💧 Nut, Pentair Purex Whisperflo/IntelliFlo, Var. Filters, 1/4-20
Made by Purex, manufacturer part number 071406. 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 | Purex |
| Manufacturer part number | 071406 |
| Thread Pitch | 20 |
| Material | Stainless Steel |
| Nut Size | 1/4″ |
| Catalog description | Nut, Pentair Purex Whisperflo/IntelliFlo, Var. Filters, 1/4-20 |
✅ Listed for
- Pentair WhisperFlo VST Pump Replacement Parts
- Pentair IntelliFlo® VS+SVRS Pump Rpl Parts (After 6/2016)
- Pentair IntelliFlo VSF/2 VST/VS Rpl Parts (After 2018)
- Pentair WhisperFlo® High Performance Pool Pump
- Pentair Purex IntelliFlo® VF High Performance Pump
- Pentair IntelliFlo® VS (Before 2019)/VS+SVRS (Before 6/2016)
- Pentair UltraTemp Heat Pump
- Pentair ThermalFlo Titanium Heat Pump Replacement Parts
🔄 Cross-reference part numbers
These part numbers are listed as alternatives for this part.
| Brand | Part number |
|---|---|
| Pentair | 071406Z |
Exploded parts diagrams: This part is shown as item #21 on the Cartridge Filter, Pentair Purex CFW-120/180/315/405/560; item #13 on the DE Filter, Pentair/Purex, 800 Series; item #27 on the DE Filter, Pentair/Purex, SM/SMBW 2000 2024-2072, 1018-105; item #21 on the DE Filter, Pentair/Purex, SM/SMBW 4000, 4024-4060; item #11 on the Pentair SM & SMBW 2000 Series Backwash Valve; item #19 on the Pentair ThermalFlo Heat Pump Replacement Parts; and 2 other assemblies exploded parts diagrams.
🔧 Cartridge Filter, Pentair Purex CFW-120/180/315/405/560 – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| – | Tool, Socket, Quad-Side A/Solar Side B |
| – | Tool, Clamp Knob Socket, 4-Lobe, w/1/4" Socket Bit Adapter |
| – | Tool, Pentair Purex American Products, Tank Lid Opener |
| 23e | Cartridge, 93.5sqft, 3"ot, 3"ob, 7", 19" 4oz |
| 26d | 16-110-W025K23D |
| 23c | 16-110-W025K23C |
| 23b | 16-110-W025K23B |
| 23a | 16-110-W025K23A |
| 22 | Spacer, Pentair Purex CFW-405 |
| 21 | Nut,Pentair Purex Whisperflo/IntelliFlo,Var. Filters, 1/4-20 ◀ this part |
| 20 | 16-110-W025K20 |
| 19 | Washer, Pentair Purex Whisperflo/IntelliFlo, 1/4-20 |
| 18 | 16-110-W025K18 |
| 17 | Washer, Pentair PacFab, Pump/Filter, 5/16" |
| 16 | Wing Nut, Pentair Purex CFM/CF with 800/SMBW, 1/4-20 |
| 15 | 90 Elbow, 2" Slip x 2" Female Pipe Thread |
| 14 | 17-110-1400 |
| 13 | Drain Cap, Pentair Purex CFW, 3/4" |
| 12 | 16-110-W025K12 |
| 11 | O-Ring, Purex CFW/2000, 17-3/4" x 0.5",Tank Body,Generic |
| 10 | 16-110-W025K10 |
| 9 | 16-110-W025K9 |
| 8 | 16-110-W025K8 |
| 7 | 16-110-W025K7 |
| 6 | 16-110-W025K6 |
| 5 | Tee, Pentair Purex CFM/CF with SMBW, Brass, 1/4" |
| 4 | Nipple, Pentair Purex CF with SMB with 800, 1/4" |
| 3 | Air Relief Valve, Pentair Purex CFM/CF with SMBW |
| 2 | 16-110-W025K2 |
| 1 | 16-110-W025K1 |
🔧 Exploded diagram and parts
This part belongs to the Cartridge Filter, Pentair Purex CFW-120/180/315/405/560 assembly. Everything listed below is something we stock for it, and the numbers match the diagram.
Complete tools
| Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|
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Tool, Clamp Knob Socket, 4-Lobe, w/1/4" Socket Bit Adapter | MT-501 | 1 in stock | $35.79 | Add to cart |





















