RS PRO Brass Pneumatic Quick Connect Coupling Female, Male 4mm Single Shut Off (One Side Is with Valve)

Bulk discount available

Subtotal (1 pack of 5 units)*

£12.04

(exc. VAT)

£14.45

(inc. VAT)

Add to Basket
Select or type quantity
In Stock
  • Plus 305 unit(s) shipping from 04 May 2026
  • Plus 155 unit(s) shipping from 04 May 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units
Per unit
Per Pack*
5 - 20£2.408£12.04
25 - 45£2.31£11.55
50 - 120£2.258£11.29
125 +£2.216£11.08

*price indicative

RS Stock No.:
667-1857
Brand:
RS PRO
Find similar products by selecting one or more attributes.
Select all

Brand

RS PRO

Product Type

Pneumatic Quick Connect Coupling

Series

21

Sub Type

Single Shut Off (One Side Is with Valve)

Hose Barb Connection

4mm

Material

Brass

Thread Gender

Female, Male

Minimum Operating Temperature

-20°C

Maximum Operating Temperature

100°C

Maximum Operating Pressure

35 bar

Finish

Nickel Plated

Standards/Approvals

Camozzi, Legris, Rectus 21, Rectus 90

Series 21 Connectors


Series 21 Connectors


Miniature pattern connectors, suitable for many applications including small air tools, dental equipment, robotics and automation. Small body dimensions with high flow rate and low pressure drop. Maximum operating pressure 35 bar and temperature range is -20°C to +100°C. All couplings are of the single shut-off type and all allow one handed operation. Interchangeable with Rectus Series 21.

Related links