Charman Inc.
150# Galvanized Malleable Iron Coupling
- Availability:
- Usually in Stock – Ships Quickly
- Weight:
- 0.00 LBS
Description
150# Galvanized Malleable Iron Coupling
150# galvanized malleable iron couplings connect two equal-size male-threaded pipes, pipe nipples, valves, or compatible fittings in a straight line. The two female NPT openings provide a durable threaded connection for commercial, industrial, plumbing, maintenance, and repair applications where added corrosion resistance is desired.
Select the required nominal pipe size from the product options above. The selected variation determines the Charman item number, online selling price, weight, cost, and other size-specific product information.
Product Highlights
- 150# Class galvanized malleable iron construction
- Female NPT x female NPT threaded connections
- Designed to join two equal-size male-threaded components
- Straight-through full coupling configuration
- Galvanized finish provides added corrosion resistance
- Compatible with galvanized steel pipe and threaded pipe nipples
- Available in nominal pipe sizes from 1/8" through 6"
- Suitable for commercial, industrial, plumbing, maintenance, and repair applications
Technical Specifications
| Material | Galvanized Malleable Iron |
|---|---|
| Pressure Class | 150# / Class 150 |
| Connection | Female NPT x Female NPT |
| Connection Sizes | Two Equal-Size Connections |
| Configuration | Straight Full Coupling |
| Thread Standard | ASME B1.20.1 |
| Dimensional Standard | ANSI/ASME B16.3 |
| Finish | Galvanized |
| Fitting Type | Threaded Pipe Coupling |
| Manufacturer | Charman Manufacturing |
| Available Sizes | 1/8" through 6" |
How a Galvanized Coupling Works
Each female NPT end of the coupling threads onto a compatible male-threaded pipe, nipple, valve, or fitting. The coupling creates a straight connection between two equal-size components and is commonly used to extend a threaded pipe run or join two pipe nipples.
Common Applications
Plumbing and Mechanical Systems
- Extending threaded pipe runs
- Joining two pipe nipples
- Mechanical-room piping
- Galvanized steel pipe installations
- Water and utility piping
- General repair and maintenance
Industrial and Utility Service
- Industrial process piping
- Compressed-air systems
- Outdoor and damp-location piping
- Oil and petroleum piping
- Equipment and skid piping
- Approved low-pressure steam service
Product Resources
Review the Charman product catalog, galvanized malleable iron specifications, and manufacturer warranty information before installation.
Need Help Selecting a Galvanized Malleable Iron Coupling?
Our industrial PVF specialists can help confirm the required pipe size, pressure class, thread type, service conditions, material compatibility, application requirements, and product availability.
Frequently Asked Questions
What is a galvanized malleable iron coupling used for?
A threaded coupling joins two equal-size male-threaded pipes, pipe nipples, valves, or compatible fittings in a straight line.
Does this coupling have female threads on both ends?
Yes. Both ends have female NPT threads designed for compatible male-threaded components.
How is a coupling different from a union?
A coupling joins two threaded components but typically requires one component to rotate during assembly or disassembly. A union has a central nut that allows the piping connection to be separated without rotating the adjoining pipe.
What pressure class is this fitting?
This galvanized malleable iron coupling is manufactured as a 150# or Class 150 threaded fitting.
What sizes are available?
Available product variations range from 1/8" through 6" nominal pipe size. Select the required size from the product options above.
Can this coupling be used with galvanized steel pipe nipples?
Yes. It is designed for compatible male NPT-threaded galvanized steel pipe, pipe nipples, valves, and other approved threaded components.
Does the galvanized finish improve corrosion resistance?
Yes. The zinc-based galvanized finish provides additional corrosion resistance compared with an unfinished black fitting, although suitability still depends on the environment, piping media, temperature, and application requirements.
Can it be used for water, air, oil, gas, or steam?
It may be used in compatible water, compressed-air, oil, gas, steam, and general-service systems when the application remains within applicable pressure, temperature, media, code, and manufacturer requirements.
Should thread sealant be used?
Use an approved pipe-thread sealant or thread tape on both male NPT connections, 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.
- The selected variation determines the Charman item number, price, weight, and cost.
- This is an equal-size full coupling with two female NPT connections.
- Confirm the nominal size and thread type of both mating components before ordering.
- Use an approved thread sealant suitable for the piping media and operating conditions.
- Do not overtighten the coupling, as excessive force can damage the threads or fitting.
- Confirm pressure, temperature, media compatibility, corrosion exposure, and application requirements before installation.
- Support connected piping properly to avoid excessive mechanical stress on the coupling.
- Installation should be completed by qualified personnel and comply with applicable codes and standards.
- Manufacturer warranty coverage is subject to the terms, limitations, and exclusions in the linked warranty document.
