Protek Service Manual

  1. Protek 3201 Service Manual
  2. Protek Service Manual Transmission
  3. Protek 3201 Service Manual

The Hand Diaphragm PrimerPump (DP) is an air pump that creates vacuum suction in a centrifugal pump priming line and pulls water up into the pump to prime it. These centrifugal pump primers are popular for their portability and simplicity.

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Protek Specialty Diaphragm Primer Models: DP5, DP7, and DP9

Protek Service Manual

The DP primer has a flapper check valve in the diaphragm and a disk check valve at the bottom of the unit. Air flows through the bottom check valve on the diaphragm up stroke then through the diaphragm valve on the down stroke. Diaphragm is actuated through a connecting rod eyebolt attached to a fulcrum handle bracket.

The Protek Specialty DIAPHRAGM PRIMER PUMPS are centrifugal pump primers, ideal for use in irrigation, firefighting, liquid extraction, and fluid distribution applications.

Compatible products : Centrifugal Pump, hand pump, skid.

Common names : hand pump primer, centrifugal pump primer, suction lift
primer, portable primer, centrifugal primer, centrifugal water pump primer, permanent primer.


Lightweight, portable aluminum alloy body.

Easily mounted on most centrifugal pumps.

Tough and durable rubber diaphragm.

Units have a drain valve.


    1. Attach mounting bracket to centrifugal pump or skid.
    2. Use non-collapsible hose or flexible tubing to connect primer suction inlet to pump.
    3. Install cut-off valve between the primer suction inlet and pump.
    4. Close cut-off valve immediately after priming.
    5. Make sure primer drain valve is closed.
    6. A cut-off valve should be used at the pump discharge to prevent air from being drawn through the discharge line while priming.

    • Remove any debris under the diaphragm after each use.
    • Clear all fluids from inside the unit after each use.

    If DP is not priming the pump, check the following:
    1. Make sure drain cock is closed.
    2. Inspect check valve for blockage and free movement.
    3. Check suction side for air leaks.
    4. Connecting hoses should be straight and clear of debris.
    5. Call Protek Technical Support for additional help.
  • Hand Diaphragm Primer – Parts

    D0055D0087D0062Lower Housing
    D0056D0088D0063Upper Housing
    D0107D0104Mounting Bracket
    D0093D0093D0093Handle Bracket
    D0303Diaphragm Plate (2 Req’d)
    D00031-½” Locknut
    D0127-AD0127-AD0127-AConnecting Rod Assembly
    D0050D0050D0051Fulcrum Eyebolt
    D0004D0004D0004Check Valve
    D0340D0340D0340Drain Valve
    D0347AD0347AD0347AClevis Pin Assembly
    X0D01X0D01X0D01Thumb Screw
    D0094-5Handle Pipe
    Handle W/ Bracket Assembly – #D0047
    D0093Handle Bracket (Includes 2 Fast Pins & Thumb Screw)
    D0095Handle with Grip Assembly (See Above Chart)
    OLD STYLE PARTS (Available Upon Request)
    Old Style DP9
    Old Style DP5 & DP7
    D0339Ball Check Valve
    D0300¾” MPT x ½” FPT Valve Bushing
    D0004Check Valve (Disk)
    D0054, D0058, D0061Diaphragm
    D0303 (DP5 only)Diaphragm Plate (2 req.)
    D0340Drain Valve
    X0D04¼-20 x 1″ Bolt (4 Req’d)
    X0D10³/8″ Flat Washer (2 req.)
    X0D11Jam Nut (2 Req.)
    X0D12¼-20 Self Locking Nut (4 Req.)
    DP52”, 3”, 4”
    DP74”, 5”, 6”
    DP96”, 8”, or Larger
    # of Strokes to Prime Through 25’ of 4” Suction# of Strokes to Prime Through 25’ of 6” Suction# of Strokes to Prime Through 25’ of 8” Suction
    PRIMER5” HG10” HG15” HG5” HG10” HG15” HG5” HG10” HG15” HG
    * Hg = Inches of Mercury
  • Primers

    Exhaust Primer

    Power Primer

  • Pumps

    Motorized Diaphragm Pump

  • Oilfield

    Oil Centrifuge Machine

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M-F 8:00 AM – 3:00 PM


(713) 667-6691


Protek 3201 Service Manual

(713) 667-7867


P.O. Box 965, Stafford, TX 77497


10315 Brighton Lane, Houston, TX 77031

Protek Service Manual Transmission

Protek Service Manual

Protek 3201 Service Manual

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