💧 Screw, Val-Pak AquaFlo Dominator, Impeller
Made by Val-Pak, manufacturer part number 99730150. It is listed for the equipment shown below, so check the model on your own unit against that list. If your old part carries one of the cross-reference numbers further down, this is listed as its alternative.
📏 Specifications
| Specification | Value |
|---|---|
| Brand | Val-Pak |
| Manufacturer part number | 99730150 |
| Fastener Size | 1/4″ |
| Thread Pitch | 20 |
| Fastener Length | 3/4″ |
| Head Type | Truss – Slot |
| Material | Brass |
| Feature | Reverse Thread |
| Catalog description | Screw, Val-Pak AquaFlo Dominator, Impeller |
✅ Listed for
- Val-Pak/AquaFlo Dominator Medium & High Head Pump
🔄 Cross-reference part numbers
These part numbers are listed as alternatives for this part.
| Brand | Part number |
|---|---|
| Val-Pak | V40-428 |
Exploded parts diagram: This part is shown as item #21 on the AquaFlo Dominator Medium & High Head Pump, w/Copper Insert exploded parts diagram.
🔧 AquaFlo Dominator Medium & High Head Pump, w/Copper Insert – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| – | Go-Kit 36, Aqua Flo Dominator/C Series Pump, Pre-`95 |
| 32c | 34-402-W031K32C |
| 32b | 34-402-W031K32B |
| 32a | 34-402-W031K32A |
| 31 | Extension Shaft, Val-Pak AquaFlo Dominator, Shorty |
| 30 | Pump Stand, Val-Pak AquaFlo Dominator |
| 29 | Washer, AquaFlo Dominator, 3/8" |
| 28 | Bracket, Val-Pak AquaFlo Dominator, Seal Plate |
| 27 | 34-402-W031K27 |
| 26 | Screw, Val-Pak AquaFlo A/Dominator, Shaft Ext,1/4-20 x 5/16" |
| 25 | 34-402-W031K25 |
| 24 | 35-402-1216 |
| 23 | 34-402-W031K23 |
| 22b | 34-402-W031K22B |
| 22a | 34-402-W031K22A |
| 21 | Screw, Val-Pak AquaFlo Dominator, Impeller ◀ this part |
| 20 | 34-402-W031K20 |
| 19 | 34-402-W031K19 |
| 18 | Screw, Val-Pak AquaFlo Dominator, Diffuser, 8-32 x 1" |
| 17 | O-Ring, 10" ID, 1/4" Cross Section, Generic |
| 16 | Clamp Ring, Val-Pak AquaFlo Dominator, with Knob |
| 15 | Flange, Gecko AquaFlo Dominator, Volute, 2" |
| 14 | 34-402-W031K14 |
| 13 | Volute, Val-Pak AquaFlo Dominator |
| 12 | Bolt, Gecko AquaFlo Dominator/AC, 3/8-16 x 3/4" |
| 11 | 34-402-W031K11 |
| 10 | 34-402-W031K10 |
| 9 | Union Nut, 2", Pump Union |
| 8b | Tailpiece, 2" Slip x 1-1/2" Slip, Pump Union |
| 8a | Adapter, 2" Slip, Pump Union |
| 7 | O-Ring, 2-1/2" ID, 1/8" Cross Section, Generic |
| 6b | Pump Union, 2" Female Buttress Thread x 1-1/2" Slip, Qty 2 |
| 6a | Pump Union, 2"Female Buttress Threadx2" Slip, wht Quantity 2 |
| 5 | 34-402-W031K5 |
| 4 | 34-402-W031K4 |
| 3 | 34-402-W031K3 |
| 2 | 34-402-W031K2 |
| 1 | 34-402-W031K1 |
🔧 Exploded diagram and parts
This part belongs to the AquaFlo Dominator Medium & High Head Pump, w/Copper Insert assembly. Everything listed below is something we stock for it, and the numbers match the diagram.
Complete go-kit 36s
| Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|
![]() |
Go-Kit 36, Aqua Flo Dominator/C Series Pump, Pre-`95 | GO-KIT 36 | 1 in stock | $26.23 | Add to cart |
Parts that go with this
| Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|
![]() |
Silicone Based Lubricant 1oz 00150 | 00150 | 343 in stock | $5.26 | Add to cart |
![]() |
Silicone, DOW 732, 3oz Tube, Clear | DC-732-CLR-3 | 186 in stock | $17.88 | Add to cart |
![]() |
Tool, Pool Tool, Impeller Wrench, Closed | 127 | 13 in stock | $53.79 | Add to cart |


































