6-33
6C.PMD CM
Check Valve
Series 6C
Catalogue HY11-2500/UK
6
Parker Hannifin GmbH & Co. KG
Hydraulic Controls Division
Kaarst, Germany
Code Description
616 M16 x 1.5
818 M18 x 1.5
1022 M22 x 1.5
1227 M27 x 2.0
Characteristics / Ordering Code
6 C
Pipeline
installation
S
Steel
body
SizeMetric
port thread
ISO 6149
Drawing shown without O-Ring
Ordering code
Features
• Connection form corresponds to the standard ISO
6149 with conical contacting surface for the O-ring
• Metric connecting thread
• Seal works reliably against leakage due to O-ring seal
between screw-in threaded joint and connecting
thread.
• Can be replaced world-wide.
Check valves of the series 6C have metric connecting
thread to ISO 6149. The valve enables the free flow in
one direction and blocks flow in the counter-direction.
Size 616 818 1022 1227
Nominal pressure [bar] 350 350 350 350
Flow [l/min] 65 110 155 240
Connecting thread M16 x 1.5 M18 x 1.5 M22 x 1.5 M27 x 2
Opening pressure [bar] 0.35 (standard)
Material Body: ASTM 12L14 steel
Poppet: ASTM 416 stainless steel
Guide: ASTM 416 stainless steel
Spring: ASTM 316 stainless steel
Seals* Nitrile (NBR)
Fluorocarbon (FPM) optional
Technical data
* no seal at M27x2.0
6-34
6C.PMD CM
Check Valve
Series 6C
Catalogue HY11-2500/UK
6
Parker Hannifin GmbH & Co. KG
Hydraulic Controls Division
Kaarst, Germany
Port Dimensions
Size thread
ACD
6C616S M16 x 1.5 79.4 25.4
6C818S M18 x 1.5 88.9 28.6
6C1022S M22 x 1.5 101.6 31.8
6C1227S M27 x 2.0 117.5 38.1
Dimensions
