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Non-return valve
Non-return valves

Non-return valve
Sandwich construction NG6
• Q max = 80 l/min ISO 4401-03
• p max = 350 bar

DESCRIPTION FUNCTION APPLICATION
Sandwich type pilot operated non-return valve In the free flow direction, the volume flow opens Non-return valves allow the volume flow in one
NG6 with interface according to ISO 4401-03. the spring loaded valve seat. The spring keeps direction and shuts off in the opposite direction,
The valves allow a free flow in one direction the valve closed in the opposite direction. The preventing the pressurised fluid from flowing
and shut off in the opposite direction. 6 different opening pressure required depends on the back. Non-return valves in the P port prevents
standard versions are available. The steel sand- spring force. backward rotation of the pump. When installed
wich body is phosphatised. Good performance in the T port, the spring controlled opening
data and attractive design are the hall marks pressure prevents a hydraulic system from
of this quality product. draining to the tank. Sandwich type elements
NG6 make this a highly flexible system.

TYPE CODE
RNNS A06 - #

Non-return valve, sandwich construction
International standard interface ISO, NG6

Type list / Function
in P P in T T in P and T PT
in A A in B B in A and B AB
in AV AV in BV BV in AV and BV ABV

Design-Index (Subject to change)
64
GENERAL SPECIFICATIONS 10 40,5 HYDRAULIC SPECIFICATIONS
40
Description Non-return valve Fluid Mineral oil, other fluid on request
19
Nominal size NG6 acc. to ISO 4401-03 21,5 Contamination efficiency ISO 4406:1999, class 20/18/14
Construction Sandwich construction (Required filtration grade ß 10…16≥75)
Mounting 4 holes for hexagon socket screw M5 T refer to data sheet 1.0-50/2
or studs M5 Viscosity range 12 mm /s…320 mm /s
2
2
Connections Connection plates Fluid temperature -20…+70 °C
Multi-station flange subplate Peak pressure p max = 350 bar
B
Longitudinal stacking system A Opening pressure 21 32,5 45 p = 2 bar
31
5,5
ö
Ambient temperature -20…+50 °C Max. volume flow Q max = 80 l/min
∅
Mounting position any
Fastening torque M = 5,5 Nm (Quality 8.8)
D
Weight m = 0,85 kg P
SYMBOLS / TYPES 17,8
RNNSA06-P RNNSA06-A RNNSA06-AV
A PT B A PT B A PT B
RNNSA06-T RNNSA06-B RNNSA06-BV

A PT B A PT B A PT B
RNNSA06-PT RNNSA06-AB RNNSA06-ABV

A PT B A PT B A PT B

Wandfluh AG Tel. +41 33 672 72 72 E-mail: sales@wandfluh.com Illustrations not obligatory Data sheet no.
Postfach Fax +41 33 672 72 12 Internet: www.wandfluh.com Data subject to change 2.7-41E 1/2
CH-3714 Frutigen Edition 21 32
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