1/5
Type series: W1T.../ W1W... (installation deep)
Reference: 400-P-110311-EN-01/01.2022
- Slip-in cartridge valve
- For cavity AB
- All external parts with zinc-nickel plating according to
DIN EN ISO 19598
- Guided valve spool and poppet
- With bidirectional seat-valve shut-o
- Installation in threaded port body type GABA
Directional valve
2-way/2-position
Q
max
= 40 l/min, p
max
= 315 bar
direct acting, poppet type, mechanical operation
Type series: W1T.../ W1W... (installation deep)
Description
The 2-way/2-position solenoid-operated directional
seat valves, series W1T… / W1W… (installation deep),
are size 6, direct acting, and pressure balanced screw-
in valves. They are designed on the tried and tested
principle of the guided poppet, the guide spool has a
seal, and they are virtually leak-free in both directions
of ow (bidirectional seat-valve shut-o). This type
is the "deep" installation version, which ts into the
cavity type according to the AD factory standard. For
the "shallow" installation version, see separate data
sheet. The hand lever can be turned through 360° and
is available as a "detentable" (W1T...) or "non-detenta-
ble" (W1W...) model. All external parts of the cartridge
are zinc-nickel plated, and are thus suitable for use
in the harshest operating environments. The slip-on
coils can be replaced without opening the hydraulic
envelope and can be positioned at any angle through
360°. These valves are predominantly used in certain
mobile and industrial applications where leak-tight
shut-o functions are crucially important. Examples
are where loads, tensions, or clamping forces must be
held without leakage. For self-assembly, please refer
to the section related data sheets.
Symbol
1
2
W1T...
1
2
W1W...
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Type series: W1T.../ W1W... (installation deep)
Reference: 400-P-110311-EN-01/01.2022
Technical data
General characteristics Description, value, unit
Function group Directional valve
Function 2-way/2-position
Design Slip-in cartridge valve
Controls mechanical operation
Characteristic direct acting, poppet type
Construction size nominal size 6
Mounting attitude unrestricted
Weight 0.45 kg
Cavity acc. factory standard For cavity AB
Tightening torque steel 5.2 Nm
Tightening torque aluminium 5.2 Nm
Tightening torque tolerance ± 5 %
Minimum ambient temperature - 25 °C
Maximum ambient temperature + 80 °C
Surface protection
All external parts with zinc-nickel plating according to DIN EN
ISO 19598
Sealing material see ordering code
Seal kit order number NBR: DS-387-N / FKM: DS-387-V
Hydraulic characteristics Description, value, unit
Maximum operating pressure 315 bar
Maximum ow rate 40 l/min
Flow direction see symbol
Hydraulic uid
HL and HLP mineral oil according to DIN 51 524; other uids
on request!
Minimum uid temperature - 25 °C
Maximum uid temperature + 80 °C
Viscosity range 10 … 500 mm²/s (cSt)
Recommended viscosity range 15 … 250 mm²/s (cSt)
Minimum uid cleanliness (cleanlineless class according to ISO
4406:1999)
class 20/18/15
Mechanical characteristics Description, value, unit
Execution with hand lever, can be turned through 360°
Actuation angle 15 °
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Type series: W1T.../ W1W... (installation deep)
Reference: 400-P-110311-EN-01/01.2022
Performance graphs
measured with oil viscosity 33.0 mm²/s (cSt)
p = f (Q) Performance limit Δp = f (Q) Pressure drop-ow rate characteristic
400-PG-0415
0
50 (700)
100 (1400)
150 (2100)
200 (2900)
250 (3600)
300 (4300)
350 (5000)
Q [l/min (gpm)]
403020100
p [bar (psi)]
(10)(7.5)(5)(2.5)
400-PG-0416
0
5 (70)
10 (140)
15 (215)
20 (285)
25 (350)
Q [l/min (gpm)]
403020100
p [bar (psi)]∆
(10)(7.5)(5)(2.5)
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Type series: W1T.../ W1W... (installation deep)
Reference: 400-P-110311-EN-01/01.2022
Dimensions and sectional view
betätigte Stellung/
operated position
15°
Ø23.52×1.78
Ø15.60×1.78
Ø14.00×1.78
4
Ø20.29×2.62
2×
63.7
(2.50)
10.1
(0.39)
Beispiel für die Masseinheit:
Example for the dimensional units:
LQFK
PP PLOOLPHWHU
Ø23
(Ø .905)
146.9
(5.78)
126.9
(4.99)
M5
6.4
(.252)
32.3
(1.27)
96
(3.78)
□
40
(□1.57)
1
2
0$
Installation information
ATTENTION!
Only qualied personnel with mechanical
skills may carry out any maintenance work.
Generally, the only work that should ever be
undertaken is to check, and possibly replace,
the seals. When changing seals, oil or grease
the new seals thoroughly before tting them.
NOTE!
1) When tting the slip-in valves, use
the specied tightening torque for the
mounting screws. The value can be
found in the chapter "Technical data".
NOTE!
These valves can also be tted in the cavity AD
according to factory standard, and in such ca-
ses port 3 then has the same function as port 2.
IMPORTANT!
A “non-operated open” function can be crea-
ted by using the 3/2 cartridge seat valve and
the GADA line-mounting body. In this case,
ports 2 and 3 are used. Port 1 is plugged.
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Type series: W1T.../ W1W... (installation deep)
Reference: 400-P-110311-EN-01/01.2022
Ordering code
W1
= directional valve, poppet-type, direct acting
Ex.
A…Q
= standard model according to valid data sheet (standard)
Z…R
= special model after consultation
:
T
= 2-way/2-position, with hand lever detentable
7 %
5
R
= NBR (nitril-butadien-rubber / BUNA) seals (standard)
T
= FKM (fluorocarbon rubber / VITON) seals
1…9
= technical design no. (omit when ordering)
W
= 2-way/2-position, with hand lever non-detentable
(special seals - please consult BUCHER)
Related data sheets
Reference Description
400-P-040011 Form tools
400-P-040102 Cavity AB
400-P-730111 Threaded port body GABA
info.ch@bucherhydraulics.com www.bucherhydraulics.com
© 2022 by Bucher Hydraulics AG Frutigen, 3714 Frutigen, Switzerland
All rights reserved.
Data is provided for the purpose of product description only, and must not be construed as warranted characteristics in the legal sense. The
information does not relieve users from the duty of conducting their own evaluations and tests. Because the products are subject to continual
improvement, we reserve the right to amend the product specifications contained in this catalogue.
