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Quotes - Engineering - SalesL-Line Brazed Plate Part Numbers
Brazed Plate Part Numbers
The L-Line runs from the LA14, which fits in one hand, to the LF700. Two things separate the frames: the plate size, which sets the connection and the flow the unit will pass, and the maximum plate count, which sets how much surface you can put behind it.
Bare frames and plate-count strings. LA14 names the frame. LA14-50 names that frame with fifty plates in it. Mueller publishes the model table rather than purchasable SKUs, so the frame-plus-count strings are the designations that actually circulate.
Copper or nickel. Copper brazing is standard and suits water, glycol and most refrigerants. Nickel is for ammonia and for media that attack copper — see the nickel brazed plate page.
Common to the Whole Series
Configuration
- Plate Pattern: Herringbone (chevron) embossed
- Wall Construction: Brazed, single wall
Materials
- Connections: Stainless - MPT, FPT, solder, Victaulic, or flanged
- Braze Material: Copper standard; nickel or stainless braze available
- Plate Material: 316L stainless steel
Ratings
- Maximum Operating Temperature: 446°F copper braze; 392°F stainless braze
- Minimum Operating Temperature: -320°F (-150°F in US literature)
- Test Pressure: 1.3 x MAWP
Performance
- Performance Rating: Capacity scales with plate count; consult a rated selection
- Performance Rating (Basis): Estimate. Duty depends on plate count, flow rates, and approach temperature; verify with a selection program.
Certification
- Codes and Compliance: ASME UM available, CRN, PED
Manufacture
- Brand: Mueller
L-Line Brazed Plate Part Numbers
No Gaskets Means No Opening
A brazed unit is one sealed assembly. That is what makes it compact and what makes it cheap, and it is also why it cannot be cleaned mechanically or expanded later.
The consequences are practical. Put a strainer upstream. Keep the water clean rather than planning to clean the unit. And size the frame for where the duty is going, because adding plates later is not an option the way it is on a gasketed frame.
Where a Brazed Unit Beats a Gasketed One
Small, clean, high-pressure duty. Domestic hot water, boiler isolation, heat pump loops, oil cooling on a hydraulic pack, refrigerant condensers and evaporators. Anywhere the duty is settled and the fluids are clean, a brazed unit does the job in a fraction of the space and cost.
Where the fluid fouls, where the duty may grow, or where an inspection regime requires the unit to open, a gasketed frame is the right answer instead.
Part Numbers
| Model | Plate Range | Port | Max Flow | Max Working Pressure | Height | Width | Ship Weight |
|---|---|---|---|---|---|---|---|
| LA14 | 10 - 60 | 3/4" | 30 GPM | 435 PSI | 8.0" | 3.2" | 14.0 lbs |
| LA22 | 10 - 60 | 3/4" | 30 GPM | 435 PSI | 11.8" | 3.2" | 14.0 lbs |
| LA34 | 10 - 60 | 3/4" | 30 GPM | 435 PSI | 18.5" | 3.2" | 14.0 lbs |
| LB31 | 10 - 150 | 1" | 50 GPM | 435 PSI | 11.3" | 4.8" | 32.0 lbs |
| LB47 | 10 - 150 | 1" | 50 GPM | 435 PSI | 16.4" | 4.8" | 32.0 lbs |
| LB60 | 10 - 150 | 1" | 50 GPM | 435 PSI | 21.2" | 4.8" | 32.0 lbs |
| LM110 | 10 - 200 | 2" | 200 GPM | 362 PSI | 24.4" | 7.5" | 42.0 lbs |
| LC110 | 10 - 200 | 2-1/2" | 300 GPM | 362 PSI | 18.4" | 10.2" | 42.0 lbs |
| LC170 | 10 - 200 | 2-1/2" | 300 GPM | 362 PSI | 27.1" | 10.2" | 42.0 lbs |
| LD235 | 10 - 280 | 3" | 450 GPM | 362 PSI | 31.0" | 12.2" | 58.0 lbs |
| LE400 | 10 - 400 | 4" | 800 GPM | 362 PSI | 39.7" | 15.2" | 82.0 lbs |
| LF700 | 10 - 400 | 6" | 1800 GPM | 232 PSI | 52.24" | 21.73" | 82.0 lbs |
| LA14-20 | 20 | 3/4" | 30 GPM | 435 PSI | 8.0" | 3.2" | 6.0 lbs |
| LA14-50 | 50 | 3/4" | 30 GPM | 435 PSI | 8.0" | 3.2" | 12.0 lbs |
| LB31-10 | 10 | 1" | 50 GPM | 435 PSI | 11.3" | 4.8" | 4.0 lbs |
| LB31-30 | 30 | 1" | 50 GPM | 435 PSI | 11.3" | 4.8" | 8.0 lbs |
| LB31-50 | 50 | 1" | 50 GPM | 435 PSI | 11.3" | 4.8" | 12.0 lbs |
| LB31-110 | 110 | 1" | 50 GPM | 435 PSI | 11.3" | 4.8" | 24.0 lbs |
| LC110-30 | 30 | 2-1/2" | 300 GPM | 362 PSI | 18.4" | 10.2" | 8.0 lbs |
| LC110-40 | 40 | 2-1/2" | 300 GPM | 362 PSI | 18.4" | 10.2" | 10.0 lbs |
| LC110-130 | 130 | 2-1/2" | 300 GPM | 362 PSI | 18.4" | 10.2" | 28.0 lbs |
21 part numbers.
Ship Weight: est., base plus per-plate mass
Common FAQs
It is a frame size designation within the L-Line, not a plate count and not a capacity. The plate count is the suffix where one is present: LB31-50 is an LB31 with fifty plates.
Not practically. There is nothing to open and nothing to reseal. A failed brazed unit is replaced.
Nickel. Ammonia attacks copper.
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