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Continental Hydraulics, Inc.

Hydraulic Pumps

Vane Pumps
 
Series PVX-20B30
Series PVX-29B30
Series PVX-36B30
Variable Displacement, Pressure Compensated Vane Pumps
 

General Specifications:

Recommended Fluids
A premium quality hydraulic oil with anti-wear additives is recommended, but not required. consult factory for use with water base fire resistant fluids.
Recommended Operating Viscosities
For petroleum based fluids:
  • Optimum -- 150~250 SUS
  • Continuous Minimum -- 100 SUS
  • Continuous Maximum -- 1000 SUS
Operating Temperature
The operating temperature should be determined by the viscosity characteristics of the fluid used. Because high temperatures degrade seals, reduce the service life of the fluid, and create hazards, fluid temperatures should not exceed 140°F. (60°C) at the case drain.
Filtration
Fluid cleanliness per ISO/DIS 4406 should be 18/15 or better for pressures of 2000 psi (140 bar) or less. For continuous operating pressures of 2000 to 3000 psi (140 to 210 bar), fluid cleanliness should be 17/13 or better.
Mounting Position
Unrestricted, however horizontal mounting is preferred.
Drive
Pump to be connected to prime mover by means of a flexible coupling that is aligned to a maximum of .006" (.152mm) total indicator reading. Alignments greater than .006" (.152mm) indicator reading could cause increased noise and vibration as well as premature shaft seal wear resulting in leakage.
Seals
Buna N or Viton
Ports
SAE O-ring thread ports or SAE 2 bolt flange side port.
Shaft
Straight key or male spline
 
  
The pumps are designed to meet requirements of the machine tool, general machinery and other markets where low noise, high performance and competitive pricing are needed.
 
Note these improvements and features:
  • Continuous duty ratings
  • Speed range 1150, 1450 and 1759 rpm
  • High efficiency at full flow
  • Quiet operation
  • Modern appearance
  • Improved ring and vane wear
  • Fast response and recovery times
  • Reduced envelope size
  • Improved controls with shock clipper
  • Conforms to the latest SAE, ISO, NFPA or ANSI standards
  • Allows full horsepower transference to pump 2 on tandem mounted pumps
  • 3 year warranty
Benefits include:
  • Competitively priced with other manufacturers of vane and axial piston pumps
  • Reduced sound levels help meet government and purchased sound requirements
  • High performance and long life design
  • Fast reaction time for critical system demands
  • Pressure compensated pumps controls delivery to circuit demands thereby conserving energy
  • Hdrodynamic journal bearings provide long life and quiet operation
  • Repair kits are available from local distributor or the factory
  • Control option include single stage, two stage; load sensing, and torque limiting on most models
  • Shock clipper reduces shock pressure increasing system component life and stability

 

 
Series PVX-20B30, PVX-29B30 and PVX-36B30 Variable Displacement, Pressure Compensated Vane Pump Specifications
Model 20B30 29B30 36B30
Displacement (Nominal) 2.75 in³/rev. 3.84 in³/rev. 4.88 in³/rev.
Displacement (Actual) 2.88 in³/rev. 3.93 in³/rev. 5.02 in³/rev.
Flow @ 1750 RPM¹ 20.83 gpm 29.10 gpm 36.97 gpm
Maximum Continuous Pressure 3000 psi
Pressure Compensating Range Two stage 350-3000 psi
Minimum 300 psi
Maximum Transient Spike Pressure 4000 psi
Maximum Case Pressure 10 psi
Speed Range 1150 - 1800 rpm
Direction of Rotation (viewed shaft end) Right hand (clockwise)
Case Drain Flow while compensating at 1800 rpm 1000 psi 1.5 gpm 1.4 gpm 1.4 gpm
2000 psi 1.9 gpm 1.8 gpm 1.8 gpm
3000 psi 2.5 gpm 2.4 gpm 2.3 gpm
Maximum inlet vacuum at seal level 6 inches Hg
Mounting - SAE 2 bolt flange (ISO 3019/1) SAE "C" 2-bolt flange
Mounting position Unrestricted
Port Sizes Inlet 2" S.A.E.
Outlet 1-1/4" S.A.E.
Case Drain #8 S.A.E.
Remote control (opt.) #4 S.A.E.
Fluid Viscosity at operating temperature Minimum 150 SUS
Maximum 1000 SUS
Optimum 200-300 SUS
Maximum start-up 4000 SUS
Seals Standard fluorocarbon
Response time (Circuit dependent) 20-40 ms
Response time (Circuit dependent) 100-250 ms - two stage compensator
Weight Single stage 120 lbs.
Two stage 128 lbs.
NOTES:
¹ Flows are actual. Volumetric efficiencies shown in technical data are taken into account.
 
