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Series 664, 5/8" / DN16 Pressure Eliminator

  • Flat-Face design    
  • Connection under pressure
  • One-hand operated

    Series 664 is a Flat-Face quick-connect nipple with a built-in pressure eliminator. The nipple is according to and exceeds the demands in the ISO 16028 Standard for low- and medium-pressure hydraulic applications. The Flat-Face design minimizes spillage during connection and disconnection. The pressure eliminator allows for connection with residual/trapped pressure on the nipple side. The nipple Series 664 connects with couplings in Series 665.

    The pressure eliminator nipples are also available in four other sizes; 1/4" / DN 6.3 (Series 264), 3/8" / DN 10 (Series 364), 1/2" / DN 12.5 (Series 564), 3/4" / DN 19 (Series 764). For steel couplings in accordance with ISO 16028 see Series 665.    
Technical data
Nominal flow diameter: (5/8Inch) 16 mm
Rated flow: 66.8 l/min (14.7 GPM UK)
Max. working pressure connected: 40.0 MPa
Max. working pressure disconnected: 40.0 MPa
Min. burst pressure connected: 120.0 MPa
Min. burst pressure disconnected: 120.0 MPa
Temperature range: -30°C — +100°C (-22°F — +212°F)
Material nipple: Hardened steel (zinc passivation)
Material seal: Nitrile (NBR), other sealing materials on request
Connectability: With static pressure up to 40 MPa on the nipple side
Disconnection under pressure: Not allowed
Comment: Connects with couplings from Series 665

Rated flow is measured at 0.1 MPa pressure drop.

Approved to max working pressure

Max working pressure 25 MPa according to ISO 16028

Nipples with pressure eliminator Part No. Connection Length Diameter Hexagon Seal
Female thread 106646201 G 3/4" 99.5 40 36 NBR
106646401 3/4" NPT 99.5 40 36 NBR