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General| Brand | Farris Engineering |
|---|---|
| Model | 1800 Series |
| Category | Control Unit |
| Language | English |
Procedure for dismantling Series 1850, 1852, 1855, and 1856M models using specific figures.
Dismantling instructions for Series 1890, 1892, 1895, and 1896M models with reference to Fig. 2.4.
Instructions for removing and reassembling the open lifting lever assembly, referencing Fig. 3.1.
Details on disassembling and reassembling packed lifting lever assemblies, covering different constructions.
General steps for lapping valve seats and discs, including preparation and measurement.
Specific thickness adjustments for blowdown rings and guides based on valve series (1850/55/56M and 1890/95/96M).
Final cleaning of parts after lapping and checks for critical seat dimensions before reassembly.
Assembly steps for Series 1850, 1852, 1855, and 1856M valves, including lubrication and specific seat types.
Assembly steps for Series 1890, 1892, 1895, and 1896 valves, covering metal and O-ring seat constructions.
Steps to set and adjust valve pressure, including spring adjustments and torqueing the jam nut.
Procedures for testing seat tightness on metal and soft seated valves to ensure proper sealing.
Procedure for conducting a back pressure test on specific valve constructions to check for external leakage.
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