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The Jabsco 31620-0092 Par Max 4 pressure-controlled diaphragm pump delivers on-demand 12V DC freshwater pressure for multi-outlet systems, providing up to 16 liters/minute (3.5 GPM) open flow with a 20–40 PSI pressure-switch range. Its self-priming multi-diaphragm design supports up to 1.5 m (5 ft) lift, can run dry without damage, and operates quietly with an automatic thermal overload cut-out for added protection. Snap-in ports simplify installation with 13 mm (1/2 inch) hose or Hep20 push-fit connectors, and a built-in bypass helps reduce cycling for smoother flow.
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Par Max 4 On-Demand Freshwater Pressure Pump (Jabsco 31620-0092)
The Jabsco 31620-0092 Par Max 4 is a pressure-controlled, multi-diaphragm freshwater delivery pump built to maintain consistent water pressure across multiple outlets. Designed for demanding installations, it combines quiet running characteristics with protective motor features and quick-connect port options for straightforward plumbing.
Application
- Marine water systems
- RV water systems
- Residential water systems
- Multi-outlet supply (up to four or more outlets stated in the input text)
- Suitable for fresh water systems such as showers, sinks, and other water outlets
- Compatible with clean and slightly discolored water
Compatibility
- Connections for 13 mm (1/2 inch) bore hose
- Connections for Hep20 push-fit connectors
- Replacement model noted in the input: Jabsco Q401J-115S-3A
Technical Specifications
Brand Jabsco Model / Part Number 31620-0092 Operating Voltage 12V DC Flow (Open Flow) 16 liters/minute (3.5 GPM) Output (Also Listed) 16.3 liters/minute Pressure Switch Cuts in at 1.4 bar (20 PSI), cuts out at 2.8 bar (40 PSI) Cut-Off Pressure (Also Listed) 2.8 bar Self-Priming Up to 1.5 m (5 ft) vertical lift (input also states 7 ft) Maximum Current 6.5 A Recommended Fuse Size 15 A Dimensions (L x W x H) 250 mm x 105 mm x 100 mm Weight 2.98 kg (approx. 3.48 kg packed) Shipping Weight (Also Listed) 3.20 kg Operating Temperature Range -5 C to 40 C (input also states 0 C to 60 C) Maximum Inlet Pressure 30 PSI
Product Details
- Pump type: Pressure-controlled, self-priming, multi-diaphragm pump
- Operation: Integrated sealed pressure switch for on-demand operation
- Dry-run capability: Can run dry without damage (as stated in the input)
- Motor protection: Automatic thermal overload cut-out
- Bypass: Built-in bypass feature to reduce cycling and provide smoother flow
- Ports: Standard size snap-in port fittings; also described with 1/2 inch straight hose barb fittings in the input text
- Ingress protection: IPX6 (as stated in the input)
- Duty: Designed for continuous operation (as stated in the input)
- Availability note: Not available anymore; replaced by Jabsco Q401J-115S-3A
Features
- Delivers consistent pressure for multiple outlets with a 20 60 PSI switching range (20 PSI cut-in, 40 PSI cut-out)
- Quiet operation for noise-sensitive installations
- Snap-in ports support quick installation with 13 mm (1/2 inch) hose or Hep20 push-fit connectors
- Self-priming design supports flexible placement in the system layout
Materials and Construction (As Listed)
- Pump body: Polypropylene
- Pumphead and upper housing: Glass fiber reinforced polypropylene
- Diaphragm: Co-molded TPV diaphragm
- Check valves: EPDM check valves
- Additional construction notes from the input: Powder coated motor shell, cast aluminum endbells and lower housing, plastic housing to protect the motor from corrosion, and vibration dampening mounting feet
Important Notes
- Not submersible (as stated in the input)
- Do not use motor pump units for pumping gasoline or other flammable liquids (as stated in the input)
- Designed for use with fresh water only (as stated in the input)
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