For applications where a larger flow rate is required through the test point, the 1604 has a 4mm internal design compared to the 2mm standard in 1620, 1215 and 1615 test points.

Max. working pressure 400 bar (5800 psi)

Media application
Suitable for hydraulic and other oils of a mineral oil basis

Material
Standard: coupling body and metal cap made from free cutting steel 1.0718, galvanised and chromised

Option:
•Corrosion-resistant stainless steel 1.4104
•Acid-resistant stainless steel 1.4571 antimagnetic (on request)

Sealings
Internal primary- and secondary sealing and sealing forscrew-in thread made of Buna N. Option in viton

Screw-in thread
Different kinds of thread connections are available

Option: Safety devices against vibration
Safety device against vibration. Additional O-ring made from Buna N against loosening of metal cap.

Temperature ranges
Sealings in Buna N:
-30 °C to + 120 °C (-22 °F to +248 °F)

Sealings in Viton (option):
-20 °C to +200 °C (-4 °F to +392 °F)