPT Male | 1/4″ NPT Male | 180 | 120 |
| SY/U1/02 | 3/8″ NPT Male | 3/8″ NPT Male | 190 | 130 |
| SY/U1/03 | 1/2″ NPT Male | 1/2″ NPT Male | 200 | 150 |
| SY/U1/04 | 3/4″ NPT Male | 3/4″ NPT Male | 200 | 150 |
| SY/U1/05 | 1/4″ NPT Male | 1/4″ NPT Female | 180 | 120 |
| SY/U1/06 | 3/8″ NPT Male | 3/8″ NPT Female | 190 | 130 |
| SY/U1/07 | 1/2″ NPT Male | 1/2″ NPT Female | 200 | 150 |
| SY/U1/08 | 3/4″ NPT Male | 3/4″ NPT Female | 200 | 150 |
U Type Umbrella Syphon
Syphon Umbrella Type Male x Male
Syphon U Type Umbrella Male X Male
Syphon U Type Umbrella Male X Female
| Part No | Size (Inlet) | Size (Outlet) | A | B |
| SY/U2/01 | 1/4″ NPT Male | 1/4″ NPT Male | 180 | 120 |
| SY/U2/02 | 3/8″ NPT Male | 3/8″ NPT Male | 190 | 130 |
| SY/U2/03 | 1/2″ NPT Male | 1/2″ NPT Male | 200 | 150 |
| SY/U2/04 | 3/4″ NPT Male | 3/4″ NPT Male | 200 | 150 |
| SY/U2/05 | 1/4″ NPT Male | 1/4″ NPT Female | 180 | 120 |
| SY/U2/06 | 3/8″ NPT Male | 3/8″ NPT Female | 190 | 130 |
| SY/U2/07 | 1/2″ NPT Male | 1/2″ NPT Female | 200 | 150 |
| SY/U2/08 | 3/4″ NPT Male | 3/4″ NPT Female | 200 | 150 |
Syphons 90 Degre Pigtail
Syphons 90 Degree Pigtail
Syphons 90 Degre Pigtail Male X Male
Syphons 90 Degre Pigtail Male X Female
| Part No | Size (Inlet) | Size (Outlet) | A | B |
| SY/Q1/01 | 1/4″ NPT Male | 1/4″ NPT Male | 180 | 120 |
| SY/Q1/02 | 3/8″ NPT Male | 3/8″ NPT Male | 190 | 130 |
| SY/Q1/03 | 1/2″ NPT Male | 1/2″ NPT Male | 200 | 150 |
| SY/Q1/04 | 3/4″ NPT Male | 3/4″ NPT Male | 200 | 150 |
| SY/Q1/05 | 1/4″ NPT Male | 1/4″ NPT Female | 180 | 120 |
| SY/Q1/06 | 3/8″ NPT Male | 3/8″ NPT Female | 190 | 130 |
| SY/Q1/07 | 1/2″ NPT Male | 1/2″ NPT Female | 200 | 150 |
| SY/Q1/08 | 3/4″ NPT Male | 3/4″ NPT Female | 200 | 150 |
Pig tail Syphon Q Type 180 degrees
Pig tail Syphon Q Type 180 degrees
Pig tail Syphon Q Type Male X Male
Pig tail Syphon Q Type 180° MxF
Pig tail Syphon Q Type M X F
| Part No | Size (Inlet) | Size (Outlet) | A | B |
| SY/Q2/01 | 1/4″ NPT Male | 1/4″ NPT Male | 180 | 120 |
| SY/Q2/02 | 3/8″ NPT Male | 3/8″ NPT Male | 190 | 130 |
| SY/Q2/03 | 1/2″ NPT Male | 1/2″ NPT Male | 200 | 150 |
| SY/Q2/04 | 3/4″ NPT Male | 3/4″ NPT Male | 200 | 150 |
| SY/Q2/05 | 1/4″ NPT Male | 1/4″ NPT Female | 180 | 120 |
| SY/Q2/06 | 3/8″ NPT Male | 3/8″ NPT Female | 190 | 130 |
| SY/Q2/07 | 1/2″ NPT Male | 1/2″ NPT Female | 200 | 150 |
| SY/Q2/08 | 3/4″ NPT Male | 3/4″ NPT Female | 200 | 150 |
Common Sizes of Siphon Tubes – Empex Stainless
Empex Stainless offers a wide range of SS 316 Siphon Tubes in standard configurations to suit various pressure instrumentation applications. Below are some of the commonly supplied sizes and types:
Common Size of U-Type Siphon
- Empex Stainless SS 316 Siphon, U-Type, 1/4″ NPTM x 1/4″ NPTM, SCH 40
Common Size of U-Type Umbrella Siphon
- Empex Stainless SS 316 Siphon, U-Type Umbrella, 1/4″ NPTM x 1/4″ NPTM, SCH 80
Common Size of 90° Pigtail Q-Type Siphon
- Empex Stainless SS 316 Siphon, 90° Q-Type, 1/2″ NPTM, SCH 80
Common Size of 180° Pigtail Q-Type Siphon
- Empex Stainless SS 316 Siphon, 180° Q-Type, 1/2″ NPTM x 1/2″ NPTF, SCH 80
These standard sizes are widely used in pressure gauge and instrumentation installations, and can also be customized as per application requirements in different materials, schedules, and end connections.