SPGTM-5 Vacuum Breaker Adapter 2-Pack - Convert Special Spigot Threads

In this review the SPGTM-5 Vacuum Breaker Adapter 2-pack is evaluated for gardeners and homeowners who need a reliable way to stop leaking external vacuum breakers and restore a normal garden hose connection. The biggest reason to buy is practical: it converts spigots with special vacuum breaker threads to a standard hose connection so you can attach a hose or irrigation timer without leaks. The reviewer found the adapters easy to install and appreciated that they are precision machined in the USA, which matters when dealing with corroded set screws or hard water wear.

Key Features

• Made in the USA: Machined domestically to precise tolerances, giving confidence in fit and durability for outdoor plumbing.
• Fits specific Arrowhead models: Designed to work with newer Arrowhead 255BFP and 355BFP spigots and the PK1390 stamped ABP 59 BFP bottom half, ensuring compatibility with these common units.
• Thread size match: Internal thread diameter of about 1.14-1.15 in and outer thread compatibility around 1.17-1.18 in makes it straightforward to match to your spigot threads.
• Easy installation: Removing the old vacuum breaker with two wrenches and screwing on the adapter is quick and typically takes only a couple of minutes.
• Stops leaks: Converts leaking external vacuum breakers into a normal hose connection that will not drip, especially useful with irrigation timers or always-on setups.
• Local support: The brand offers phone, email, or text guidance to help choose the correct model when customers are unsure.

Who It's For

The SPGTM-5 is best for homeowners, gardeners, and property maintenance workers dealing with frost-proof hose bibs or outdoor spigots that have leaking external vacuum breakers and special thread patterns. It is especially useful if a vacuum breaker set screw is corroded or broken and you prefer leaving the top of the vacuum breaker in place.

Those who should look elsewhere are users with spigots that do not match the listed thread diameters, or anyone requiring a universal multi-size solution; measuring the spigot threads before purchase is important because thread sizes vary and other SpigotMaster models cover different diameters.

Pros & Cons

Pros

• Prevents leaks by converting special vacuum breaker threads to a standard hose connection.
• High-quality, precision-machined parts made in the USA provide durable fit and finish.
• Quick and simple installation; most customers report it screws on in about 2 minutes.
• Good customer support for selecting the correct adapter model if uncertain.

Cons

• Price is higher than some simple fittings, and a few customers consider it a bit pricey for a small part.
• Fit depends on thread diameter; measure your spigot because some customers report mixed experiences with thread size compatibility.

Specifications

Product	SPGTM-5 Vacuum Breaker Adapter 2-pack
Fits	Arrowhead 255BFP, 355BFP and PK1390 stamped ABP 59 BFP bottom half
Outer thread diameter fit	Approximately 1.17-1.18 in
Internal thread diameter	Approximately 1.14-1.15 in
Use case	Convert external vacuum breaker to standard garden hose connection
Country of manufacture	Made in the USA

Our Verdict

The SPGTM-5 2-pack is a practical fix for anyone battling leaking external vacuum breakers who wants a reliable, standard hose connection. Its precise machining and clear fit dimensions make it a good value for the right spigot, and the ability to leave the top of the vacuum breaker on the spigot simplifies repairs. Measure your thread diameter and choose this model if it matches; otherwise select a different SpigotMaster size.

Frequently Asked Questions

Will this fit my hose bib?
Check your spigot threads; the SPGTM-5 fits spigots with outer threads near 1.17-1.18 in and internal threads about 1.14-1.15 in.

Can I leave the vacuum breaker top in place?
Yes, the adapter is designed to work when you leave the top of the vacuum breaker on and remove the bottom half if the set screw is stuck or broken.

Is installation difficult?
Installation is straightforward: support the spigot with one wrench, use another on the vacuum breaker to remove it, then screw the adapter on; many customers report it takes only a few minutes.