💧 Clamp Knob, Pentair PacFab, Pump/Filter, 5/16-18
Made by PacFab/Pentair, manufacturer part number 174882. It is listed for the equipment shown below, so check the model on your own unit against that list.
📏 Specifications
| Specification | Value |
|---|---|
| Brand | PacFab/Pentair |
| Manufacturer part number | 174882 |
| Catalog description | Clamp Knob, Pentair PacFab, Pump/Filter, 5/16-18 |
✅ Listed for
- Pentair PacFab Challenger High Flow In-Ground Pump
- Pentair PacFab Challenger High Pressure Pump
California Residents WARNING: Cancer and Reproductive Harm
Exploded parts diagrams: This part is shown as item #20 on the Cartridge Filter, Pentair PacFab, Mytilus 60, 80, 100; item #18 on the Cartridge Filter, Pentair PacFab, Mytilus B; item #22 on the Cartridge Filter, Pentair PacFab, Mytilus-FMY; item #27 on the Cartridge Filter, Pentair PacFab, Mitra; item #26 on the DE Filter, Pentair/PacFab, Star Polymeric ST35,40,50,80; item #7 on the DE Separation Tank, Pentair/PacFab, SEP48,96,144 Models, SS exploded parts diagrams.
🔧 Cartridge Filter, Pentair PacFab, Mytilus 60, 80, 100 – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| – | Bulkhead Wrench, Pentair PacFab Mytilus |
| 34 | Drain Assembly, Pentair PacFab Mytilus, 3/4" |
| 32 | Drain Plug, Pentair PacFab Mytilus, 3/4" |
| 31 | Pipe Assembly, Pentair PacFab Mytilus, Lower |
| 30 | Tank Base, Pentair PacFab Mytilus |
| 29 | 16-110-W011K29 |
| 28 | Adapter, Pentair PacFab, 2" |
| 27 | O-Ring, 2-3/8" ID, 3/16" Cross Section, Generic |
| 26 | Diffuser, Pentair PacFab Mytilus/Mitra, Bulkhead |
| 25 | 16-110-W011K25 |
| 24 | External Spacer, Pentair PacFab Mytilus/Mitra, 2", Bulkhead |
| 23 | O-Ring, 2-5/8" ID, 3/16" Cross Section, Generic |
| 22 | Internal Spacer, Pentair PacFab Mytilus/Mitra, 2", Bulkhead |
| 21 | 16-110-W011K21 |
| 20 | Clamp Knob, Pentair PacFab, Pump/Filter, 5/16-18 ◀ this part |
| 19 | Washer, Pentair PacFab, Pump/Filter, 5/16" |
| 17 | Bolt, Pentair PacFab, Pump/Filter, 5/16-18 x 4-1/4" |
| 16 | 16-110-W011K16 |
| 15 | 16-110-W011D15 |
| 14c | 16-110-W011K14C |
| 14b | 16-110-W011K14B |
| 14a | 16-110-W011K14A |
| 13 | Cartridge Adapter, Pentair PacFab Mytilus/Mitra, 2 required |
| 12 | 16-110-W011K12 |
| 11 | O-Ring, PentairPacFab Mytilus/Star, 12" Tank Body, O-99P |
| 10 | Strainer Assembly, Pentair PacFab Mytilus/Mitra |
| 9 | 16-110-W011K9 |
| 8 | Nut, Pentair PacFab, 3/8-16 |
| 6 | Washer, Pentair PacFab, 3/8" |
| 5 | O-Ring, 7/16" ID, 3/32" Cross Section, Generic |
| 4 | 16-110-W011K4 |
| 3 | Clamp Ring, Pentair PacFab Mytilus/ST |
| 2 | 16-110-W011K2 |
| 1 | 16-110-W011K1 |
🔧 Exploded diagram and parts
This part belongs to the Cartridge Filter, Pentair PacFab, Mytilus 60, 80, 100 assembly. Everything listed below is something we stock for it, and the numbers match the diagram.
Complete bulkhead wrenchs
| Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|
![]() |
Bulkhead Wrench, Pentair PacFab Mytilus | 197082 | 4 in stock | $57.51 |
Parts that go with this
| Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|
![]() |
Tool, Clamp Knob Socket, 4-Lobe, w/1/4" Socket Bit Adapter | MT-501 | 1 in stock | $35.79 | Add to cart |
























