Skip to content
Foster 66S-6, 3/4" Industrial Plug x 3/4" Male NPT, 6 Series, Free Swivel, Brass/Steel

Foster SL6206, 3/4" Industrial Coupler x 1/2" Female NPT, 6 Series, Automatic Sleeve Lock, Brass

by Foster
Save 20% Save 20%
$ 1,418.00
$ 1,418.00 - $ 1,418.00
$ 1,418.00
$ 1,135.00
$ 1,135.00 - $ 1,135.00
$ 1,135.00

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL6206 is a Brass 3/4" industrial coupler from the Foster 6 Series — a high-flow quick coupler that interchanges with any 3/4"-body industrial-interchange half (ISO 6150-B / ANSI T3.20.14). Built in the USA for demanding shop air, tools, and production lines.

Specifications

  • Brand: Foster
  • Series: 6
  • Part Number: SL6206
  • Interchange: 3/4" Industrial
  • Body: 3/4" Coupler
  • Thread: 1/2" Female NPT, FPT
  • Valve Type: One-Way Shut-Off
  • Material: Brass
  • Operation: Automatic, push-to-connect (insert the plug; no sleeve retraction to connect)
  • Working Pressure: 300 PSIG; vacuum to 27" Hg
  • Temperature Range: -40°F to +250°F
  • Seal: Buna-N (Nitrile)
  • Quantity: 1pc
  • Origin: Made in USA

Why this coupler

  • Automatic push-to-connect — which means single-handed connection with no sleeve retraction, for faster cycle times.
  • Sleeve Lock (SL) — which means the sleeve locks after connection to guard against accidental disconnect.
  • Brass construction — which means corrosion resistance and smooth, reliable operation.
  • One-Way Shut-Off — which means the socket seals the supply line the instant the plug is removed, holding pressure and preventing blow-down.

Snap it on and the connection just holds — full 3/4" flow, no drips, no hiss. Built to take daily shop abuse and keep sealing leak-free, connection after connection.

Frequently asked questions

What does this connect to?
It mates with any 3/4"-body industrial-interchange plug (ISO 6150-B / ANSI T3.20.14), the most common high-flow air-coupler standard in North America.

What pressure and temperature is it rated for?
300 PSIG working pressure (vacuum to 27" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.

Is this push-to-connect?
Yes — insert the plug and it connects automatically with no sleeve retraction. Sleeve Lock resists accidental disconnect.

Ideal for high-flow shop air lines, pneumatic tools, and production equipment. Pair this coupler with a matching 3/4" 6 Series plug for a complete, leak-free connection.

Why buy from hpcouplers: Foster quality (an Ideal Tridon Group brand), backed by responsive US-based support, accurate specs, and fast shipping. Quick-coupling is what we do.