Diesel Double Diaphragm Pumps Specs & manuals ↓
MSP DD-4S — 4-in Double-Diaphragm Pump
A 4-inch diesel double-diaphragm trailer pump with gray diaphragms and a 10 psi maximum diaphragm operating limit. The factory technical sheet lists 450 gallons per minute at the reference engine speed and solids passage up to 3.5 inches.
Estimated equipment rental only. Delivery, taxes and applicable fees quoted separately. Final pricing confirmed with dispatch.
Specifications
Equipment
- Manufacturer
- Myers-Seth Pumps (MSP)
- Model
- DD-4S / gray diaphragms
Selected configuration and limits
- Model
- DD-4S
- Diaphragm configuration
- Gray diaphragms; selected factory technical-sheet configuration
- Maximum diaphragm operating pressure
- 10 psi; factory operating limit
- Suction / discharge
- 4 in / 4 in
- Maximum flow
- 450 US gal/min at 1,800 engine rpm; separate from pressure limit
- Solids passage
- 3.5 in
- Maximum suction lift
- 28 ft
- Air-handling capacity
- 40 cfm
- Maximum operating liquid temperature
- 160°F / 71.1°C
- Pump speed
- 60 rpm at gearbox; 1,800 rpm engine operating reference
Engine and trailer
- Engine
- Hatz 1B50E
- Engine type
- Single-cylinder, air-cooled diesel
- Published engine output
- 6.4 hp at 2,000 rpm
- Fuel tank
- 41 US gal
- Published package weight
- 1,780 lb; dry/wet basis not specified
- Overall dimensions
- 108 × 67 × 60.375 in; L × W × H
- Mounting
- Open trailer
- Engine protection
- Low oil-pressure shutdown
- Monitoring
- Instrument panel with hour meter
Pump construction
- Pump housing
- A36 steel
- Flapper valves
- Weighted full-flow reinforced rubber
- Suction / discharge valve seats
- 3/8-in stainless steel plate
- Lifting
- Heavy-duty single-point lifting bale
- Securing
- Four heavy-duty tie-down points
- Fuel access
- Lockable cap and fuel gauge
Higher-pressure comparison
- Larger double-diaphragm alternative
- MSP DD-8; 8-in suction and discharge ports
- DD-8 operating pressure
- 40 psi maximum working pressure; distinct larger package
- Connection difference
- DD-8 has larger ports; no connection equivalence or adapter supply is implied
Equipment Details
Capabilities & Features
- A double-diaphragm mechanism handles mixed liquid, air and solids.
- Pushrod covers and accessible cleanouts support field servicing.
- For a higher-pressure comparison, the DD-8 has an independently specified 40 psi working limit and larger eight-inch ports.
