1 / 6 Classification: 4.30.10.70.20

Reference: 170-P-060100-E-04 / 08.15

Check Valves for SAE Flange Ports,

Fit between Port and Flange, O-rings on both Faces

Series RVSAE 3/6DS..., 1200 l/min, 420 bar

Patent No. 38 34 066

180°-inverted installation

When 2 mating faces both have O-rings,

an insert plate, type ZPSAE...,

must be used.

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 (does not apply to the 2½” size).

The no-flow direction can be reversed

by inverting the valve.

Insert plates for sealing are available

as required – see also valve series

RVSAE3/6.... with O-ring on one face

(Data Sheet 170-P-060000-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

dvantages

 Virtually leak-free

 High dynamic 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 2½“ flange ports

Dimensions see Table in section 5, Dimensions

Mounting attitude unrestricted

No-flow direction reversible by inverting the valve (see symbol)

Operating pressure range ...6000 psi (420 bar)

Opening pressure 0.2 … 4 bar

Flow rate, Q max. ...1200 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-060100-E-04 / 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 2 O-ring

6 - Insert 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-rings

RVSAE3/6DS-34-… 33 42.5 42.5 19 60 24.99 x 3.53 N90

RVSAE3/6DS-11-… 38 47.9 47.9 25 68 32.92 x 3.53 N90

RVSAE3/6DS-114-… 43 55.4 55.4 29.5 78.5 37.69 x 3.53 N90

RVSAE3/6DS-112-… 48 65.8 65.8 35 93 47.22 x 3.53 N90

RVSAE3/6DS-21-... 63 79.7 79.7 42 113 53.57 x 3.53 N90

RVSAE3DS-212-… 85 94 94 53.8 132.95 69.45 x 3.53 N90

RVSAE6DS-212-… 85 104 104 53.8 147.1 69.45 x 3.53 N90

170-P-060100-E-04 / 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

Check valve model

E F M UNC

3000 psi

(210 bar)

RVSAE3/6DS-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

RVSAE3/6DS-11-... 52,4 26,2 M 10 3/8”

RVSAE3/6DS-114-... 58,7 30,2 M 10 ---

RVSAE3/6DS-112-... 69,9 35,7 M 12 ½”

RVSAE3/6DS-21-... 77,8 42,9 M 12 ½”

RVSAE3DS-212-… 88,9 50,8 M12 ½”

6000 psi

(420 bar)

RVSAE3/6DS-34-... 50,8 23,8 M 10 3/8”

RVSAE3/6DS-11-... 57,2 27,8 M 12 7/16”

RVSAE3/6DS-114-... 66,7 31,8 M 14 ½”

RVSAE3/6DS-112-... 79,4 36,5 M 16 5/8”

RVSAE3/6DS-21-... 96,6 44,5 M 20 ¾”

RVSAE6DS-212-... 123,8 58,7 M 24 ---

RVSAE3/6-114… on a 3000 psi port, accepts M10 bolts only.

RVSAE6DS-114… (6000 psi model) accepts M24 bolts only.

5.3 Minimum distance between 2 SAE check valves

6000 psi

3000 psi

shorter distances on inquiry

min

3000 psi

(210 bar)

and

6000 psi

420 (bar)

RVSAE3/6D-34-... 61,00

RVSAE3/6DS-11-... 69,00

RVSAE3/6DS-114-... 79,50

RVSAE3/6DS-112-... 94,00

RVSAE3/6DS-21-... 114,00

RVSAE3DS-212-… 133,00

RVSAE6DS-212-... 148,10

170-P-060100-E-04 / 08.15 4 / 6

6 Performance graphs

measured with oil viscosity 33 mm²/s (cSt)

170-P-060100-E-04 / 08.15 5 / 6

7 Ordering details

Model code key – check valve Ex. R

SAE 3/6 DS -

Check valve RV

for SAE flange port (fits between port and flange) SAE

With dual-purpose body 3000 psi / 6000 psi 3/6

For 3000 psi port (for size 212) 3

For 6000 psi port (for size 212) 6

O-rings on both faces DS

Inklusiv one insert plate DSZ

Nominal size

¾“ 34

1“ 11

“ 114

“ 112

2“ 21

“ 212

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-rings

Nitrile (standard) (blank)

Viton V

Contact Bucher Hydraulics for further information on:

- other opening pressures

- special materials

- customised designs

Model code key – insert plate

Ex. ZPSAE - ____

Insert plate for SAE check valve ZPSAE

Nominal size

¾“ 34

1“ 11

“ 114

“ 112

2“ 21

“ 3000 psi 212/3

“ 6000 psi 212/6

170-P-060100-E-04 / 08.15 6 / 6

8 Design and installation notes

By turning them through 90°, the

RVSAE3/6DS-… dual-purpose bodies

and insert plates can be used on both

3000 psi and 6000 psi ports of the

same nominal size (does not apply to

the 2 ½” size).

Where an insert plate is 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

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.