"Exhaust gas economizer:

Maker: Aalborg Industries

Type: AV-4 Boiler

Steam dump valve actuator:

AV-4 Boiler instruction manual, Steam dump equipment, PNEUMATIC ACTUATOR, TYPE DP, Page 49-17 / 39, Figure 1, Table 1 (required spare）

Boilers instruction manual, Steam Water System - MISSION OL, Data sheet 6050000325 (Pneumatic control valve, DN 40, PN 40, with DP

actuator and I/P positioner).

Technical data, actuator:

Control signal: 0.8 – 2.4 bar

Max. permissible closing pressure: 32 bar

Diaphragm area: 400 cm²

Max. air supply pressure: 6 bar

Action: Spring closes on air failure" ROLLING DIAPHRAGM AALBORG INDUSTRIES.NA.1

Leyland Man, Spare Parts