Danfoss PVSP, PVSPM User guide
Technical Information
Priority Modules
PVSP, PVSPM
powersolutions.danfoss.com
Technical Information
PVSP, PVSPM Priority Modules
Revision history Table of revisions
Date Changed Rev
Nov 2017 Updated images and minor text changes 0106
Feb 2014 Converted to Danfoss layout – DITA CMS AE
2010-2012 Various updates AB-AD
Jul 2007 New Edition AA
2 | © Danfoss | Nov 2017 520L0291 | 0106
Technical Information
PVSP, PVSPM Priority Modules
Contents
Introduction
PVSP, PVSM General information............................................................................................................................................... 4
Version and code numbers...........................................................................................................................................................4
Sectional view of priority module PVSP/PVSPM................................................................................................................... 5
Code numbers and hydraulic schematics
Code numbers of other components........................................................................................................................................7
PVSP, PVSPM hydraulic schematics........................................................................................................................................... 8
Characteristics of PVSP/PVSPM................................................................................................................................................... 9
Dimensions
Valve group combination with PVPVM + PVSP...................................................................................................................10
Valve group combination with PVPV/M + PVSP/M............................................................................................................12
Stay bolt set PVAS, for pressure range 320-350 bar [4640-5076 psi] ......................................................................... 13
Stay bolt set PVAS, for pressure up to 350 bar [5076 psi]................................................................................................14
PVG 32 specification sheet
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Technical Information
PVSP, PVSPM Priority Modules
Introduction
PVSP, PVSM General information
With the introduction of PVSP, Danfoss can now supply modules with integrated priority function.
The modules offer the following advantages:
Integrated priority function for the OSP steering unit and/or the working hydraulics, PVB.
•
Compatible with open-centre or closed-centre PVP pump side modules with flows up to 160 l/min.
•
PVSP, PVSM Spool
Version and code numbers
PVSPM modules 157B6707, 157B6727 and 157B6709 to be installed as Mid-Inlet.
•
PVSP modules 157B6708, 157B6728, 157B6808 and 157B6828 to be installed as the valve group end
•
module instead of the PVS end plate.
Symbol Description Code number
CF = G½
P = G 1
PVSPM module giving priority to OSP + PVB
Prepared for PVLP 63 shock valve.
Max. pump pressure = 350 bar [5076 psi]
Max. pump flow = 160 l/min. [42 US gal/min]
CF flow OSP = 60 l/min [12 US gal/min]
CF flow PVB = 100 l/min [26.4 US gal/min]
PVSP module giving priority tor OSP
Max. pump pressure = 350 bar [5076 psi]
Max. pump flow = 160 l/min [42 US gal/min]
CF flow OSP = 60 l/min [12 US gal/min]
157B6707 (Open
center)
157B6727
(Closed center)
157B6708 (Open
center)
157B6728
(Closed center)
CF = [7⁄8 -14]
P = [1 5⁄16 -12 UN]
–
–
157B6808
(Open center)
157B6828
(Closed center)
PVSPM module giving priority to PVB
Max. pump pressure = 350 bar [5076 psi]
Max. pump flow = 160 l/min. [42 US gal/min]
CF flow PVB = 100 l/min [26.4 US gal/min]
157B6709
(Open/ Closed
center)
–
Compensator spool and shockvalve has to be specified separately see PVG 32 order specification form.
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Technical Information
PVSP, PVSPM Priority Modules
Introduction
Sectional view of priority module PVSP/PVSPM
Sectional view of priority module PVSP/PVSPM
1 – PP fixed orifice 6 – Compensator spool for CF-connection
2 – Dynamic orifice 7 – PVSP housing
3 – LS orifice for steering unit 8 – Priority spool
4 – Spring for compensator spool 9 – Plug, open-centre
5 – Connection for LS-signal 10 – Plug, closed-centre steering unit
Priority module PVSP contains a P-connection (for the pump) and a CF-connection (control flow).
Accordingly, the standard pump connections in PVP and PVPVM must therefore always be provided with
a steel plug.
The PVSP module can give priority to an OSP steering unit (or other valves) and/or a PVB 32 module. The
excessive flow is passed on through EF (excess flow) to non-prioritized PVB 32 basic modules.
If priority is solely given to the OSP steering unit (157B6708, 157B6728, 157B6808 or 157B6828), the PVSP
module fills in the place of end plate PVS(I). When specifying valve groups of this nature, you are
therefore not to give in any code number for PVS into field 11 in the specification form see PVG 32 order
specification form. In valve groups that must give priority to PVB 32 (max. one PVB), PVSPM must be
mounted as Mid-Inlet (157B6707, 157B6727 and 157B6709).
The PVB module that is given priority must be turned a 180° and installed on the right of PVSP see
orientation of ports in Dimensions. In closed-centre systems, the system relief valve in PVP opens at a
higher pressure (max. 20 bar) on the prioritized functions. It is therefore recommended to use PVB and
OSP with integrated relief valve.
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