Product details
Weiss Right Angle Syphon | ASY12S | 1/2″ NPT | Black Iron / Steel
Product Description
The ASY12S is a specialized syphon designed to protect sensitive pressure instruments from the destructive heat of live steam. The “ASY” designation refers to the iron/steel construction, while the “12” denotes the 1/2″ NPT connection size. The “S” (or angle type) indicates its 90-degree shape.
In the UAE’s mechanical sector, this 1/2″ NPT syphon is the standard choice for main steam headers and larger boiler manifolds. Its primary function is to trap condensed water within the internal bend of the pipe. This “water seal” prevents superheated steam from directly entering the pressure gauge’s internal Bourdon tube. By ensuring the gauge operates at a safe ambient temperature, the ASY12S prevents thermal damage and guarantees accurate, long-term pressure monitoring in Dubai and Abu Dhabi plant rooms.
Key Features
- Space-Saving Right Angle Design: The 90-degree configuration is ideal for mounting gauges on horizontal pipes where vertical clearance is limited, or for side-mounting on vertical headers.
- Rugged Black Iron Construction: Provides maximum durability and high pressure/temperature resistance for industrial steam distribution systems.
- Effective Thermal Buffer: Creates a reliable water trap that isolates the gauge from the extreme temperatures of saturated or superheated steam.
- 1/2″ NPT Industrial Connection: A robust mounting size preferred for heavy-duty industrial piping and larger pressure instruments.
- Maintenance Prevention: Protects the delicate internal soldering and mechanical movements of the pressure gauge, significantly reducing instrument failure.
Technical Specifications
| Specification | Details |
| Brand | Weiss Instruments |
| Model | ASY12S |
| Material | Black Iron / Carbon Steel |
| Type | Right Angle (90-Degree) Syphon |
| Connection Size | 1/2″ NPT |
| Max Working Pressure | Up to 500 PSI |
| Max Temperature | Suitable for high-pressure industrial steam |
| Application | Steam Headers, Main Boiler Lines, District Heating |
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Frequently Asked Questions
- Q: When should I use a 1/2″ (ASY12S) instead of a 1/4″ syphon?
- A: The 1/2″ size is used for larger industrial steam pipes and headers. It provides a more robust physical connection and is required when the pressure gauge itself has a 1/2″ NPT thread.
- Q: Why choose an “Angle Type” over a “Pigtail” syphon?
- A: Angle syphons are used when you need to mount a gauge on a horizontal pipe and want the gauge to stand upright without the large vertical loop of a pigtail, which can be prone to mechanical damage in tight spaces.
- Q: Should I fill it with water before use?
- A: To ensure the pressure gauge is protected from the very first second the steam is turned on, the syphon should be “primed” with water to establish the water seal.