Product Description
Maintenance Kit for Welch 2052B-01, 2052, 2054, MP1201E, MPC1201E, MP901Z, MPC901Z, MP601T, MPC601T, MP301V, MPC301V - 402042 - OEM Equivalent
VPS product code: 402042
Overview
This maintenance kit supports planned service or rebuild work on the listed Welch 2052B-01, 2052, 2054, MP1201E, MPC1201E, MP901Z, MPC901Z, MP601T, MPC601T, MP301V, MPC301V equipment. Match VPS product code 402042 and the complete pump model before ordering.
Compatible Pump Models
- 2052B-01
- 2052
- 2054
- MP1201E
- MPC1201E
- MP901Z
- MPC901Z
- MP601T
- MPC601T
- MP301V
- MPC301V
Fit check: Match the complete nameplate model, suffix, serial range where applicable, and product code before ordering.
Product Details
| Field | Details |
|---|---|
| Product Type | Maintenance Kit |
| VPS Product Code / SKU | 402042 |
| Compatible Manufacturer | Welch |
| OEM Status | OEM Equivalent |
What This Kit Includes
- O-Rings & Seals: 2 verified BOM line items
Complete Bill of Materials
| Part Number | Description | Quantity |
|---|---|---|
| 400656 | Peek Welch MP MPC Valve, Part# 400656 | 8 |
| 829250 | 25 x 2 mm - Viton O-ring, Part# 829250 | 8 |
| 829217 | 12 x 2mm - EPDM O-ring, Part# 829217 | 15 |
| 400732 | Welch Diaphragm, PTFE, Part# 400732 | 4 |
Recommended Oil
Use the pump manufacturer’s approved lubricant for the exact model and process. Confirm viscosity, chemistry, seal compatibility, and current oil before changing products. Open the VPS Vacuum Pump Oil Cross Reference Chart.
When Should This Be Replaced / Rebuilt
Use this kit during the service level and interval specified for the pump, or after inspection confirms that a rebuild is required. Follow the model-specific service manual and verify the BOM before disassembly.
Resources
- Welch Vacuum Pump Complete Resource Center
- VPS Schematics, Manuals & Technical Library
- Vacuum Pump Oil Cross Reference Chart
Why Buy From Vacuum Pump Supply
- Vacuum pump specialists since 2006
- More than 15,000 vacuum pump products
- OEM and OEM-equivalent repair solutions
- Support for current and legacy equipment
FAQ
Is this a genuine OEM product?
No. This is a Vacuum Pump Supply OEM-equivalent replacement product; the compatible manufacturer name identifies fitment only.
How do I confirm the correct part?
Compare VPS product code 402042 and the complete pump model with the equipment nameplate and service documentation. Email Vacuum Pump Supply / request help when the model, suffix, or serial range is uncertain.
Are the kit contents listed?
Yes. The verified source quantities are shown in the Complete Bill of Materials table on this page.
Need help confirming fit?
Send the pump model, serial number, nameplate photo, and this VPS product code. We will help verify the service item.
OEM-Equivalent Product
This Vacuum Pump Supply product is an OEM-equivalent replacement for the listed Welch pump models.
