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Genuine Mueller Parts
Plates and gaskets are model-specific and pattern-specific. Two plates that look identical across a workshop bench are frequently different parts, and fitting the wrong one produces a pack that will not seal and cannot be diagnosed by eye.
Identify from the nameplate. The unit serial number is the reliable route to the right part list. Photograph the nameplate and send it with the enquiry, and we can confirm plate pattern, gasket compound, count and hardware.
Gasket compounds. Nitrile, EPDM, silicone, Viton/FKM and butyl each cover a different temperature and chemistry window. Many models use snap-in gaskets, which remove the glue step and make a regasket far faster.
Frames and hardware. Compression bolts, guide rails, carrying bars, roller assemblies, port linings and connection adapters are all available. Custom frames can also be built to drop into an existing foundation from another manufacturer.
Part numbers. Every catalogued model, with the dimensions and ratings that separate them: Accu-Therm Replacement Gasket Part Numbers (30 part numbers), Accu-Therm Replacement Plate Part Numbers (15 part numbers) and Accu-Therm Frame Part Numbers (5 part numbers).
Typical Specification
- Plate patterns: Seven corrugation styles
- Plate materials: 304, 316 stainless, titanium, Hastelloy, Incoloy
- Gasket: nitrile (NBR): General water and oil duty
- Gasket: EPDM: Steam, hot water, caustic; the sanitary default
- Gasket: silicone: Wide temperature range
- Gasket: Viton / FKM: Hydrocarbons and many acids; poor in steam
- Gasket: butyl: Resin cured; specific chemical duty
- Attachment: Snap-in gaskets on many models; glued on others
- Hardware: Compression bolts, guide rails, carrying bars, port linings
- Identification: By unit serial number from the nameplate
| PRODUCT | CONSTRUCTION | MATERIALS | SUPPLY |
| Plates, Gaskets & Frames | Mueller factory built | 304 / 316 stainless | Authorized representative |
Plates, Gaskets & Frames
When to Regasket Rather Than Replace
Gaskets are the shortest-lived component in a plate exchanger and the cheapest to renew. Plates last far longer unless the chemistry is attacking them. If a pack is weeping but the plates are sound, a regasket is a fraction of the cost of a new unit.
Plate replacement becomes the answer when there is pitting, cracking at the port, or erosion at the inlet. At that point it is worth asking whether the plate material was right for the service in the first place, since a like-for-like replacement repeats the experiment.
Storage and Handling
Store spare plates flat and supported, and keep gaskets above freezing and out of sunlight. Extremely low temperature alters gasket properties, and UV degrades most elastomers.
Order gaskets close to when you will fit them rather than holding them for years, and note the compound on the shelf label so nobody fits the wrong one during a night shift.
Common FAQs
From the unit serial number on the nameplate. Measuring a plate is unreliable because visually similar plates from different families are not interchangeable. A photograph of the nameplate is usually all we need to produce a parts list.
Match it to the service temperature and chemistry, not to what was in there last. EPDM for steam, hot water and caustic. Nitrile for general water and oil. Viton for hydrocarbons and acids but not steam. If the duty has changed since the unit was bought, the compound may need to change too.
It varies enormously with temperature, chemistry and how many times the pack is opened. Treat them as a scheduled consumable rather than waiting for a leak, and always replace them when the pack is opened rather than reusing.
Frequently, yes. Custom frames can be built to land on an existing foundation and pipe run, eliminating concrete and piping modifications. Send the existing footprint, connection locations and duty and we will tell you whether it is realistic.
Related
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