Product details
Weiss Pigtail Syphon | SY-14SS304 | 1/4″ NPT | 304 Stainless Steel
Product Description
The SY-14SS304 is a loop-style syphon, commonly referred to as a “pigtail” syphon due to its coiled shape. The “SY” stands for Syphon, the “14” denotes the 1/4″ NPT connection size, and “SS304” confirms the material is 304 Stainless Steel.
In steam applications across the UAE, this syphon is essential. Its primary function is to trap condensed water within the loop. This “water seal” prevents live, high-temperature steam from directly entering the pressure gauge’s internal Bourdon tube, which could otherwise lead to thermal expansion errors or permanent instrument failure. By using 304 Stainless Steel, this syphon offers superior resistance to oxidation and corrosion compared to standard iron or brass models, making it ideal for industrial steam headers and boiler rooms in Dubai and Abu Dhabi.
Key Features
- 304 Stainless Steel Construction: Provides excellent durability and resistance to rust, even in humid plant rooms or when used with treated boiler water.
- Thermal Protection: The loop design creates a condensation trap that allows the gauge to operate at ambient temperature while monitoring a high-heat system.
- High Pressure/Temperature Rating: Designed to handle the rigorous demands of industrial steam service where standard materials might fail.
- 1/4″ NPT Connections: Features male threads on one end and female (or male) on the other for easy installation between the process pipe and the pressure gauge.
- Vibration Dampening: The coiled shape also provides a minor degree of mechanical dampening for systems with slight pressure fluctuations.
Technical Specifications
| Specification | Details |
| Brand | Weiss Instruments |
| Model | SY-14SS304 |
| Material | 304 Stainless Steel |
| Type | Pigtail (Loop) Syphon |
| Connection Size | 1/4″ NPT |
| Max Working Pressure | Up to 500 PSI (at 200°C) |
| Application | Steam, Vapor, High-Temp Liquids |
| Standard | Schedule 40/80 Pipe Wall Thickness |
Frequently Asked Questions
- Q: When is it mandatory to use a syphon?
- A: A syphon is required for any pressure gauge installed on a steam line. Without it, the high temperature of the steam will damage the gauge’s internal soldering or cause inaccurate readings.
- Q: Why use 304 Stainless Steel instead of Brass?
- A: Stainless steel has a much higher pressure and temperature threshold than brass. It also prevents the “dezincification” and corrosion often seen in brass syphons used in aggressive steam environments.
- Q: How should it be installed?
- A: It should be filled with water before the gauge is attached. This ensures the “seal” is active from the moment the steam valve is opened.
