501566 STZ Pipe Union

Review STZ 1/4 Inch Black Pipe Union

The STZ 501566 1/4 inch pipe union is a versatile plumbing component designed to join two pipes of the same size with an external thread connection. This union is manufactured by STZ, a leading name in the plumbing industry, ensuring high-quality and durability.

The STZ 501566 union is made from brass, a material known for its superior corrosion resistance and strength. Brass is ideal for use in various plumbing applications, particularly those involving water and other corrosive substances. The brass body is threaded on both ends, allowing it to connect easily to other pipes or fittings.

One of the key features of this union is its leak-proof design. The union comes with a nylon seal that creates a tight seal between the pipes when they are screwed together, preventing any leaks or water loss. The nylon seal is also designed to be replaceable, extending the lifespan of the union and ensuring continued leak-free performance.

Another important feature of the STZ 501566 union is its ability to withstand high pressure. It is rated for a working pressure of 150 psi, making it suitable for use in a wide range of commercial and industrial plumbing applications. The union is also compatible with a variety of fluids, including water, steam, and various chemicals, making it a versatile addition to any plumbing system.

This union is also easy to install. It can be hand-tightened or torqued down using a wrench, depending on the specific application and required tightness. The external thread connection allows for quick and easy disassembly if needed for maintenance or repair.

In summary, the STZ 501566 1/4 inch pipe union is a high-quality, leak-proof, and versatile plumbing component designed for use in various applications where a tight, threaded connection is required. Its brass construction ensures durability and corrosion resistance, while its replaceable nylon seal ensures long-lasting leak-free performance. With a working pressure rating of 150 psi and compatibility with a range of fluids, this union is a valuable addition to any plumbing system.

STZ 501566 1/4 pipe union is a plumbing component used to join two pipes of the same size. Here are some potential pros and cons when considering buying this product:

1. Durability: This union is made of brass, a material known for its durability and resistance to corrosion, making it a suitable choice for long-term use in various plumbing applications.

2. Easy to Install: The 1/4 pipe union features a threaded connection that allows for easy installation and disassembly, making it a convenient option for both professionals and DIY homeowners.

3. Leak-Free: The union is designed with an O-ring seal that helps prevent leaks, ensuring a secure connection between the pipes.

4. Versatile: The 1/4 inch size is a common size used in various plumbing applications, making this union a versatile option for a wide range of projects.

1. Cost: Brass unions, such as the STZ 501566, tend to be more expensive than their plastic counterparts, which could be a potential drawback for those on a tight budget.

2. Requires Additional Tools: Installing this union may require additional tools, such as a pipe wrench or pipe thread tape, which could add to the overall cost and time of the project.

3. Threaded Connection: While the threaded connection allows for easy installation, it also makes the union more susceptible to potential leaks if not properly installed or if the threads become damaged.

In conclusion, the STZ 501566 1/4 pipe union offers durability, ease of installation, and leak-free performance, making it a suitable choice for various plumbing applications. However, its cost and the need for additional tools may be considered disadvantages. Ultimately, the decision to purchase this union will depend on the specific needs and budget of the individual or project.

Recommendation: If durability and leak-free performance are top priorities, and the budget allows for it, the STZ 501566 1/4 pipe union is a solid choice for plumbing applications. If cost is a concern, a plastic union may be a more affordable alternative, but keep in mind that it may not offer the same level of durability and performance as a brass union.

Details:

Use for above ground gas, LP and air applications. Pressure tested directly at the factory.: 1/4 in. Can also be used for DI pipe projects, preparation materials not included.

Our durable black iron fittings are pressure tested at the factory. Black pipe union - 501566: when selecting gas pipe for your home Stz and fittings are the way to go. Fittings, nipples, and pipe come in an array of sizes to meet your homes gas, air, LP needs. UPS threads for compatibility with other project materials such as lamp parts, valves, extra.

1/4, black union, brass/iron. Rated at maximum 300 psi 150 f or. Ul and FM listed. Not for use with potable drinking water.

specifications pipehosefit:

• brand: Stz
• mpn: 501566
• part type: Pipe

payments pipehosefit:

• wallet: paypal
• credit card: visa

general pipehosefit:

• category: Business & Industrial > Adapters > Pipe Hose > Threaded Fittings

offer pipehosefit:

• prices: $11.54–$63.27
• item condition:
  • New
  • Open box
• availability: in stock
• started: october 18, 2025
• sold #: 12
• options: ship-to-home

returns pipehosefit:

• time: 30 days
• paid by: buyer
• policy: returns accepted

shipping pipehosefit:

• type: fixed
• service: economy int'l postage
• class: economy
• transit: 10-16 days

seller pipehosefit:

• rating: 98.4%
• city: mountain top, pa
• # reviews: 13442