Page 654 - Softbound_Edition_19_en

Info-poppet valves

ORIFICE DISC FOR POPPET VALVES

A orifice is required if the volume flow during shifting might pass the performance limit ( Q max ) of the valve. The corresponding orifice can be
mounted by the customer and enlarged if necessary according to ∆p/Q characteristic of orifice disc below.

Examplel: accumulator in P line

A

P T
SP
P
orifice disc in port P

O-ring

CHARACTERISTICS oil viscosity υ = 30 mm /s
2
∆p = f (Q) Pressure loss/flow characteristics
p [bar] Orifice diameter
300 K0021Ø 0,6 Ø 0,8 Ø 1,0 Ø 1,2 Ø 1,5 Ø 2,0
250
200
150
100
50
0
0 5 10 15 20 25 30 35 Q [l/min]

Available orifice discs
Part no.

Orifice NG3 NG4-Mini NG6 NG10
∅
∅ 0,6 212.0481 212.0406 212.0448
∅ 0,8 212.0440 212.0416 212.1466
∅ 1,0 212.0402 212.0407 212.1406
∅ 1,2 212.0469 212.0425
∅ 1,5 212.0445 212.1477
∅ 2,0 212.1480

Wandfluh AG Tel. +41 33 672 72 72 E-mail: [email protected] Illustrations not obligatory Data sheet no.
Postfach Fax +41 33 672 72 12 Internet: www.wandfluh.com Data subject to change 1.11-11010E 1/1
CH-3714 Frutigen Edition 17 01