Description
The PT Coupling W-Adapter is a Type W dust plug: an adapter-style plug that seals an open coupler when the line is disconnected, keeping dirt and moisture out and product in.
Key Features
- Made in the U.S.A. by PT Coupling
- Built to interchange with A-A-59326 cam and groove fittings in 3/4″ through 4″ and 6″; 1/2″, 5″ and 8″-12″ may not interchange across brands
- Stainless steel fittings are 316 stainless steel
- Security chains for dust plugs are available
Specifications
- Type: W (adapter dust plug)
- Materials (ptcoupling.com): Aluminum, Hard Coat Aluminum, Brass, Lead-Free Brass, 316 Stainless Steel, Ductile Iron, Carbon Steel, Polypropylene, Food Grade Polypropylene, Nylon, Hastelloy C®
- Sizes by material (ptcoupling.com): Aluminum 1/2″ to 12″; Hard Coat Aluminum 1/2″ to 6″; Brass 1/2″ to 6″; Lead-Free Brass 1″; 316 Stainless Steel 1/2″ to 10″; Ductile Iron 1/2″ to 8″; Carbon Steel 1″ to 4″; Polypropylene 3/4″ to 4″; Food Grade Polypropylene 3/4″ to 4″; Nylon 3/4″ to 3″; Hastelloy C® 1″ to 3″
- Max. working pressure (PT Coupling, metal cam & groove, under 100°F): 250 PSI for 1/2″–2″, 200 PSI for 2-1/2″–3″, 150 PSI for 4″, 75 PSI for 5″–6″, 50 PSI for 8″–12″. Ratings are reduced at higher temperatures. Contact Hockman-Lewis to confirm the rating for your size and operating temperature.
- Max. working pressure, polypropylene and nylon (PT Coupling): 100 PSI for 3/4″–2″, 50 PSI for 3″–4″
- Lead time: Many sizes are made to order. Contact Hockman-Lewis to confirm availability and lead time
Choosing a Material
- Aluminum: lightweight and economical with good abrasion resistance; for water, hydraulic oil, coolants, gasoline and petroleum products.
- Hard Coat Aluminum: lightweight with good abrasion, corrosion and chemical resistance; for sand and salt water, hydraulic oil, coolants, gasoline and petroleum products.
- Brass: good corrosion resistance at a lower cost than stainless and forms tight seals; ideal for water, and also used with hydraulic oil, coolants, gasoline and petroleum products.
- 316 Stainless Steel: excellent corrosion resistance and strength at high temperatures, and helps prevent product contamination; for salt water, waste water and many chemicals.
- Ductile Iron: excellent abrasion and wear resistance with good strength and toughness; for sand, grout, cement and other abrasives.
- Polypropylene: glass-fiber reinforced (black) with good abrasion, corrosion and chemical resistance; for water and coolants.
- Food Grade Polypropylene: white polypropylene for water and food-grade applications.
- Nylon: glass-fiber reinforced (green) with good abrasion, corrosion and chemical resistance; for water, coolants, gasoline and varnish.
- Hastelloy C®, Monel® and Carpenter 20®: for highly corrosive media such as hydrochloric and sulfuric acid.
PT Coupling does not recommend cam and groove fittings for compressed gas service, including air and steam.
Select only from the material and size combinations listed. Contact Hockman-Lewis to confirm availability and the PT Coupling item number for your application.





Reviews
There are no reviews yet.