Transcript
®
Eaton
Pressure Modulating Control Valve
Model 31931, 7 GPM Pressure Modulating Control Valve
No. 11-514 April, 1998
Model 31931 Pressure Modulating Control Valve
Features and Specifications ®
Eaton 7 GPM Pressure Modulating Control Valve Model 31931-CBZ Applications • Front Mounted Rotary Deck Mowers • Front Mounted Reel Mowers Similar to other single spool control valves, this valve allows the operator to smoothly position (raise and lower) the mower deck or reels with precision. In addition, lift circuit back pressure can be modulated by operating a rotary needle cartridge which allows the operator to take weight off the cutting units for reduced ground pressure and increased tractive effort or to apply down pressure to the cutting units for improved cutting finish.
Standard Features • • • • • •
Cast Iron Bodies Cored Internal Passages 3/4" -16 SAE Inlet and Return Ports 9/16" -18 SAE Work Ports Detent – Float Modulating Valve – Cartridge Needle Type
Specifications • Inlet Flow Rate ------------------------------------------------- 26.5 L/min [7 GPM ] • Pressure Rating ----------------------------------------------- 172 bar [2500 PSI] • Maximum System Temperature ----------------------------- 107° C [225° F]
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Model 31931 Pressure Modulating Control Valve
Dimensions
46 [1.81]
28.2 [1.11] 19.6 [.77] 33.3 [1.31]
35.1 [1.38]
74.4 [2.93]
85.9 [3.38] 77.7 [3.06]
19 [.75] PRESSURE PORT 3/4-16 UNF-2B SAE O-RING PORT 7.9 [.31]
11.2 [.44]
38.9 [1.53]
IN
6.4 [.25] A
58.7 [2.31]
B
65 [2.56] 6.4 [.25]
BYD
OUT RETURN PORT 3/4-16 UNF-2B SAE O-RING PORT
15 [.59]
6.91-6.65 2X dia. [.272-.262]
THIS VALUE IS TYPICAL THRU
213.4 [8.40]
SHAFT LENGTH MAY VARY BY MOUNTING APPLICATION CONTACT THE FACTORY FOR OTHER SHAFT LENGTHS
SET SCREW TORQUE 5.4-6.8 N.m [4.5±.5 lb.ft] ALL DIMENSIONS GIVEN ARE IN MILLIMETERS [INCHES]
Schematics IN
IN
OUT
OUT
A A
B
B
Cylinder
UP PRESSURE
Cylinder
DOWN PRESSURE
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Information contained in this catalog is accurate as of the publication date and is subject to change without notice. Performance values are typical values. Customers are responsible for selecting products for their applications using normal engineering methods. ACCREDITED BY THE DUTCH COUNCIL FOR CERTIFICATION Reg. No. 24
Eaton Corporation Hydraulics Division 15151 Hwy. 5 Eden Prairie, MN 55344 Telephone 612/937-9800 Fax 612/937-7130
Eaton Ltd. Hydraulics Division Glenrothes, Fife Scotland, KY7 4NW Telephone 01-592-771-771 Fax 01-592-773-184
www.eaton.com Form No. 11-514 April, 1998
Copyright Eaton Corporation, 1998 All Rights Reserved Printed in USA
Eaton GmbH Hydraulics Products Am Schimmersfeld 7 40880 Ratingen, Germany Telephone 02102-406-830 Fax 02102-406-800
ISO-9001 CERTIFICATED FIRM DET NORSKE VERITAS INDUSTRY BV, THE NETHERLANDS
Quality System Certified Products in this catalog are manufactured in an ISO-9001-certified site.
