1/5
Type series: REPYB-16-…
Reference: 400-P-457102-EN-01/01.2021
- Screw-in cartridge valve
- For cavity ECY
- All external parts with zinc-nickel coating according to
DIN EN ISO 19598
- Installation in threaded port body type GEAA
- High ow rates
- Seated pilot stage
- Seat tight shut-o
- With external pilot-drain port
Check valve
Pilot operated check
Q
max
= 300 l/min, p
max
= 350 bar
pilot operated, poppet type, hydraulical operation
Type series: REPYB-16-…
Description
The pilot-operated check valves, series REPY…, are size
16, two stage, screw-in valves with an M42×2 moun-
ting thread. The poppet seat design ensures that the
valves are leak-tight from A1 to A. The check function
can be overridden by applying a suitable pilot pres-
sure at port X. In the ow direction A to A1, ow can
pass freely through the screw-in valve (opening pres-
sure >2 bar). The leakage-oil from the pilot piston is
drained via port Y. This type series is used where the
pressure in the A line can be more than 20 % of the
pressure in X while the valve is piloted open (oil ow
A1 to A). If this situation will not arise, series REPN…
cartridge check valves with internal leakage-oil drain
can be used. All external parts of the screw-in valve
are zinc-nickel plated, and are thus suitable for use in
the harshest operating environments. These valves
are mainly used in mobile and industrial applications
as pilot valves for controlling the travel direction of
actuators such as hydraulic motors and cylinders. For
self-assembly, please refer to the section related data
sheets.
Symbol
A1
A
X
YY
2/5
Type series: REPYB-16-…
Reference: 400-P-457102-EN-01/01.2021
Technical data
General Characteristics Description, value, unit
Function group Check valve
Function Pilot operated check
Design Screw-in cartridge valve
Controls hydraulical operation
Characteristic pilot operated, poppet type
Construction size nominal size 16
Thread size M42×2
Mounting attitude unrestricted
Weight 0.77 kg
Cavity acc. factory standard For cavity ECY
Tightening torque steel 400 Nm
Tightening torque aluminium 400 Nm
Tightening torque tolerance ± 10 %
Minimum ambient temperature - 25 °C
Maximum ambient temperature + 80 °C
Surface protection
All external parts with zinc-nickel coating according to DIN EN
ISO 19598
Available seal types several seal types available, see ordering code
Seal kit order number NBR: DS-361-N / FKM: DS-361-V
Hydraulic Characteristics Description, value, unit
Maximum operating pressure 350 bar
Maximum ow rate 300 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 … 650 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
Geometric Dierential Area Ratio 1:16
Opening pressure A to A1: > 2 bar
Pilot pressure see table at chapter "dimensions and sectional view"
3/5
Type series: REPYB-16-…
Reference: 400-P-457102-EN-01/01.2021
Performance graphs
measured with oil viscosity 33.0 mm²/s (cSt)
Δp = f (Q) Pressure drop-ow rate characteristic
P0016.ai
0
5 (70)
10 (140)
15 (215)
20 (285)
25 (350)
Q [l/min]
300
(79)
250
(66)
200
(52)
150
(39)
100
(26)
50
(13)
0
p [bar (psi)]∆
1)
2)
1) A1 → A
2) A → A1
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Type series: REPYB-16-…
Reference: 400-P-457102-EN-01/01.2021
Dimensions and sectional view
45 / 48 / 51
31 / 33 / 35
16 / 18 / 20
6 / 7 / 8
Pilot pressure at X port
1)
[reference values
]
1)
The pilot pressure needed at the X port depends on the
flow and pressure from A1
→
A
1)
Beispiel für die Masseinheit:
Example for the dimensional units:


LQFK
 PP PLOOLPHWHU
p A1
[bar (psi)]
Q
[l/min (gpm)]
p X
[bar (psi)]
50 (700)
100 (1400)
200 (2900)
300 (4300)
100 / 150 / 200
(26 / 39 / 52)
100 / 150 / 200
(26 / 39 / 52)
100 / 150 / 200
(26 / 39 / 52)
100 / 150 / 200
(26 / 39 / 52)
(640 / 685 / 730)
(440 / 470 / 500)
(230 / 260 / 285)
(85 / 100 / 120)
46
0$ 
Ø49
(Ø1.92)
M42×2
89.7
(3.53)
19
(.748)
108.7
(4.27)
A
A1
X
Ø39.34×2.62
Ø32.99×2.62
Ø31.42×2.62
Ø31.70×2.25×1.40
Ø32.99×2.62
Ø29.90×2.25×1.40
Ø30.80×2.25×1.40
Installation information
NOTE!
1) When tting the screw-in cartridge valve,
use the specied tightening torque. The value
can be found in the chapter "Technical data".
NOTE!
The seals are not available individual-
ly. The seal kit order number can be
found in the chapter "Technical data".
ATTENTION!
Only qualied 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.
5/5
Type series: REPYB-16-…
Reference: 400-P-457102-EN-01/01.2021
Ordering code
R=
check valve
E=
pilot operated
P=
cartridge design
Y=
with external drain
A
... Q=standard model according to valid data sheet (standard)
Z ...
R=special model after consultation
16
= nominal size 16
1 ...
9=technical design no. (omit when ordering)
-1
_
-
B 16-PER Y
(blank)
=
V=
FKM (fluorocarbon rubber / VITON) seals
(special seals - please consult BUCHER)
NBR (nitril-butadien-rubber / BUNA) seals (standard)
Ex.
Related data sheets
Reference Description
400-P-040011 Form tools
400-P-080122 Cavity ECY
400-P-750201 Threaded port body GEAA
info.ch@bucherhydraulics.com www.bucherhydraulics.com
© 2021 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.