Thermal Control Products, Full-Flow Couplings & Nipples

Series 851, DN38 Brass

  • Wide range of sealing materials
  • Colour-coded rings to avoid cross connection
  • Durable design to withstand long periods of connection

Full-Flow series 851 couplings are the optimal choice in larger fluid and pneumatic lines that require unrestricted high flow. The straightforward design of this DN25 coupling reduces pressure drop and makes it easy to install and later on maintain and service. It has a maximum working pressure of 20 bar and offers a long service life due to its robust design. The economical valveless design is a perfect fit for applications such as main supply lines in power electronics, renewable energy solutions, etc. For extra protection, optional colour-coded rings and a safety-locking device are available.


Additional sizes are series 701 and 921. Also available in stainless steel: see series 702, 852 and 922. If you can’t find a product that meets your requirements, don’t hesitate to contact us, and we’ll put our R&D department at your disposal.

Applications:Heat transfer, compressed airlines, various chemical transfers.

Series 851, DN38 Brass
Technical data
Nominal flow diameter: 38 mm (1.5")
Max. working pressure: 20 bar (290 PSI)
Min. burst pressure: 80 bar (1160 PSI)
Temperature range: -30°C — +100°C (-22°F — +212°F)
Material coupling: Nickel-plated brass
Material nipple: Nickel-plated brass
Couplings without valve Part No. Connection Seal Length Diameter Hexagon
Female thread 10 851 0205108510205G 1 1/2"NBR666960


Nipples without valve Part No. Connection Seal Length Diameter Hexagon
Female thread 10 851 5205108515205G 1 1/2"-706960


Check with an authorized CEJN distributor for availability and prices. Other connections and sealing material on request. Some part numbers may be subject to minimum order quantities. CEJN reserves the right to make changes without further notification. Thread connections are listed according to ISO Standards. All measurements are in mm.

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