💧 Square Ring, Pentair Sta-Rite High Rate, Adapter, O-435
Made by Sta-Rite, manufacturer part number 00B7027. 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 | Sta-Rite |
| Manufacturer part number | 00B7027 |
| Part Type | Square Ring |
| Cross Section | 5/16″ |
| Inside Diameter | 2-1/16″id |
| Outside Diameter | 2-3/8″od |
| Catalog description | Square Ring, Pentair Sta-Rite High Rate, Adapter, O-435 |
✅ Listed for
- Waterco/Baker Hydro HRV Series (Prior to 1984) Sand Filter
- Waterco/Baker Hydro HRV Series 1984-2009 Sand Filter
🔄 Cross-reference part numbers
These part numbers are listed as alternatives for this part.
| Brand | Part number |
|---|---|
| Generic | O-435 |
Exploded parts diagrams: This part is shown as item #8 on the Sta-Rite Swimquip HRP 36 Slide Valve Model WC212-137B; item #21 on the Sand Filter, StaRite, High Rate HRP36 (discontinued 1990) exploded parts diagrams.
🔧 Sta-Rite Swimquip HRP 36 Slide Valve Model WC212-137B – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| 26 | 27-102-1446 |
| 25 | Lock Pin, Pentair Sta-Rite HRP36, with Chain |
| 24 | Linkage, Pentair Sta-Rite HRP36 |
| 23 | Gasket, Sta-Rite/Pentair HRP36, Index Plate |
| 22 | Nut, Pentair Sta-Rite HRP36 Valve, 10-32 |
| 21 | Screw, Pentair Sta-Rite HRP36, 10-32 x 7/8" |
| 20 | Screw, Pentair Sta-Rite HRP36, 10-32 x 1-1/4" |
| 19 | Rivet Push Nut, Pentair Sta-Rite HRP36 |
| 18 | Rivet, Pentair Sta-Rite HRP36 Valve, 1/8" x 1" |
| 17 | Rivet, Pentair Sta-Rite HRP36 Valve, 1/8" x 11/16" |
| 16 | O-Ring, 1/2" ID, 1/16" Cross Section, Generic |
| 15 | O-Ring, 1-3/4" ID, 3/16" Cross Section, Generic |
| 14 | O-Ring Kit, Pentair Sta-Rite HRP 36 Slide Valve |
| 13 | Shaft Assembly, Waterco Baker Vertilever Valve |
| 12 | Index Plate, Pentair Sta-Rite HRP36 Valve |
| 11 | Handle, Pentair Sta-Rite HRP36 Valve |
| 8 | Square Ring, Pentair Sta-Rite High Rate, Adapter, O-435 ◀ this part |
| 7 | Bulkhead Adapter, Pentair Sta-Rite HRP36, with out O-Ring |
| 6 | Bottom Cap, Pentair Sta-Rite HRP36/Waterco Baker Vertilever |
| 5 | Adapter Ring, Pentair StaRite HRP36/Waterco Baker Vertilever |
| 4 | Top Body, Pentair Sta-Rite HRP36/Waterco Baker Vertilever |
| 3 | Bottom Body, Pentair Sta-Rite HRP36/Waterco Baker Vertilever |
| 2 | Center Body, Pentair Sta-Rite HRP36/Waterco Baker Vertilever |
| 1 | Body Assy, Pentair Sta-Rite HRP36/Waterco Baker Vertilever |
🔧 Exploded diagram and parts
This part belongs to the Sta-Rite Swimquip HRP 36 Slide Valve Model WC212-137B assembly. Everything listed below is something we stock for it, and the numbers match the diagram.
| No. | Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|---|
| 7 | ![]() |
Bulkhead Adapter, Waterco Baker Hydro HRV/Vertilever | 31B0077 | 5 in stock | $82.88 | Add to cart |
| 11 | ![]() |
Handle, Waterco Baker Vertilever Valve | 31B0009 | Available to order | $163.51 | |
| 13 | ![]() |
Piston Assembly, Waterco Baker Vertilever Valve | 31B0005 | 1 in stock | $82.54 | Add to cart |
| 23 | ![]() |
Gasket, Waterco Baker Vertilever Valve, Index Plate | 31B0015 | 5 in stock | $8.41 | Add to cart |
Parts that go with this
| Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|
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Tool, Pool Tool, O-Ring Pick | 134 | 18 in stock | $11.23 | Add to cart |
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O-Ring Chart, Aladdin | MG1 | 17 in stock | $83.58 | Add to cart |
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Square Ring, 2-1/8" ID, 2-7/16" OD, Generic, O-435 | O-435 | 13 in stock | $4.87 | Add to cart |
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Silicone, DOW 732, 3oz Tube, Clear | DC-732-CLR-3 | 186 in stock | $17.88 | Add to cart |
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Silicone, DOW 732, 10.1oz Cartridge, Clear | DC-732-CLR-10.3 | 43 in stock | $28.02 | Add to cart |
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Silicone Based Lubricant 1oz 00150 | 00150 | 343 in stock | $5.26 | Add to cart |


















