Denison Hydraulic Pump Open-circuit Variable Displacement Axial Piston Pump PVP61 122 31R 160012

Denison Hydraulic Pump

Open-circuit Variable Displacement Axial Piston Pump

MODEL PVP61 122 31R 160012

NAVY NSN THH 1650-01-143-0221

ser # 0000408100D

CAGE # 9F512

WITH SCHROEDER FILTER HOUSING

MODEL IF301D10SD

WP 3000 PSI ELEMENT D10

BYPASS VALVE 30

 Your complete assembly is a Denison open-circuit variable displacement axial piston pump integrated with a Schroeder filtration loop, specifically used in U.S. Navy marine/surface vessel applications (such as hydraulic winches, steering systems, or replenishment gear).

• Component Integration Breakdown
• The Pump (PVP61 122 31R 160012): This is a heavy-duty Denison / Parker PVP61 Series marine-grade axial piston pump rated for continuous operating pressures up to 3,500 PSI. The code specifies a displacement variation, a right-hand (CW) rotation (R), and specific control/stroker configurations.
• The Logistics Code (THH 1650-01-143-0221): In Naval Shipboard systems, "THH" is a specialized logistics prefix representing a specific local Navy Hull or Machinery group management code (often tied to Shipboard Tool/Component Kits or allowance lists). The underlying stock classification is FSC 1650 (Hydraulics) coupled with a dedicated Navy-managed control number.
• The Filter Housing (IF301D10SD): A top-ported, legacy inline fluid filter manufactured by Schroeder Industries. It is configured to run inline with the pump's open-circuit loop to safeguard the piston tolerances from fluid contamination.
• The Core Specs (WP 3000 PSI | Element D10 | Bypass 30): This means the structural filter housing handles a maximum Working Pressure (WP) of 3,000 PSI. It houses a 10-micron nominal cellulose/synthetic element (Model D10). If the filter media becomes heavily clogged with contaminants, an internal 30 PSI mechanical bypass valve will crack open to ensure continuous system flow and prevent the element from collapsing under pressure.
  
  

Core Performance Specifications

The PVP61 series functions as a durable, medium-to-high pressure industrial workhorse:

• Maximum Displacement: Approximately 61 cm³/rev (3.72 in³/rev).
• Maximum Continuous Pressure: Up to 3,500 PSI (241 bar).
• Intermittent Peak Pressure: Up to 4,500 PSI (310 bar).
• Maximum Speed: Configured for standard prime movers up to 1,800 RPM.
• Rotation Strategy: The "R" configuration dictates Right Hand (Clockwise) rotation when looking at the input shaft.
  

• Operational Features
• Cast Iron Construction: Built using a high-strength cast-iron housing designed to limit vibration and provide low-noise industrial operation.
• Field Serviceability:
• Utilizes replaceable bronze port plates and piston slipper plates to allow long-term rebuild viability without discarding the primary housing.
• System Integration
• : This open-loop design supports variable stroke adjustment via internal servo piston assemblies to match immediate flow demand with the downstream circuit.