Every Oilgear piston pump carries an identification nameplate on the housing with a type code and a serial number. The type code is not decoration: each field in it changes which parts fit. Rotation decides the valve plate and the swashblock. Port arrangement decides the valve plate kit. Shaft code decides the shaft and bearing kit. Seal letter decides the seal kit. Get one field wrong and the parts will not fit.
This page shows how to read the code on each Oilgear family, and which fields matter when you are ordering parts. Once you have decoded yours, the Oilgear parts catalogs carry the factory exploded view and every service kit number for your frame.
The six fields that decide which parts you need
| Field | Where it sits | What it changes |
|---|---|---|
| Seal material | Field 7 on PVWJ, PVM and PVG | Decides the seal kit outright. PVWJ defaults to V (Viton); PVM defaults to B (Nitrile); PVG defaults to V (Viton). Ordering the wrong material is the single most common Oilgear parts mistake. |
| Rotation | L or R | Left hand (CCW) and right hand (CW) pumps use different valve plates and different swashblock kits. The saddle bearings swap positions too. |
| Valve plate / port type | S, G, D or T | Rear, side, thru-shaft side, or top/bottom. Each has its own valve plate kit number, and on PVWJ not every combination exists for every size. |
| Shaft code | Y, B, S, C, D, K, L or R | Sets the shaft and bearing kit. The same letter means a different shaft on each frame size, so the frame has to be right before the letter means anything. |
| Design series | A1, A2, B1, B2, F1 | Oilgear changed parts between design series. On PVM the series letters do not follow frame order at all: B1 is the A frame. |
| Serial number | stamped beside the type code | Some parts changed mid-production run. When a kit is listed as differing before or after a serial break, this is what settles it. |
PVWJ / PFWJ type code Oilgear bulletin 47085A
Example type code
PVWJ-098-A1UV-LDFY-P-1NN-NN
| Unit size | Displacement / frame | Design series |
|---|---|---|
| 011 | 10.8 cc/rev | A |
| 014 | 14.1 cc/rev | A |
| 022 | 22.1 cc/rev | A |
| 025 | 25.4 cc/rev | B |
| 034 | 33.8 cc/rev | B |
| 046 | 46.4 cc/rev | B |
| 064 | 63.6 cc/rev | C |
| 076 | 76.5 cc/rev | C |
| 098 | 98.3 cc/rev | C |
| 130 | 130.2 cc/rev | C |
| Seal code | Seal material (this picks the seal kit) |
|---|---|
| V | Viton |
| P | EPR |
| Rotation code | Direction, viewed from the shaft end |
|---|---|
| L | Left hand, CCW |
| R | Right hand, CW |
| Port / valve plate code | Arrangement |
|---|---|
| S | Rear ported |
| G | Side ported |
| D | Thru-shaft with side ports |
| T | Top/bottom ported |
| Shaft code | 011/014/022 | 025/034/046 | 064/076/098/130 |
|---|---|---|---|
| Y | .75in keyed | .875in keyed | 1.25in keyed |
| B | .875in keyed | 1.00in keyed | |
| S | SAE A spline | SAE B spline | SAE C spline |
| C | SAE B spline | SAE B-B spline | |
| D | SAE A spline (industrial) | SAE B spline (industrial) | SAE C spline (industrial) |
A1 is current for every displacement.
PVM type code Oilgear bulletin 47070-C
Example type code
PVM-011-B1UB-LDA-B-P-1NN/J-SN-AN-05
| Unit size | Displacement / frame | Design series |
|---|---|---|
| 011 | A frame | B1 |
| 014 | A frame | B1 |
| 022 | A frame | B1 |
| 025 | B frame | A1 |
| 034 | B frame | A1 |
| 046 | B frame | A1 |
| 065 | B frame | A1 |
| 075 | B frame | A1 |
| 064 | C frame | A2 |
| 076 | C frame | A2 |
| 098 | C frame | A2 |
| 130 | C frame | A2 |
| Seal code | Seal material (this picks the seal kit) |
|---|---|
| B | Nitrile (standard) |
| V | Viton |
| P | EPDM with PTFE shaft seal |
| Rotation code | Direction, viewed from the shaft end |
|---|---|
| L | Left hand, CCW |
| R | Right hand, CW |
| Port / valve plate code | Arrangement |
|---|---|
| S | Rear ported |
| G | Side ported |
| D | Thru-shaft with side ports |
| Shaft code | 011/014/022 | 025/034/046 | 065/075 | 064/076/098/130 |
|---|---|---|---|---|
| Y | .75in keyed | .875in keyed | 1.00in keyed | 1.25in keyed |
| B | .875in keyed | 1.00in keyed | 1.25in keyed | 1.50in keyed |
| S | SAE A spline | SAE B spline | SAE B spline | SAE C spline |
| C | SAE B spline | SAE B-B spline | SAE B-B spline | SAE C-C spline |
| D | SAE B-B spline Cl 5 | SAE C-C spline Cl 5 | ||
| L | SAE B spline Cl 5 |
Read this one carefully: on PVM the design series does NOT run in frame order. B1 is the A frame, A1 is the B frame and A2 is the C frame.