PVX-20B30, PVX-29B30 and PVX-36B30 Options
PVX - 29B 30 - RF - O - 5S 12 P1 27 24 - A Vane pump, 29.10 gpm @ 1750 rpm; clockwise rotation; Buna N seals; SAE flange/key/ port (flange mount); drive spline per SAE 744C; with cover plate only; solenoid operated two pressure normal open/low pressure (energize to high); 24 volt; design series A.
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Varies according to date of production
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12
24
115
220		 Voltage Options 27-30 only
Control options other than 27-30
12 Volt
24 Volt
115 Volt
220 Volt
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01
17
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26
27
 
 
28
 
 
29
 
 
30
 
 		 Control Options *Requires voltage selection
Maximum volume control (standard)
Pressure regulator (single stage)
Two stage (remote) pressure control
Load sense control
Horse power limiting
Solenoid operated two pressure normal open/low pressure (energize to high)
Solenoid operated two pressure normal closed/high pressure (energize to low)
Solenoid operated two pressure normal open/low pressure (energize to high)
Solenoid operated two pressure normal closed at pressure (energize to vent)
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22
 
23
 
51
 
52
 
53
 
 
 
 
 		 Tandem Options*
With cover plate only
For rear pump SAE "A" splined w/cover plate
For rear pump SAE "B" splined w/cover plate
For rear pump SAE "C" splined w/cover plate
For rear pump SAE "A" keyed w/cover plate
For rear pump SAE "B" keyed w/cover plate
For rear pump SAE "C" keyed w/cover plate
* P1 option provides a combination-capable rear cover. Code 21, 22, 23, 51, 52, and 53 are SAE adaptor kits and require P1 rear cover.
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12		 Shaft
Keyed shaft (standard)
Drive spline per SAE 744C
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O
P
W		 Seals
Buna N
Viton (standard)
Water Glycol
PVX - +
20B
29B
36B		 Code
20.8 gpm max at 1750 rpm
29.1 gpm max at 1750 rpm
36.9 gpm max at 1750 rpm

 
Air Bleed Valves permit easier pump priming and/or start-up under deadhead conditions. The valve is normally open to permit oil and air (if present) to pass from inlet to outlet and directly back to the reservoir. Pressure in the spool center section is bled via spool clearance to the no-spring end of the spool. As pressure builds up, it overcomes the spring, shifts the spool to close off the inlet port and allows full pump flow to the circuit. Seals are Viton. Minimum flow rate is 8 gpm. Minimum operating pressure is: @ 8 gpm - 500 psi, @ 15 gpm - 350 psi, @ 50 gpm - 200 psi. Maximum operating pressure is 3500 psi. Minimum pressure to hold closed is 150 psi. Typical closing times are: @500 psi - 30 seconds, @ 1500 psi - 10 seconds. Ports are either 1/4" NPTF or #6 SAE.

 
If you are located in Missouri, Kansas, Nebraska, or Illinois, you may contact us at the
following telephone and fax numbers with your requests or questions:
St. Louis telephone 314.428.4000 fax 314.428.4097
Kansas City telephone 913.829.5900 fax 913.829.0815
 
For ALL OTHER AREAS Please use the Info Request form for specific product information, pricing or other information.
Please include company name, contact name, address, phone number and fax number to ensure a timely response.
 
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Copyright © 2004 Flo-Products Company
Last modified:
Brochure: HPV 1/97