Clemco 20951 Manual Download

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SENTINEL MEDIA METERING VALVE

O.M. 20951

MC FILE NUMBER: 1064-0193
DATE OF ISSUE:

04/93

REVISION: D:

10/03

Do not proceed with
these instructions until
you have READ the
preface of this
MANUAL and YOU
UNDERSTAND its
contents. These
WARNINGS are
included for the health
and safety of the
operator and those in
the immediate vicinity.

Keep this manual for
future reference

WARNING

One Cable Car Dr.

Washington, MO 63090

Phone (636) 239-4300

Fax (636) 239-0788

Email: [email protected]

www.clemcoindustries.com

Summary of Contents for 20951

Page 1: ...the preface of this MANUAL and YOU UNDERSTAND its contents These WARNINGS are included for the health and safety of the operator and those in the immediate vicinity Keep this manual for future reference WARNING CLEMCO INDUSTRIES CORP One Cable Car Dr Washington MO 63090 Phone 636 239 4300 Fax 636 239 0788 Email info clemcoindustries com www clemcoindustries com ...

Page 2: ...ines components and accessories MUST be installed tested operated and maintained only by trained knowledgeable experienced users The products described in this material may be combined by the user in a variety of ways for purposes determined solely by the user No representations are intended or made as to the suitability or engineering balance of the combination of products determined by the user ...

Page 3: ...thing air hose Larger empty blast machines or ANY blast machine containing abrasive MUST be transported by mechanical lifting equipment AIRHOSE BLASTHOSE COUPLINGS ANDNOZZLEHOLDERS ALWAYS check to make sure air filter and respirator system hoses are NOT CONNECTED to in plant lines that contain nitrogen acetylene or any other non breathable gas NEVER use oxygen with air line respirators NEVER modif...

Page 4: ...ce as set forth below 1 Seller makes no warranty with respect to products used other than in accordance hereunder 2 On products seller manufactures seller warrants that all products are to be free from defects in workmanship and materials for a period of one year from date of shipment to buyer but no warranty is made that the products are fit for a particular purpose 3 On products which seller buy...

Page 5: ... HOSE IV 8 BLAST HOSE with ID 3 to 4 times the nozzle orifice Lines MUST be run AS STRAIGHT AS POSSIBLE from machine to work area with NO sharp bends Check DAILY for internal wear and external damage 9 HOSE COUPLINGS NOZZLE HOLDERS fitted SNUGLY to hose end and installed using PROPER coupling screws Coupling lugs MUST be snapped FIRMLY into locking position Gasket MUST form positive seal with safe...

Page 6: ... in death or serious injury 1 3 General Description 1 3 1 The Sentinel is a normally closed pneumatically operated media control valve The valve can be joined with a remote control system as shown in Figures 1 and 2 to stop the abrasive flow each time the blast machine is depressurized It can also be used with a pressure hold system to stop the abrasive flow while the machine remains under pressur...

Page 7: ...abrasive metering valve and necessary pipe fittings NOTE The following installation describes how to install the valve on a machine with minimal rotation clearance It is not necessary to disassemble the valve if rotates freely on the bottom of the machine WARNING 2 3 Remove the four cap screws holding the flanged adaptor to the valve assembly 2 4 Use a 1 1 2 close nipple to connect the flanged ada...

Page 8: ...manually operated blast machine such as in an automated system connect an air line between the IN port fitting and a tee installed before the machines air inlet valve Refer to the top illustration in Figure 2 2 8 2 5 If the Sentinel is connected to a remote system connect the air line from the IN port fitting to a controlled air line one that is on the controlled side of the remote control air lin...

Page 9: ...zle EXH port or down if installed on the Sentinel valve as shown in Figure 2 Abrasive flow is ON when the toggle is pointing back away from the nozzle CYL port up if it is as shown in Figure 2 3 3 2 By moving the switch to the OFF position the air supply to the abrasive metering valve is cut off closing the valve and stopping the abrasive flow This allows the operator to have air alone coming from...

Page 10: ...w is removed the spring will decompress forcing the shut off piston out of the body assembly 4 4 3 Insert the piston cup into the cylinder Do not allow the rubber lip of the cup to curl Use a dull edge to work the lip into the opening Once the cup is inserted push it to the bottom of the cylinder 4 2 3 Remove the shut off piston and spring 4 4 4 Place the spring into the upper valve body 4 2 4 Rem...

Page 11: ...sket in place 4 5 1 Place new O rings in the lower body and packing gland lubricate both O rings 4 6 10 Bolt the flanged adaptor and flange gasket onto the body assembly 4 5 2 Push the packing gland into the lower body until it bottoms out on the flange 4 5 3 Place a new shaft gasket over the metering plate stem and push the stem through the packing gland Hold the gland in place as the shaft is pu...

Page 12: ...around metering plate Disassemble valve to clean 5 4 Air leaks through relief hole in cylinder cap 5 4 1 Worn piston cup 5 5 Air leaks through relief hole in valve body spring chamber 5 5 1 Worn seals in wear sleeve or worn O ring between the valve body and wear sleeve 5 6 Abrasive flow decreases after a short period of time after blasting starts 5 6 1 Insufficient air supply causing control press...

Page 13: ...e mesh w o attached ACS 4 2 Gasket shaft with inspection plate 20608 one is for standard use coarse media has a 1 3 8 nominal OD 6 4 Service Kits one is for a urethane plate fine mesh has a 1 nominal OD Service kit upper segment Figure 6 22388 5 1 O ring lower body 1 ID 6 1 O ring Inspection plate 1 3 4 OD nom 22388 UPPER SEGMENT SERVICE KIT Item Qty Description 1 1 Washer rubber 2 1 O ring piston...

Page 14: ...2 NC hex head 03511 19 Metering handle heavy duty 20498 20 Pin valve handle 20246 21 Close nipple 1 1 4 01717 22 Wye 1 1 4 standard 01818 23 Washer 5 16 flat 03216 24 Lower body 20511 25 Flanged adaptor w inspection opening 20513 26 Nut 3 8 NC hex head 03311 27 Nut 5 16 NC wing 03213 28 Flanged adaptor w o inspection opening 20522 29 Hitch pin 20245 30 Petcock 01993 31 Gauge unit 02433 32 Stud gau...

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