Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

Image not available
ARMSTRONG INTERNATIONALThermostatic Cap & Disc Assemblies

ARMSTRONG INTERNATIONAL D517359 Steam Trap Cap and Disc Assembly

The ARMSTRONG INTERNATIONAL D517359 is a thermostatic cap and disc assembly, classified as a Steam Trap Cap and Disc. This repair part is compatible with the Armstrong D500173 model and the AI series. It is designed…

SKU 3G-OTH-70517

Also listed as: D 517359 · D-517359

Brand
ARMSTRONG INTERNATIONAL
Item
D517359 Steam Trap Cap and Disc Assembly
Category
Thermostatic Cap & Disc Assemblies
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

ARMSTRONG INTERNATIONAL
Manufacturer Part Number
D517359
Product Type
Steam Trap Cap and Disc
Compatible Series
AI
Compatible Manufacturer Model Number
D500173

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

ARMSTRONG INTERNATIONAL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The ARMSTRONG INTERNATIONAL D517359 is a thermostatic cap and disc assembly, classified as a Steam Trap Cap and Disc. This repair part is compatible with the Armstrong D500173 model and the AI series. It is designed for use as a replacement component in steam trap applications.

Frequently Asked Questions

What is the Armstrong D517359 steam trap cap and disc used for?

The Armstrong D517359 is a thermostatic cap and disc assembly used as a replacement repair part in steam trap systems. It is compatible with the Armstrong D500173 model and the AI series, helping maintain efficient condensate removal and steam conservation in industrial piping applications.

What are the specifications of the Armstrong D517359?

The Armstrong D517359 is a Steam Trap Cap and Disc, classified as a thermostatic cap and disc assembly. It is a repair part compatible with the Armstrong D500173 model and the AI series. The manufacturer part number is D517359, and it is produced by Armstrong International.

Where to buy the Armstrong D517359 worldwide?

The Armstrong D517359 is available to order through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this steam trap repair part.

How to install the Armstrong D517359 cap and disc assembly?

To install the Armstrong D517359, first isolate and depressurize the steam trap system. Remove the old cap and disc assembly, clean the mating surfaces, and install the new D517359 component. Tighten to manufacturer torque specifications and test for leaks before returning the system to service.

Used in

Common applications for ARMSTRONG INTERNATIONAL
Chemical processing — Armstrong International inverted-bucket steam traps (e.g., 882-050-125) for condensate removal from heat exchangers.
Food and beverage — Armstrong International corrosion-resistant steam traps (e.g., 1811-050-200) for steam tracing on sanitary lines.
Refining — Armstrong International high-pressure steam traps (e.g., 1822-100-650) for process steam mains.
Commercial HVAC — Armstrong International steam spargers (e.g., MS6-1-1/4") for hot water generation in boiler systems.
Pharmaceutical — Armstrong International stainless-steel steam traps (e.g., 1811-050-400) for clean steam applications.
Power generation — Armstrong International cast-iron steam traps (e.g., 883-075-250) for turbine drain lines.

ARMSTRONG INTERNATIONAL Products

3G Electric supplies ARMSTRONG INTERNATIONAL thermostatic cap & disc assemblies. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
ARMSTRONG INTERNATIONAL
ARMSTRONG INTERNATIONAL
This cap and disc assembly is a replacement component for steam traps, compatible with Series A traps. It is used to maintain proper condensate drainage and prevent steam loss in industrial steam systems
ARMSTRONG INTERNATIONAL
ARMSTRONG INTERNATIONAL
Thermostatic cap and disc assembly for use with ARMSTRONG INTERNATIONAL Series A steam traps. Designed as a replacement component for the D500867 model. Used in steam systems for condensate drainage and steam conservation
ARMSTRONG INTERNATIONAL
ARMSTRONG INTERNATIONAL
This thermostatic cap and disc assembly is a replacement part for Armstrong Series B steam traps, specifically for model D500655. It is used to restore proper condensate drainage and steam conservation in industrial steam systems
ARMSTRONG INTERNATIONAL
ARMSTRONG INTERNATIONAL
Thermostatic cap and disc assembly for steam traps. Compatible with Armstrong AI series and model D15766. Used as a replacement part to maintain condensate removal and steam conservation in industrial steam systems
ARMSTRONG INTERNATIONAL
ARMSTRONG INTERNATIONAL
Thermostatic cap and disc assembly for steam traps. Compatible with Armstrong BI series and model D503913. Used as a replacement internal component to restore steam trap function in steam systems
ARMSTRONG INTERNATIONAL
ARMSTRONG INTERNATIONAL
This cap and disc assembly is a replacement component for steam traps in the AI series, specifically compatible with model D1175-5. It is used to restore proper condensate drainage and steam conservation in steam systems

More from ARMSTRONG INTERNATIONAL

View all ARMSTRONG INTERNATIONAL parts
ARMSTRONG INTERNATIONAL
ARMSTRONG INTERNATIONAL
This steam trap cap and disc assembly is a repair part for the Armstrong D1175-7 model. It is compatible with Armstrong Series B steam traps. Used in steam systems to remove condensate and conserve steam
ARMSTRONG INTERNATIONAL
ARMSTRONG INTERNATIONAL
This thermostatic cap and disc assembly is a repair part for Armstrong Series B steam traps, including the 30B2 model. It replaces manufacturer model number D500765 and is used to restore proper condensate drainage and steam conservation in industrial steam systems
ARMSTRONG INTERNATIONAL
ARMSTRONG INTERNATIONAL
Thermostatic cap and disc assembly for steam traps. Compatible with Armstrong series A steam traps and model D500448. Used in industrial steam systems for condensate drainage and steam conservation
ARMSTRONG INTERNATIONAL
ARMSTRONG INTERNATIONAL
This cap and disc assembly is a replacement part for steam traps in the JD series, including model C6127. It is used to maintain proper condensate drainage and prevent steam loss in industrial heating and process systems
ARMSTRONG INTERNATIONAL
ARMSTRONG INTERNATIONAL
Thermostatic cap and disc assembly for steam traps. Compatible with Series A and model D500053. Used to replace cap and disc internals in steam traps for condensate drainage and steam conservation
ARMSTRONG INTERNATIONAL
ARMSTRONG INTERNATIONAL
This thermostatic cap and disc assembly is a replacement component for Armstrong Series B steam traps. It is compatible with model D1175-10 and is used to restore proper condensate drainage and steam conservation in industrial steam systems
ARMSTRONG INTERNATIONAL
ARMSTRONG INTERNATIONAL
Thermostatic cap and disc assembly for steam traps. Compatible with AI series and model D500622. Used as a replacement component in steam systems for condensate removal and steam conservation
ARMSTRONG INTERNATIONAL
ARMSTRONG INTERNATIONAL
Thermostatic cap and disc assembly for steam traps. Compatible with BI series and D1175-12 model. Used as a repair component to restore steam trap operation in condensate drainage systems