PVG type code Oilgear bulletin 47019-J
Example type code
PVG-075-F1UV-LDF-Y-P-1NN-SN-AN
| Unit size | Displacement / frame | Design series |
|---|---|---|
| 048 | 48 ml/rev | |
| 065 | 65 ml/rev | |
| 075 | 75 ml/rev | |
| 100 | 100 ml/rev | |
| 130 | 130 ml/rev | |
| 150 | 150 ml/rev |
| Seal code | Seal material (this picks the seal kit) |
|---|---|
| V | Viton (standard) |
| B | Buna nitrile |
| P | EPR |
| Rotation code | Direction, viewed from the shaft end |
|---|---|
| L | Left hand, CCW |
| R | Right hand, CW |
| Port / valve plate code | Arrangement |
|---|---|
| S | Rear ported |
| G | Side ported |
| D | Side ported, thru-shaft |
| Shaft code | 048 / 065 / 075 |
|---|---|
| Y | 25-1, SAE B-B keyed |
| S | 25-4, SAE B-B spline |
| K | 22-4, SAE B spline |
| B | 32-1, SAE C keyed |
| R | 32-4, SAE C spline |
F1 is the current design series. The later F1U design has its own parts catalog on this site.
PVWW, PVWH and PVW type code Oilgear bulletin 47013 / 47015
Example type code
PVWW-45-L-DF-S-CN-SN-TK
| Unit size | Displacement / frame | Design series |
|---|---|---|
| 06 | legacy frame | |
| 10 | legacy frame | |
| 15 | legacy frame | |
| 20 | legacy frame | |
| 34 | legacy frame | |
| 45 | legacy frame | |
| 60 | legacy frame |
| Seal code | Seal material (this picks the seal kit) |
|---|---|
| Set by the seal kit part number, not by a code letter; see the Kit No. 77 table on the PVWH catalog page |
| Rotation code | Direction, viewed from the shaft end |
|---|---|
| L | Left hand, CCW |
| R | Right hand, CW |
| Port / valve plate code | Arrangement |
|---|---|
| SA | Rear location, SAE straight thread |
| DA | Side location, SAE straight thread (sizes 06, 10) |
| DF | Side location, SAE flange |
| Shaft code | all sizes |
|---|---|
| Y | Keyed, SAE |
| S | Splined, SAE, mobile |
| D | Splined, SAE, industrial |
| B | Keyed, belt driven, sizes 06 thru 20 |
| C | Splined, belt driven, sizes 06 thru 20 |
PVWH and PVW run 150-300 SSU petroleum oil. PVWW is the water-containing-fluid version for 27-30 SSU fluids such as water glycol, and needs a flooded inlet with no inlet filter.
PVK type code Oilgear bulletin 47025-E
Example type code
PVK-270-B1UV-LDFY-E-RNN-SN-GS
| Unit size | Displacement / frame | Design series |
|---|---|---|
| 140 | 140 frame | |
| 270 | 270 frame | |
| 370 | 370 frame |
| Seal code | Seal material (this picks the seal kit) |
|---|---|
| V | Viton |
| Rotation code | Direction, viewed from the shaft end |
|---|---|
| L | Left hand, CCW |
| R | Right hand, CW |
| Port / valve plate code | Arrangement |
|---|---|
| D | Side ported |
| F | Flange connection |
| Shaft code | 140 / 270 / 370 |
|---|---|
| Y | Keyed |
| S | Splined |
A1 and B1 design series. PFK is the fixed-displacement version of the same pump.
Still not sure which pump you have?
- Photograph the nameplate, the whole plate, in focus.
- Note the port arrangement (rear, side, top/bottom) and whether the pump has a thru-shaft with a cover plate or an adapter on the back.
- Note the shaft: keyed or splined, and its diameter or tooth count.
- Tell us the fluid: petroleum oil, water glycol or phosphate ester.
Send that to info@restopower.com and we will identify it and quote the parts.
Open the parts catalog for your frame: exploded views, every numbered part, and the Oilgear service kit numbers.
Oilgear parts catalogs →