Clemco Sentinel Media Metering Valve


The Sentinel valve is used on 2 to 20 cubic foot machines. It handles all media types and has an abrasive cut-off (ACS) feature. The ACS allows the operator to shut off the surface with air after blasting. The Sentinel is used on pneumatic and electric pressure-release systems and on pneumatic and electric pressure-hold systems
Model |
Standard Equipment on |
Stock No |
Manual or Pneumatic |
Remote Control Type |
Applications |
| Sentinel Valve | Classic machines with pressure-hold remotes or ACS: industrial blast machines. | 20508 | Pneumatic | Pressurehold and abrasive cutoff-systems | ACS applications: all media; use with abrasives coarser than 50 mesh; requires 50 to 70 psi to fully open plunger. |
Parts Breakdown

No |
Part No |
Description |
| - | 20508 | Sentinel Media Metering Valve |
| 1 | 20512 | Cylinder Cap |
| 2 | 03267 | Cap Screw, 3/8-NC x 1-1/2" |
| 3 | 01940 | Adaptor, 1/8" NPT |
| 4 | 20515 | Piston Cup |
| 5 | 20494 | Piston, shut-off |
| 6 | 20600 | Spring, 2"OD x 4-1/2" |
| 7 | 20514 | Upper Body |
| 8 | 03151 | Cap screw, 5/16-NC x 3/4" |
| 9 | 20495 | Wear sleeve |
| 10 | 20497 | Seat plate |
| 11 | 20499 | Metering Plate and Stem - Standard-use, coarser than 50-mesh |
| 11 | 21438 | Fine-mesh, urethane, 50-mesh & finder |
| 12 | 21021 | Packing gland |
| 13 | 01982 | Spring, 5/8" ID x 1-11/16" |
| 14 | 01791 | Close Nipple, 1-1/2" schedule 80 |
| 15 | 02440 | Inspection Plate |
| 16 | 19509 | Cap screw, 5/16 NC x 1-1/4" |
| 17 | 03457 | Cap screw 1/2-NC x 2-1/2" |
| 18 | 03511 | Nut, 1/2-NC hex head |
| 19 | 20498 | Metering Handle, Heavy Duty |
| 20 | 20246 | Pin, Valve Handle |
| 21 | 01717 | Close Nipple, 1-1/4" |
| 22 | 01818 | Wye, 1-1/4" Standard |
| 23 | 03080 | Set screw, 1/4-NC square head |
| 24 | 20511 | Lower body |
| 25 | 20513 | Flanged adaptor w/ inspection opening |
| 26 | 03311 | Nut, 3/8-NC hex head |
| 27 | 03213 | Nut, 5/16-NC wing |
| 28 | 20522 | Flanged adaptor w/o inspection opening |
| 29 | 20245 | Hitch pin |
| 30 | 01993 | Petcock |
| 31 | 02433 | Gauge unit |
| 32 | 02436 | Stud, gauge unit |
| 33 | 02431 | Spacer, handle bolt |
| 34 | 03053 | Cap screw, 1/4-NC x 1" |
| 35 | 03113 | Nut, 1/4-NC wing |
| 36 | 03116 | Washer, 1/4 flat |
| 37 | 01962 | Connector, 1/8" brass |
| 38 | 07658 | Valve, 3-way ACS switch |
| 39 | 07657 | Breather, muffler 1/8" |