Change Threads From 4" NPT Pipe To 4.5" NST (NH) Fire Hose Hex
Simply screw it on, and you're ready to go.
- The NPT side of adapter can hook into IPT, NPT, ,NPSH, and PVC threads.
- The NST (NH) side of the adapter will allow you to connect the female end of your fire hose.
- 4" NPT Male x 4.5" NST (NH) Male
- Full Brass
- NPT - National Pipe Tapered
- NST (NH) - National Standard Thread (National Hose)
More About Double Male Adapters
A pipe fitting adapter is used to connect straight pipe or hose sections, to adapt to different sizes or shapes, and for other purposes.
Pipe nipple is a length of straight pipe with male threads on both ends. It is one of the most popular category of pipe & hose fittings. It is a connector or a coupling threaded on both ends. Pipe nipples are used to allow items with different threads to be connected together. They are used to fit straight / tapered end hose or pipes. A combination of pipe nipples are recommended for low-pressure discharge and suction service for various compatible liquids and not for compressible products like air, nitrogen or steam.
A coupling (or coupler) (used in piping or plumbing) is a very short length of pipe or tube, with a socket at one or both ends that allows two pipes or tubes to be joined, welded (steel), brazed or soldered (copper, brass etc.) together.
Alternatively if a short length of pipe with two female National pipe threads (NPT) (in North American terms, a coupler is a double female while a nipple is double male) or two male or female.
If the two ends of a coupling are different (e.g. one NST/NH threaded and one NPT threaded), then it is usually referred to as an adapter.
A pipe coupling is any fitting or device used to join two or more pipes in such a way that continuity is maintained between them. The body of a pipe coupling is typically made of the same or similar materials as those used to construct the pipes it joins. They may be rigid or flexible depending on the amount of movement the pipe is subjected to and may per permanent or removable fixtures. A pipe coupling can be stepped or reduced in internal diameter to accept pipes of different sizes, be T or cross shaped to join more than two pipes, or angled to form bends. Pipe couplings may also include peripheral features or equipment such as inspection openings, flow meters, or valves.
We 100% guarantee our brass adapters. If you are unhappy with your purchase you can return it within 30 days NO QUESTIONS ASKED! If you have any questions, give us a call at +1(510)237-5000.
All products are shipped within 24 hours of ordering Monday-Friday unless otherwise specified on the individual product description page. Your tracking number will be sent via email. Your item will ship from one of our three warehouses (California, Ohio, New York) depending on your location. Most orders ship with USPS Air Priority, UPS Ground, or FedEx Ground. Most items ship free. Used items may have additional shipping & handling charges. If you need express shipping, please call us 1 (510) 214-3093 and ask us for help.
Returns on most new and unused items are accepted within 30 days of purchase for unless otherwise posted as "Special Order Items or Custom Items or Used Item" in the product description. Buyer pays shipping for returns. 15% restocking fee is applied to all returns. Please ship your items to Fire Hose Supply -ATTN: Returns, 437 Ohio Ave, Richmond, CA, 94804.
✔️ Special Order & International Order Items
Special order & international order items cannot be cancelled or returned. Please make sure you are 100% sure of the product specifications you are ordering. If you don't fully understand the products you are ordering, please ask us for help to confirm the correct specifications you're looking for. Special order items are usually non-standard parts or bulk orders that are custom made directly from the factory.