Product details
Weiss Pigtail Syphon | ASY14S | 1/4″ NPT | Black Iron / Steel
Product Description
The ASY14S is a “pigtail” or loop-style syphon that acts as a thermal buffer between the process line and the pressure instrument. The “ASY” designation refers to the iron/steel construction, while the “14S” identifies the 1/4″ NPT connection size and the standard pigtail shape.
In the UAE’s mechanical sector, black iron syphons are the primary choice for standard steam service. The loop design allows steam to condense into water, which then sits in the bottom of the coil. This “water seal” prevents live, high-temperature steam from directly entering the pressure gauge. By keeping the steam away from the internal Bourdon tube, the ASY14S prevents thermal expansion errors and protects the gauge from permanent heat damage.
Key Features
- Rugged Black Iron Construction: Built to withstand the high pressures and temperatures typical of industrial steam headers and boiler plant rooms.
- Effective Condensation Trap: The pigtail loop creates a reliable water seal that keeps the pressure gauge operating at a safe ambient temperature.
- Cost-Effective Protection: Provides essential safety and longevity for pressure instruments at a lower price point than stainless steel alternatives.
- 1/4″ NPT Standard Connection: Features male threads for easy installation between the process pipe and the gauge or isolation valve.
- Vibration Dampening: The coiled steel structure helps dissipate minor mechanical vibrations, further protecting the gauge’s internal movement.
Technical Specifications
| Specification | Details |
| Brand | Weiss Instruments |
| Model | ASY14S |
| Material | Black Iron / Carbon Steel |
| Type | Pigtail (Loop) Syphon |
| Connection Size | 1/4″ NPT |
| Max Working Pressure | Up to 500 PSI |
| Max Temperature | Suitable for saturated steam applications |
| Application | Steam Headers, Boilers, Sterilizers |
Frequently Asked Questions
- Q: When should I use Iron (ASY14S) instead of Stainless Steel?
- A: Black iron is the industry standard for general steam heating and non-corrosive steam lines. If the steam is highly corrosive or the environment is extremely saline (near the coast), stainless steel (SY series) is preferred.
- Q: Does this syphon require maintenance?
- A: Generally no, but during initial installation, it should be filled with water to ensure the protection is active before the steam valve is opened.
- Q: Is this suitable for potable water?
- A: Iron syphons are intended for steam and non-potable vapor systems. For water applications, brass or stainless steel components are required.