SWEP B10TS

It is cleaned in place by circulating a cleaning solution through the fouled side, preferably in the reverse of the normal flow direction and at a higher velocity than the duty flow, then rinsing thoroughly.

The All-Stainless construction widens the choice of chemistry, because there is no copper braze for the cleaner to attack, but the solution still has to suit 316 - chloride-based acids are out. On pharmaceutical and deionized water duties, agree the cleaning agent and the rinse standard before the unit goes in. Fit isolation valves and cleaning tees at installation; adding them afterward means cutting pipe. See Cleaning in Place.

Material and purpose. The B10TS and B10T share the 289 x 119 mm outline and the 39.63 GPM ceiling, but the B10T is 304 stainless with copper braze and the B10TS is 316 with stainless braze. The V10T is on the same outline too, in 316/316L with copper braze, and is SWEP's most compact evaporator - a refrigerant-duty model.

The B20 is a different shape altogether: 324 x 94 mm, 42.71 GPM, copper brazed, a single-circuit unit aimed at heat pumps. None of the three is a substitute where the fluid rules out copper.

Port centres, plate count and connections. The B10TS is 289 x 119 mm overall with ports on 243 x 72 mm centres (9.57 x 2.83 in). Those centres are fixed for the frame, so if they match, the four pipes will meet the four ports.

Depth is the dimension that changes. Part numbers on file run from 10 to 80 plates, and an 80-plate unit is far deeper than a 10-plate one, so a replacement with a different count needs the back clearance checked and may need the rear pipe supports moved.

The part numbers on file all carry four 1" & 22U combo connections. The ampersand means one fitting accepts two joining methods: a 1 in thread, or a soldered or brazed tube in the 22U socket, which is a universal size taking both 7/8 in and 22 mm pipe.

That covers most small-bore installations in either unit system. The thing to watch on an All-Stainless unit is the joint itself: a copper-free exchanger piped with copper tube or brass fittings on an ammonia or deionized water loop has put the copper back into the system. Keep the adjoining pipework stainless on those duties.

SWEP publishes PED, UL and KHK for the B10TS. PED is the European pressure equipment route, UL the North American listing, and KHK the Japanese high-pressure gas approval.

For an installation, what matters is the approval and rating stamped on the unit you receive, not the list on the datasheet. If the inspector or the plant specification asks for a particular approval, state it in the quote request so the unit is supplied with it. The catalogued units are S pressure class, a category of 31 bar at 155 C; the stamped figure on the nameplate governs. Approvals and Certifications explains what each mark covers.

Both exist. Every part number on file is single-pass (/1P), while SWEP's example designation for the model is a two-pass build, B10TSH/2P-SPS-S.

Two passes send the fluid across the plate pack twice, which lengthens the thermal path: a closer approach or a larger temperature change from the same footprint, paid for in pressure drop. It also changes the port layout, so a 2P unit cannot be swapped for a 1P unit on existing pipework without repiping. Read the pass code on the nameplate before ordering, and give it in the quote request.

These models are catalogued alongside the B10TS. Each has its own page with its dimensions, materials and part numbers.

SWEP B10T - A high plate-count small frame - 140 plates in a 289 mm envelope.

SWEP V10T - SWEP's most compact evaporator, 289 x 119 mm, copper-brazed 316/316L, up to 141 plates.

SWEP B20 - Ultra-compact single-circuit brazed plate heat exchanger aimed at heat pumps, to 42.71 GPM.