Azbil RA1B, Руководство пользователя

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2
Chapter 1 Overview
Table 1-1. RA1B standard specifications — Main materials
No. Name Material No. Name Material
1 Cover screw (M6) Stainless steel 14 Filter PVA resin
2 O-ring VMQ 15 Drain bowl Aluminum alloy
3 Screw (M4) Stainless steel 16 Drain plug (M5) Stainless steel
4 Bonnet Aluminum alloy 17 O-ring VMQ
5 Slotted screw (M6) Stainless steel 18 Valve Stainless steel
6 Pressure adjustment
spring receiver
Plated steel plate 19 Intake port Copper alloy
7 Pressure adjustment
spring
Spring steel 20 O-ring VMQ
8 Screw (M5) Stainless steel 21 Exhaust pipe Copper alloy
9 Diaphragm CR (inserted into base
fabric) 22 Pressure-receiving plate Stainless steel
10 Main unit Aluminum alloy 23 Pressure adjustment knob PBT resin, stainless steel
11 Pressure adjustment
spring
Spring steel 24 Flange nut (M6) Stainless steel
12 Pressure adjustment
spring receiver
Plated steel plate 25 Flat washer Stainless steel
13 Gasket NBR 26 Plug (only for OUT2) Stainless steel
„ Operating Principles
As shown by the arrows, air from the primary side passes through the filter (14), where
solid foreign matter is removed.
Until the secondary pressure balances the force of the pressure adjustment spring (7) and
closes the valve (18), air continues to flow into the secondary side. When the secondary
pressure exceeds the specified pressure, the diaphragm (9) rises to release excess air
through the openings in the valve (18) and diaphragm (9) and the bleed hole in the side of
the bonnet (4).