1 / 6 Classification: 4.30.10.70.10
Reference: 170-P-060000-E-03 / 08.15
Check Valves for SAE Flange Ports,
Fit between Port and Flange, O-ring on one Face
Series RVSAE 3/6..., 1000 l/min, 420 bar
Patent No. 38 34 066
180°-inverted installation
Inverted installation normally requires
1 x ZPSAE… insert plate
and 1 x DPSAE… seal plate.
1 General
1.1 Product description
These patented dual-purpose SAE
check valves are centred between the
shafts of the four SAE flange bolts.
This results in a compact, easy-to-
install assembly.
The valves can be used without modi-
fication on both 3000 psi (210 bar)
and 6000 psi (420 bar) SAE flange
ports.
The no-flow direction can be reversed
by inverting the valve.
Seal plates and insert plates are
available as required – see also series
RVSAE3/6DS.... with O-rings on both
faces (Data Sht. 170-P-060100-E).
The valve design is based on a guided
poppet that is hardened and ground.
In the no-flow direction, the valve
closes.
The valves can be used for pressure
relief in the opening direction, but only
to a limited extent (consult Bucher
Hydraulics for such applications).
1.2
A
dvantages
Virtually leak-free
High pressure rating
Compact construction
The same valve body is used for
3000 psi and 6000 psi ports
Same valve body is used for no-
flow directions A B and B A
Optional orifice for metered flow in
the no-flow direction
2 Main characteristics
Designation SAE check valve
Design guided spherical-poppet design
Mounting method fits between port and flange
Size for SAE ¾“ to 2“ flange ports
Dimensions see Table in section 5, Dimensions
Mounting attitude unrestricted
No-flow direction reversible by inverting the valve (see symbols)
Operating pressure range ...6000 psi (420 bar)
Opening pressure 0.2 … 4 bar
Flow rate, Q max. ...1000 l/min
Fluid HL and HLP hydraulic oils to DIN 51524. Other fluids, contact Bucher Hydraulics
Temperature range -30°C... +80°C
Viscosity range 10 ... 500 mm²/s (cSt)
Min. fluid cleanliness 18/14 to ISO 4406 / CETOP RP70H, 8…9 to NAS 1638
For applications outside these parameters, please contact Bucher Hydraulics.
170-P-060000-E-03 / 08.15 2 / 6
3 Schematic section
4 Components
Item Qty. Description
1 1 Body
2 1 Guide bush
3 1 Spherical poppet
4 1 Spring
5 1 O-ring
6 - Insert plate (if required, order separately)
7 - Seal plate (if required, order separately)
8 - Metering orifice (optional model: RVSAE...-D1x,,.-...)
5 Dimensions
5.1 Dimensions – valves
CV function CV function Plan view
inverted by 180°
3000 / 6000 psi
(210 / 420 bar)
H A B ØD X O-ring
RVSAE3/6-34-… 30 42.5 42.5 19 60 24.99 x 3.53 N90
RVSAE3/6-11-… 35 47.9 47.9 25 68 32.92 x 3.53 N90
RVSAE3/6-114-… 40 55.4 55.4 29.5 78.5 37.69 x 3.53 N90
RVSAE3/6-112-… 45 65.8 65.8 35 93 47.22 x 3.53 N90
RVSAE3/6-21-... 60 79.7 79.7 42 113 53.57 x 3.53 N90
170-P-060000-E-03 / 08.15 3 / 6
5.2 Dimensions – SAE flange ports
6000 psi (420 bar) 3000 psi (210 bar)
Suitable for flange: Tightening torque
for the flange
bolts
E F M UNC
3000 psi
(210 bar)
RVSAE3/6-34-... 47.6 22.2 M 10 3/8”
The tightening
torque depends
on the grade of
the connecting
bolts that are
used at the SAE
flange port
RVSAE3/6-11-... 52.4 26.2 M 10 3/8”
RVSAE3/6-114-... 58.7 30.2 M 10 --- *)
RVSAE3/6-112-... 69.9 35.7 M 12 ½”
RVSAE3/6-21-... 77.8 42.9 M 12 ½”
6000 psi
420 (bar)
RVSAE3/6-34-... 50.8 23.8 M 10 3/8”
RVSAE3/6-11-... 57.2 27.8 M 12 7/16”
RVSAE3/6-114-... 66.7 31.8 M 14 ½”
RVSAE3/6-112-... 79.4 36.5 M 16 5/8”
RVSAE3/6-21-... 96.6 44.5 M 20 ¾”
*) RVSAE3/6-114… on a 3000 psi port accepts M10 bolts only.
