ASC
300# Extra Heavy Galvanized Malleable Iron Cap
- Availability:
- Usually in Stock – Ships Quickly
- Weight:
- 0.00 LBS
Description
300# Extra Heavy Galvanized Malleable Iron Cap
300# extra heavy galvanized malleable iron caps close the end of a male NPT threaded pipe, pipe nipple, valve, or fitting. The female NPT connection provides a durable threaded closure for demanding commercial, industrial, mechanical, fire-protection, maintenance, and repair applications where corrosion resistance and a galvanized finish are required.
Select the required nominal pipe size from the product options above. The selected variation determines the ASC item number, online selling price, estimated weight, net cost, and other size-specific product information.
Product Highlights
- 300# / Class 300 extra heavy galvanized malleable iron construction
- Female NPT threaded connection
- Closes the end of a compatible male-threaded pipe or fitting
- Provides a removable threaded end closure
- Galvanized finish provides added corrosion resistance
- Designed for demanding threaded piping applications
- Manufactured to ASME B16.3 requirements
- Threads conform to ASME B1.20.1
- Malleable iron material conforms to ASTM A197
- UL Listed
- ASC Figure 3163
- Available in nominal pipe sizes from 1/4" through 3"
Technical Specifications
| Material | Galvanized Malleable Iron |
|---|---|
| Pressure Class | 300# / Class 300 / Extra Heavy |
| Connection | Female NPT |
| Fitting Type | Cap |
| Function | Threaded Pipe-End Closure |
| Thread Standard | ASME B1.20.1 |
| Dimensional Standard | ASME B16.3 |
| Material Standard | ASTM A197 |
| Finish | Galvanized |
| Listing | UL Listed |
| Manufacturer | ASC |
| Figure Number | 3163 |
| Available Sizes | 1/4" through 3" |
How a Threaded Cap Works
A threaded cap has one female NPT opening that threads over a compatible male-threaded pipe, pipe nipple, valve outlet, or fitting. Tightening the cap creates a removable closure at the end of the piping run while maintaining a compact threaded connection.
Common Applications
Commercial and Mechanical Systems
- Mechanical-room piping
- Water and utility piping
- Compressed-air systems
- Temporary or permanent line closures
- Equipment and valve outlets
- General repair and maintenance
Industrial and Fire-Protection Service
- Industrial process piping
- Fire-protection piping where approved
- Oil and petroleum piping
- Compatible gas service
- Approved steam service
- Galvanized piping installations
Product Resources
Review the ASC threaded fittings catalog for dimensions, weights, standards, and additional product information before installation.
Need Help Selecting a 300# Galvanized Malleable Iron Cap?
Our industrial PVF specialists can help confirm the required pipe size, pressure class, thread type, material compatibility, service conditions, and product availability.
Frequently Asked Questions
What is a 300# galvanized malleable iron cap used for?
It closes the end of a compatible male NPT threaded pipe, pipe nipple, valve, or fitting.
Does this cap have a female NPT connection?
Yes. ASC Figure 3163 has one female NPT threaded connection.
Can this cap be removed after installation?
Yes. It provides a removable threaded closure when installed with an appropriate thread sealant.
What is the benefit of the galvanized finish?
The galvanized finish provides added corrosion resistance compared with an unfinished black malleable iron fitting.
What pressure class is this fitting?
This fitting is manufactured as a 300# / Class 300 extra heavy threaded malleable iron fitting.
What sizes are available?
Available product variations range from 1/4" through 3" nominal pipe size.
What standards and listings apply?
The fitting conforms to ASME B16.3, ASTM A197, and ASME B1.20.1 requirements. ASC lists its Class 300 malleable iron fittings as UL Listed.
Should thread sealant be used during installation?
Use an approved pipe-thread sealant or thread tape selected for the piping media, pressure, temperature, applicable codes, and manufacturer recommendations.
Important Ordering Notes
- Select the required nominal pipe size before adding the product to your cart.
- This cap has one female NPT threaded connection.
- The selected variation determines the ASC item number, online selling price, estimated weight, and net cost.
- Confirm the nominal pipe size and thread type of the mating component before ordering.
- Confirm that a removable threaded cap is appropriate for the required piping closure.
- Confirm pressure, temperature, media compatibility, and application requirements before installation.
- Use an approved thread sealant suitable for the piping media and operating conditions.
- Avoid overtightening, which may damage the cap or mating threads.
- Depressurize and drain the piping system before removing an installed cap.
- Installation should be completed by qualified personnel and comply with applicable codes and standards.
