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Mueller| Product | Style | Ratings | Configuration |
|---|---|---|---|
| Heat Exchanger | Plate & Frame | 350 PSI / 410°F | C Frame |
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Note: the unit pictured is representative of the standard build and may not exactly depict p/n AT4P as shown on this page.
AT4P specifications
Description
AT4P is the P-series plate configuration of the Mueller Accu-Therm AT4 frame. It is a distinct part from the base AT4: the frame and port geometry are shared, but the plate pressing is not, so a P plate and a base plate are not interchangeable in a pack and their gaskets differ. The P plate is Mueller's high-pressure pressing, listed in the Accu-Therm I&O manual plate-code table. It carries a deeper draw and heavier support pattern than the base plate, which raises the differential pressure the pack will hold at the cost of a slightly higher pressure drop. Frame geometry is unchanged - 23" by 8" plates on 1" ports, packs from 12" - 22-7/8", roughly 15 - 50 sq ft of surface at about 0.5 square feet per plate, and water flow to 80 GPM. Gaskets attach by the Glue-In method. Frame styles offered: C Frame - compact cantilever, for space-limited installations. If you are matching a nameplate, the series letter is part of the part number and needs to carry through to any plate or gasket order.
Product Overview
Part Number:
AT4P
Series:
Accu-Therm
Brand:
Mueller
Codes & Compliance:
ASME Sec VIII Div 1, CRN, DNV
Also Written:
AT 4P, AT-04P, AT-4P, AT04P
Configuration & Size
Surface Area (Sq/Ft):
15 - 50 sq ft
Connection Type:
Studded port standard; lap-joint, weld-neck, ferrule, Victaulic
Frame Type:
C | C Frame (Cantilever)
Max Plate Count:
100 (est.)
Mounting:
Floor mounted frame
Passes:
Single pass standard; multi-pass available
Plate Height:
23"
Plate Pack Length Range:
12" - 22-7/8"
Plate Pattern:
P series, chevron H / V
Plate Thickness:
0.5 mm standard
Plate Width:
8"
Port Size:
1"
Wall Construction:
Single wall gasketed
Heat Transfer Area per Plate (Sq/Ft):
0.5 (est.)
Max Flow Rate (GPM):
80
Performance Rating:
U-value 1,500 BTU/hr-ft²-°F and greater
Performance Rating (Basis):
Clean water-to-water service; 1F to 3F approach. Actual duty depends on plate count, pattern, and fluid properties.
Materials of Construction
- Frame: Painted carbon steel; stainless optional. Zinc-plated compression bolts
- Gasket: NBR or EPDM standard; High-Temp EPDM, Viton/FKM, Butyl. FDA/3-A
- Gasket Attachment: Glue-In
- Plate: 316 SS standard; 304 SS, Titanium, Hastelloy C-276, SMO 254 optional
Rating
- Max Temperature: 410°F design; 302°F - 329°F gasket limit
- Max Working Pressure: 350 PSI design (high-pressure plate)
- Min Temperature: -20°F (MDMT 32°F typical)
- Test Pressure: 1.3 x MAWP
