Service Metal
150# Galvanized Malleable Caps
- SKU:
- SGCP
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
150# Galvanized Malleable Iron Cap
150# Galvanized Malleable Iron Caps are designed to securely close the end of a male-threaded pipe, providing a dependable termination point for threaded piping systems.
Manufactured from durable malleable iron with a hot-dip galvanized finish, these Class 150 caps provide reliable strength and added corrosion resistance for industrial, commercial, plumbing, mechanical, water, and outdoor piping applications.
Product Highlights
- Threaded pipe cap for closing the end of a pipe run
- Female NPT threaded connection
- Designed for sealing and protecting male-threaded pipe ends
- Useful for permanent or temporary pipe termination
- Suitable for maintenance, testing, and future system expansion
- Hot-dip galvanized finish for added corrosion resistance
- Durable malleable iron construction
- Class 150 fitting
- Malleable castings conform to ASTM A197
- Hot-dipped galvanized fittings conform to ASTM A153
- Malleable fitting dimensions conform to ASME B16.3
- NPT threads conform to ASME B1.20.1
- Class 150 fittings are UL Listed and FM Approved at 300 PSI
- Galvanized fittings meet ANSI/NSF 61-4 Annex G and CA AB1953 (<0.25% lead)
- Manufactured in an ISO-certified facility
- Country of origin: Thailand & China
Technical Specifications
| Product Type | Pipe Cap |
|---|---|
| Material | Malleable Iron |
| Finish | Hot-Dip Galvanized |
| Pressure Class | 150# |
| Connection Type | Female NPT |
| Configuration | Threaded End Closure |
| Primary Function | Seal / Terminate Male-Threaded Pipe |
| Casting Standard | ASTM A197 |
| Galvanizing Standard | ASTM A153 |
| Dimensional Standard | ASME B16.3 |
| Thread Standard | ASME B1.20.1 |
| Listings / Approvals | UL Listed & FM Approved at 300 PSI |
| Lead / Potable Water Compliance | ANSI/NSF 61-4 Annex G and CA AB1953 (<0.25% lead) |
| Manufacturing | ISO-Certified Facility |
| Country of Origin | Thailand & China |
Construction & Applications
Malleable Iron Construction
Manufactured from malleable iron castings conforming to ASTM A197 for dependable strength and durability in threaded piping installations.
Threaded End Closure
The internal female NPT connection threads onto the end of compatible male-threaded pipe to create a secure piping termination.
Hot-Dip Galvanized Finish
The galvanized coating conforms to ASTM A153 and provides added protection against rust and corrosion in moisture-prone and outdoor environments.
Why Use a Galvanized Pipe Cap?
Secure Pipe Termination
A threaded cap provides a convenient way to close the end of a pipe run for system completion, maintenance, testing, isolation, or future expansion.
Added Corrosion Protection
The hot-dip galvanized finish makes the cap useful in piping systems exposed to moisture, weather, or other conditions where additional rust resistance is desired.
Typical Applications
Commercial & Mechanical Piping
- Commercial plumbing systems
- Mechanical piping
- Water distribution
- General utility piping
- Temporary line closures
- Future piping extensions
Galvanized Applications
- Outdoor piping
- Moist environments
- Water-service applications
- Industrial installations
- General galvanized piping systems
Ask Willy: Need Pipe Size Help?
Use our common pipe diameters and wall thickness chart to confirm sizing before ordering galvanized malleable iron fittings. You can also review the cap specification sheet and Certificate of Conformance below.
Standards & Approvals
ASTM Standards
Malleable iron castings conform to ASTM A197, while hot-dipped galvanized fittings conform to ASTM A153.
ASME Standards
Malleable fitting dimensions conform to ASME B16.3, while NPT threads conform to ASME B1.20.1.
UL, FM & Lead Compliance
Class 150 fittings are UL Listed and FM Approved at 300 PSI. Galvanized fittings meet ANSI/NSF 61-4 Annex G and CA AB1953 requirements listed in the supplied product information.
Related Malleable Iron Standards
- Malleable bushings, plugs, and locknuts conform to ASME B16.14.
- Malleable unions conform to ASME B16.39.
- Class 300 fittings are UL Listed according to the supplied product information.
- NPT threads on applicable fittings conform to ASME B1.20.1.
Need More Galvanized Malleable Iron Fittings?
Shop our complete selection of 150# galvanized malleable iron fittings, including caps, plugs, elbows, tees, couplings, bushings, unions, and other threaded fittings.
Frequently Asked Questions
What is a galvanized malleable iron cap used for?
A cap is used to close the end of a male-threaded pipe, providing a secure termination point for a piping system.
What type of connection does this cap use?
The fitting uses an internal female NPT threaded connection.
What is the difference between a pipe cap and a pipe plug?
A cap has female threads and installs over a male-threaded pipe end. A plug has male threads and installs into a female-threaded fitting or opening.
Can this cap be removed later?
Because it is threaded, the cap can generally be removed for maintenance, testing, or future system expansion when system conditions and installation practices permit.
Can a pipe cap be used for temporary system closure?
Yes. Threaded caps are commonly used for temporary closures during installation, maintenance, testing, or future expansion.
Why choose a galvanized cap?
The hot-dip galvanized finish provides added resistance to rust and corrosion in installations exposed to moisture or outdoor conditions.
What standard applies to the galvanized coating?
The supplied product information states that hot-dipped galvanized fittings conform to ASTM A153.
What thread standard applies?
NPT threads conform to ASME B1.20.1.
Is this fitting UL Listed and FM Approved?
The supplied product information states that Class 150 fittings are UL Listed and FM Approved at 300 PSI.
Does the supplied information include lead-compliance requirements?
Yes. It states that galvanized fittings meet ANSI/NSF 61-4 Annex G and CA AB1953 with less than 0.25% lead.
Important Ordering & Installation Notes
- Confirm the required nominal pipe size before ordering.
- This cap uses a female NPT connection and is designed for a compatible male-threaded pipe end.
- Do not confuse a cap with a plug; caps are female threaded while plugs are male threaded.
- NPT threads conform to ASME B1.20.1.
- Hot-dipped galvanized fittings conform to ASTM A153 according to the supplied product information.
- Use compatible galvanized pipe, fittings, thread sealant, and accepted threaded installation practices.
- Avoid damaging the galvanized coating during handling and installation.
- Depressurize and isolate piping before removing a threaded cap from an installed system.
- Verify system pressure, service, potable-water, code, and approval requirements before installation.
- Refer to the specification sheet and Certificate of Conformance for additional product information.
