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Breco B-W3F3-S, 3/8" High-Pressure Threaded Hydraulic Plug x 3/8"-18 Female NPT, W Series, Steel

Breco B-6120-20, 1-1/4" Wing Nut Hydraulic Coupler x 1-1/4"-11.5 Female NPT, 6100 Series, Brass

by Breco
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$ 374.89
$ 374.89 - $ 374.89
$ 374.89
$ 299.89
$ 299.89 - $ 299.89
$ 299.89

Heavy-duty hydraulic connections that thread together and can be connected or disconnected under pressure. The Breco B-6120-20 is a brass 1-1/4" coupler from the 6100 Wing Nut Series — a double shut-off coupling that uses a threaded wing nut for a secure, high-pressure connection. Rated to 2750 PSI with 76 GPM flow.

Specifications

  • Brand: Breco
  • Series: 6100 (Wing Nut Hydraulic)
  • Part Number: B-6120-20
  • Description: Socket
  • Body: 1-1/4" Socket
  • Thread: 1-1/4"-11.5 Female NPT, NPTF
  • Type: Heavy-duty double shut-off, threaded wing-nut connection
  • Key Feature: Connect / disconnect UNDER pressure, minimal air inclusion and fluid loss
  • Construction: Brass body, zinc-plated steel wing nut, stainless steel springs
  • Seal: Buna-N
  • Max Working Pressure: 2750 PSI
  • Rated Flow: 76 GPM
  • Temperature Range: -40F to +250F
  • Quantity: 1pc
  • Origin: Made in USA

Why this coupler

  • Connect / disconnect under pressure — which means you can couple even with trapped line pressure, with minimal air inclusion and fluid loss.
  • Threaded wing-nut connection — which means a secure, high-pressure hold that resists vibration and accidental disconnect.
  • Double shut-off — which means both halves seal at disconnect to prevent fluid loss and contamination.
  • Brass body with stainless springs — which means corrosion resistance and reliable spring performance.

Frequently asked questions

What is a wing nut coupler?
A heavy-duty hydraulic coupling that threads together with a wing nut, allowing connection and disconnection even under pressure — common on high-pressure hydraulic lines.

What pressure is it rated for?
Rated to 2750 PSI (1-1/4"), per the 6100 Series ratings.

Can it connect under pressure?
Yes — that is the key feature: connect and disconnect under pressure with minimal air inclusion and fluid loss.

Ideal for high-pressure hydraulic lines that must connect under pressure. Pair this coupler with a matching 1-1/4" 6100 Series plug and wing nut.

Why buy from hpcouplers: Breco quality, responsive US-based support, accurate specs, fast shipping.