KSB ECOLINE FYC, Руководство по эксплуатации

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4 Valve Description
57 of 100
Part No. Description Material
Trim 8
Trim 2 Trim 10
16 Handwheel A 197 A 197 A 197
17 Nut A 194 2H A 194 8 A 194 8
18 Name plate SS304 SS304 SS304
19 Washer A 276 410 A 276 410 A 276 410
20
35)
34)
Bellows SS304 SS316L SS316L
4.5.5.6 Function
The main components of the gate valves are the pressure-retaining parts, i.e. the
body (1) and the bonnet (6), and the functional unit.
The body (1) and the bonnet (6) are connected by bolts (7), and the joint is sealed to
atmosphere by the gasket (5).
The functional unit consists of the wedge (3), the stem (4) and the bellows (20). The
actuating unit is a handwheel (16) or actuator.
The stem (4) passage through the bonnet (6) is sealed off by the bellows (20). The
back-up gland packing (8) is tightened by means of two eyebolts (11) and nuts (13).
The bellows-type stem seal is maintenance-free.
The seating surfaces of seat ring (2) and wedge (3) are made of stainless materials.
The handwheel (16) is mounted on the square or hexagon of the stem nut (14) and
secured with a nut (17).
4.6 Lift Check Valves to ANSI/ASME
4.6.1 ECOLINE PTF 150-600
4.6.1.1 Operating data
Table 61: Operating properties
Characteristic Value
Nominal pressure Class 150 - 600
Nominal size NPS ½'' - 2''
Max. permissible pressure 104 bar / 1480 PSI
Min. permissible temperature 0 °C / 32 °F
Max. permissible temperature 816 °C / 1500 °F
Temperatures < 0 °C on request
Selection as per pressure/temperature ratings
(
ð
Section 4.6.1.4, Page 59)
4.6.1.2 Fluids handled
▪ Steam
▪ Fluids containing gas
▪ Gas
▪
High-temperature hot water
▪ Volatile fluids
▪ Feed water
35)
Other bellows materials on request.