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Clemco GritWizard Operational Instructions

Pneumatically operated abrasive metering valve
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© 2022 CLEMCO INDUSTRIES CORP.
One Cable Car Dr.
Washington, MO 63090
Phone (636) 239-4300
Fax (800) 726-7559
Email: info@clemcoindustries.com
www.clemcoindustries.com
GritWizard™
PNEUMATICALLY OPERATED
ABRASIVE METERING VALVE
O. M. 31199
DATE OF ISSUE:
REVISION:

Do not use this equipment
before READING this
MANUAL and
UNDERSTANDING its
contents.
These WARNINGS are
included for the health
and safety of the operator
and those in the
immediate vicinity. Failure
to read and understand
these warnings can result
in injury or death.
Electronic files include a
preface containing the
same important
information as in the
orange cover.
08/22

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Summary of Contents for Clemco GritWizard

  • Page 1 Failure to read and understand these warnings can result © 2022 CLEMCO INDUSTRIES CORP. One Cable Car Dr. in injury or death. Washington, MO 63090 Phone (636) 239-4300 Electronic files include a Fax (800) 726-7559 Email: info@clemcoindustries.com...
  • Page 2 Clemco manufactures. Users must contact each Abrasive Blasting. manufacturer and supplier of products used in the blast job for Clemco Industries Corp. One Cable Car Drive Washington MO 63090 warnings, information, training, and instruction relating to the Tel: 636 239-4300 — Fax: 800 726-7559 proper and safe use of their equipment.
  • Page 3 Numerous topics associated with the hazards of crystalline silica in silica blasting sand can be found on http:// osha.gov/. Clemco urges users of silica blasting sand to visit this website, and read and heed the information it contains.
  • Page 4  Exceeding the maximum working pressure. Clemco blast machines are built to ASME-code and carry a ‘U’ or ‘UM’ stamp, and National Board/serial number. Every machine is marked with its maximum working pressure. Never exceed the maximum working pressure limits of the blast machine.
  • Page 5 Always ground the machine to eliminate hazard of static shock. Install a blast machine screen to keep out foreign objects. Use a blast machine ©Clemco Industries Corp., Stock No. 20954P, 0692 Rev. F, 06/12 cover if left outdoors overnight. Never exceed the maximum working pressure of the vessel.

  • Page 6: Table Of Contents

    Turning the Metering Knob Does Not Change injury. Abrasive Flow ............. 5.7 Check Operation and Function of 4-Way Pilot Valve ... 5.8 Abrasive Bridging from Moisture ......... 5.9 © 2022 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 31199...

  • Page 7: Pressure Specifications

    1-1/4" or 1-1/2" (1-1/2" shown) Flanged Outlet Pipe Abrasive Metering Valve with Flanged Ball Valve Blast hose and pusher line connection. Stock No. 31158 and 31172 Some items removed or rotated for clarity. Figure 1 © 2022 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 31199...

  • Page 8: Abrasives

    1.6.2. Abrasive size: The GritWizard™ is designed media flow. to be used with most common abrasives ranging in sizes from 16-mesh to 220-mesh. However, the blast © 2022 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 31199...

  • Page 9: Installation

    GritWizard Without Shutoff Ball Valve GritWizard with Flanged (Shutoff) Ball Valve Couplings are shown for reference * Overall dimensions are approximate and vary depending on pipe fitting engagement Figure 2 © 2022 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 31199...
  • Page 10 * Rotate the (upper) flanged nipple or valve as needed to align the knob to a convenient position. ** Rotate the (lower) flanged outlet pipe 90 degrees in either direction as need to align the pipe with the pusher line. Figure 3 © 2022 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 31199...

  • Page 11: Connect Piping To The Metering Valve

    Users’ plumbing may differ, but connection are the same regardless of the controls. Figure 4 © 2022 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 31199...

  • Page 12: Connect Control Hoses

    3/16" x 18" Hose from ACS switch to fitting on 4-way adaptor plate. Existing twinline control hose to and from the RLX Control Handle. Blast Machine with Clemco Pressure-Hold Remote Controls Some items are rotated for clarity. Figure 5 © 2022 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 31199...

  • Page 13: Adjust Abrasive Flow

     Spring chamber and knob assembly.  Spool housing with 4-way pilot valve assembly  Main housing with flanged ball (shutoff) valve and outlet pipe. © 2022 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 31199...

  • Page 14: Spool Housing Assembly

    1/4-20 x 5/8" Socket Head Screw end threads of the screw and use a 1/8" hex bit socket Figure 8 and impact wrench to tighten the screw into the adjusting screw. © 2022 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 31199...
  • Page 15 2. Hold the housing securely and turn the plunger 12. Hold the housing securely and tighten the plunger by counterclockwise to remove it. turning it by hand as tight as you can get it. © 2022 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 31199...

  • Page 16: 4-Way Pilot Valve Assembly

    7/16" flange bolts that secures it to the housing. Note: If the ball valve or inlet pipe require service, they (it) must be removed from the machine. © 2022 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 31199...
  • Page 17 Use new O-rings 6. Make sure all fasteners are tight, as leaks will cause and valve seat gasket. the valve to malfunction. © 2022 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 31199...

  • Page 18: Main Housing Assembly

    Sleeve Remove blast-hose coupling piping. Insert Remove 4.8.2 Reconnect the control tubing to the 4- way valve Figure 14 and adaptor plate. © 2022 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 31199...

  • Page 19: Using Tube-Lock Fittings

    5.1.5 Obstruction in metering valve. Clear as follows: Figure 15  To avoid serious injury, depressurize the blast machine, lockout tagout compressed-air supply before continuing. © 2022 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 31199...

  • Page 20: Heavy Abrasive Flow

    Abrasive bridging in the blast machine. This is partially close and reopen. usually caused from using very fine abrasive, using spent abrasive, or from moist air. Refer to Section 5.9 for additional information on moisture. © 2022 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 31199...

  • Page 21: Turning The Metering Knob Does Not Change

    When the control handle is released, air should come from the air-assist valve and vent a short burst of air from the safety valve muffler. Replace the 4-way valve if it does not operate as noted. © 2022 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 31199...
  • Page 22 Washer, 3/4 flat, 3 required ...... 03815 c. Screw, 1/4-20 x 1" SS socked head ..(1) * Quantities of kit items are shown in parentheses 8 a, 8 c Figure 17 © 2022 CLEMCO INDUSTRIES CORP.  www.clemcoindustries.com  Manual No. 31199...

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