B80SHx60/1P-SPS-M 4x1 1/4"&28U

B80SHx60/1P-SPS-M 4x1 1/4"&28U designates a SWEP B80S brazed plate heat exchanger with 60 plates in the pack. The H plate is the obtuse chevron: it gives the most heat transfer per plate and the most pressure drop, so it suits duties where approach temperature matters more than pump head. Reading the string: /1P is single pass; -SPS is 316 stainless steel plates joined with stainless, copper free. The closing M is the pressure class: up to 45 bar at 135 C, fatigue tested. The connection field reads 4x1 1/4"&28U. The B80S plate pack measures 526 x 119 mm (20.71 x 4.69 in) on 470 x 63 mm port centres, and by SWEP's published weight formula a 60-plate unit comes to about 16.0 kg (35.4 lb) dry. Maximum flow for the frame is 17 m3/h (74.85 GPM); that is a ceiling for the ports, not a duty point. Use this designation as the reference on a quote request; nothing more is needed until the duty itself changes.