Emerson 92W Manual de Instruções descarregar pdf (Página 3)

Type 92W

Table 1. Outlet (Control) Pressure Ranges

Table 2. Maximum Outlet Pressures

OUTLET (CONTROL) PRESSURE RANGES

PILOT CONTROL SPRING

COLOR CODE (SEE PARTS

LIST FOR PART NUMBER)

Psig bar

Type 6492L Pilot Type 6492H Pilot Type 6492L Pilot Type 6492H Pilot

2 to 6

5 to 15

13 to 25

10 to 30

25 to 75

70 to 150

0,14 to 0,41

0,34 to 1,0

0,90 to 1,7

0,69 to 2,1

1,7 to 5,2

4,8 to 10,3

Yellow

Green

Red

CONSTRUCTION

MAXIMUM OPERATING

OUTLET PRESSURE

MAXIMUM EMERGENCY OUTLET PRESSURE

(IF EXCEEDED, PRESSURE VESSEL INTEGRITY MAY NOT

BE RETAINED AND PERSONAL INJURY OR PROPERTY

DAMAGE COULD RESULT)

Cast Iron Main Valve

and Pilot Body

Steel Main Valve

and Pilot Body

With Type 6492H pilot

150 psig

(10,3 bar)

250 psig (17,2 bar) or main valve

body rating limit, whichever is lower

300 psig (20,7 bar) or main valve

body rating limit, whichever is lower

With Type 6492L pilot

25 psig

(1,7 bar)

50 psig (3,4 bar) 125 psig (8,6 bar)

2. A Type 92W regulator may be installed in any

orientation, as long as ow through the regulator

matches the direction of the arrow on the main

valve body.

3. Apply liquid-compatible pipe compound to the male

pipeline threads for an NPT body, or use suitable

line gaskets for a anged body. Use acceptable piping

procedures when installing the regulator. .

4. If continuous operation of the system is required during

inspection and maintenance, install a three-valve

bypass around the regulator. If the owing medium

contains solids, install a properly sized strainer

upstream of the regulator.

Note

A regulator that has the Type 6492H or

6492L pilot with a 1/8-inch (3,2 mm) drilled

hole in the spring case may function

improperly if this spring case vent hole

becomes clogged. Install and maintain

such regulator so that the spring case vent

hole stays clear.

5. As shown in Figure 2, connect a control line as

large as possible but no smaller than 3/8-inch

(9,5 mm) diameter bushed down to the 1/4 NPT

connection in the cylinder spacer (NPS 1, 1-1/2,

or 2 body size) (DN 25, 40, or 50) or the pilot body

(NPS 2-1/2, 3, or 4 body size) (DN 65, 80, or 100).

With the NPS 2-1/2, 3, or 4 (DN 65, 80, or 100

body size, the pilot may be mounted as shown in

Figure 6 so that the control line connection faces

either upstream or downstream.

6. Locate the control line connection at least 10 pipe

diameters away from the regulator or swage and in a

section of straight pipe. .

7. Do not locate the control line connection in a gate,

plug, or check valve; or in an elbow, swage, or

other area of the pipeline where turbulence or

abnormal velocities may occur; or in a large-volume

vessel that can cause noticeable control lag.

8. Install a shutoff valve (not a needle valve) in the control

line to isolate the pilot during maintenance.

9. Install a pressure gauge in the control line, or near the

regulator, to aid in setting the outlet pressure.

10. With a pressure-loaded or on-off pilot, connect

the pressure-loading or on-off piping or tubing to

the 1/4 NPT connection in the tapped pilot

spring case.

11. The pressure setting of the regulator is determined by:

• The pilot control spring adjustment on a standard

pilot, or .

• The pressure-loading device in conjunction with the

control spring adjustment on a pressure-loaded

pilot. In both cases, check these settings to make

sure they are correct for the application.

Startup and Adjustment

Note

The maximum inlet pressure for a specic

construction is stamped on the main

valve nameplate. Use pressure gauges

to monitor upstream and downstream

pressures during startup. .

1 2 3 4 5 6 7 8 ... 11 12

Type 92W Liquid Regulator 1
Type 92W 10

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