5.3 Minimum distance between 2 SAE check valves
6000 psi
3000 psi
shorter distances on inquiry
D
min
3000 psi
(210 bar)
und
6000 psi
420 (bar)
RVSAE3/6-34-... 61,00
RVSAE3/6-11-... 69,00
RVSAE3/6-114-... 79,50
RVSAE3/6-112-... 94,00
RVSAE3/6-21-... 114,00
170-P-060000-E-03 / 08.15 4 / 6
6 Performance graphs
measured with oil viscosity 33 mm²/s (cSt)
170-P-060000-E-03 / 08.15 5 / 6
7 Ordering details
Model code key – check valve Ex. RV SAE 3/6 __ - __ - _ - _ - _
Check valve RV
for SAE flange port (fits between port and flange) SAE
Dual-purpose body 3000 psi / 6000 psi 3/6
O-ring on one face only (blank)
Nominal size
¾“ 34
1“ 11
1
1
/
4
“ 114
1
1
/
2
“ 112
2“ 21
Opening pressure
0.2 bar 02
0.5 bar 05
1 bar 1
2 bar 2
4 bar 4
Metering orifice
Without orifice (blank)
With orifice (by consultation) D1x…
O-ring
Nitrile (standard) (blank)
Viton V
Contact Bucher Hydraulics for further information on:
- other opening pressures
- special materials
- customised designs
Model code key – seal plate
(complete with O-ring and retaining ring) Ex. DPSAE - _____ - _
Seal plate for SAE check valve DPSAE
Nominal size
¾“ 34
1“ 11
1
1
/
4
“ 114
1
1
/
2
“ 112
2“ 21
O-ring
Nitrile (standard) (blank)
Viton V
Model code key – insert plate Ex. ZPSAE - _____
Insert plate for SAE check valve ZPSAE
Nominal size
¾“ 34
1“ 11
1
1
/
4
“ 114
1
1
/
2
“ 112
2“ 21
170-P-060000-E-03 / 08.15 6 / 6
8 Design and installation notes
By turning them through 90°, the
RVSAE3/6-… dual-purpose bodies,
the seal plates and insert plates can be
used on both 3000 psi and 6000 psi
ports of the same nominal size.
Where a seal plate and an insert plate
are added, it is seldom necessary to fit
longer SAE flange connecting bolts.
The installation dimensions and toler-
ances must be maintained.
Referring to the free-flow direction,
nozzles and orifices must not be situ-
ated directly before the check valve
(see data sheet 170-P-059000-E).
When fitting the valve, take particular
care to ensure that the valve is firmly
seated on the sealing surface, but that
valve components are not deformed by
the use of excessive force.
Use the specified tightening torque
when fitting the SAE flange connecting
bolts.
9 Application notes
The maximum operating pressure must
not be exceeded and any pressure
peaks must be taken into consideration.
The specified nominal flow rate must
not be exceeded.
In applications such as accumulator
circuits, where sudden pressure can
be applied to the valve in the free-flow
direction, ensure that the specified
flow ratings are not exceeded.
Buyers bear the sole responsibility for
ensuring that the selected products are
suitable for their applications. Buyers
normally establish this by undertaking
qualification programs on test stands,
or by evaluating the performance of
prototype machines or systems.
info.dah@ bucherhydraulics.com www.bucherhydraulics.com
© 2015 by Bucher Hydraulics Dachau GmbH, D-85221 Dachau
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.
