Hydraulic Products, X64 Range - ISO 16028 Flat-Face Pressure Eliminator Nipples

Series 564, DN12.5 Pressure Eliminator

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


CEJN Series 564 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 564 connects with couplings in Series 565, Series 566 and Series 562.


The pressure eliminator nipples are also available in four other sizes; DN 6.3 (Series 264), DN 10 (Series 364), DN 16 (Series 664), DN 19 (Series 764). For steel couplings in accordance with ISO 16028 see Series 565. Stainless steel versions of the standard are available in Series 566. Series 562 feature an interchangeable steel coupling designed for lower pressures.

Series 564, DN12.5 Pressure Eliminator
Nipples with pressure eliminator Part No. Connection Length Diameter Hexagon Seal
Female thread 10 564 6405 1056464051/2" NPT95.335.732NBR
 10 564 6105 105646105Rc 1/2" (BSPT)95.335.732NBR
 10 564 6205 105646205G 1/2" (BSP)95.335.732NBR
 10 564 6207 105646207G 3/4" (BSP)9736.733NBR
 10 564 6605 1056466053/4"-16 UNF (1/2" SAE)95.335.732NBR
 10 564 6606 1056466067/8"-14 UNF (5/8" SAE)95.335.732NBR
 10 564 6607 1056466071 1/16-12 UN (3/4" SAE)99.34138NBR
 10 564 6295 105646295G 1/2" JIS ORB95.535.732NBR
Male thread 10 564 6554 105646554M18x1.5 12L95.336.232NBR
 10 564 6555 105646555M22x1.5 15L96.336.232NBR
 10 564 6557 105646557M18x1.5 12LS bulkhead120.336.232.24NBR
 10 564 6558 105646558M22x1.5 15LS bulkhead122.336.232.30NBR
 10 564 6756 10564675613/16"-16 ORFS bulkhead125.335.732.30NBR
 10 564 6758 1056467581"-14 ORFS bulkhead128.340.536.36NBR


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.
Technical data
Temperature range: -30°C — +100°C (-22°F — +212°F)
Material nipple: Hardened steel (zinc passivation)
Material seal: Nitrile (NBR/PUR)
Connectability: With static pressure up to 400 bar on the nipple side
Max. working pressure connected: 400 bar (5801 PSI)
Max. working pressure disconnected: 400 bar (5801 PSI)
Min. burst pressure connected: 1200 bar (17404 PSI)
Min. burst pressure disconnected: 1200 bar (17404 PSI)
Disconnection under pressure: Not allowed
Comment: Connects with couplings from Series 565, Series 566 and Series 562
Interchangeable with: All brands dimensionally interchanging with ISO16028

Rated flow is measured at 0.1 MPa pressure drop.
Approved to max working pressure
Max working pressure 25 MPa according to ISO 16028

Pressure drop chart
Series 564, DN12.5 Pressure Eliminator Flow measured with coupling Series 565

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