Bell & Gossett Shell and Tube Heat Exchanger. Model: SU-104-2. S/N: 89R78807-04-3. Nat’l Bd: 11192. Heat transfer flow rate: 50 gpm. Heating surface area: 56 sq. ft. 2-Pass heat exchanger. Shell side: MAWP: 150 psi @ 375 °F. Shell side MDMT: -20 °F @ 150 psi. Tube side MAWP: 125 psi @ 375 °F. Tube side MDMT: -20 °F @ 125 psi. The “SU” Heat Exchanger is an instantaneous type, designed to heat liquids with steam. No space-wasting, expensive storage tank is needed. Temperature regulator. Fisher Controls Actuator, Size 34, pressure units: psi, maximum allow supply: 90 psi, operation range: 90, travel: 3/4 in., bench set: 9 to 15, body type: GS, size: 2, stem/PWS: 316SST/316SST, rating: 250/100 °F, port size: 2. Conbraco Inc. Steam Relief Valve, S/N: 29.701-38, 5507 lbs/hr. Hoffman Specialty Float & Thermostatic Trap, Model: 592, maximum pressure: 125 psig, size: 2 in. NPT. Inlet: (1) 3 in. dia., 4-bolt flange. Outlets: (1) 3 in. dia., 4-bolt flange, (1) 2 in. dia. NPT (female) port, (1) 1-1/2 in. dia. ACME threaded (male) port. Overall dimensions: 98 in. L x 29 in. W x 85 in. H. (ACN45).