Emerson EZH and EZHSO Series Pressure Reducing Regulators Manual de Instruções descarregar pdf (Página 12)

EZH and EZHSO Series

Table 4. Torque Specications

PART NAME

TORQUE SPECIFICATIONS

Body Size

NPS 1 / DN 25 NPS 2 / DN 50 NPS 3 / DN 80 NPS 4 / DN 100

ft-lbs N•m ft-lbs N•m ft-lbs N•m ft-lbs N•m

Indicator Fitting or Plug (key 141) 10 to 30 14 to 41 10 to 30 14 to 41 10 to 30 14 to 41 10 to 30 14 to 41

Stud Nuts (key 26) 45 to 50 61 to 68 45 to 50 61 to 68 80 to 95 108 to 129 - - - -

Socket Head Cap Screws (key 16) 50 to 70

(1)

5.6 to 7.9

(1)

50 to 70

(1)

6 to 7.9

(1)

50 to 70

(1)

6.2 to 7.9

(1)

100 to 115

(1)

11 to 13

(1)

Stud Bolts (key 24) 50 to 70 68 to 95 50 to 70 68 to 75 100 to 120 136 to 163 - - - -

Cap Screws (key 21) 50 to 55 68 to 75 130 to 150 176 to 203 250 to 270 339 to 366 280 to 310 380 to 420

Cap Screws (key 6) 50 to 60 68 to 81 50 to 60 68 to 81 70 to 95 95 to 129 140 to 155 190 to 210

Socket Head Cap Screws (key 33) 30 to 40

(1)

3.4 to 4.5

(1)

50 to 60

(1)

5.6 to 6.8

(1)

80 to 100

(1)

9 to 11

(1)

80 to 100

(1)

9 to 11

(1)

Smart Screws (key 68) - - - - - - - - - - - - 31 to 40

(1)

3.5 to 4.5

(1)

Socket Head Cap Screws (key 74) - - - - - - - - - - - - 26 to 35

(1)

2.9 to 4

(1)

Cap Screws (key 77) - - - - - - - - - - - - 90 to 110 122 to 149

Sleeve Guide (key 61) - - - - - - - - - - - - 130 to 140 176 to 190

Cap Screw (key 154) 16

(1)

1.8

(1)

5.6

(1)

10 14 2.9 to 3.5 3.9 to 4.7

Stem Nut (key 151) 32 43 32 43 45 61 45 to 50 61 to 68

Stem Nut (key 155) 30 41 - - - - - - - - - - - -

Hex Nut (key 152) - - - - 40

54 60 81 45 to 50 61 to 68

1. Torque specications are given in in-lbs.

4. Vent pressure from bleed line until regulator closes

and then shut-off vent. A full bore NPS 1/4 ball

valve for the vent line is preferred.

5. Slowly open downstream valve, making sure

that there is a constant sufcient pressure drop

across the regulator. If downstream pressure

climbs too close to upstream pressure (a minimum

DP of 55 psi / 3.8 bar must be guaranteed), the

regulator will again fully open. In this case, start-up

procedure needs to be repeated.

For a single regulator (Figure 4), set the pilot to

the desired outlet (control) pressure according to the

Pilot Adjustment procedure.

For a wide-open downstream monitor installation

(Figure 5), adjust the upstream working pilot until

intermediate pressure is higher than the desired

setpoint of the monitor pilot. Adjust the downstream

monitoring pilot to the desired monitoring takeover

pressure. Reduce the upstream pilot to the normal

outlet pressure setting.

For a wide-open upstream monitor installation

(Figure 5), adjust the downstream working pilot to a

setpoint higher than the setpoint of the monitor pilot.

Adjust the upstream monitoring pilot to the desired

monitoring takeover pressure. Reduce the downstream

pilot to the normal outlet pressure setting.

For a working monitor installation (Figure 6),

adjust the setpoint of the upstream monitor pilot

Type PRX/125 to the desired maximum pressure.

Adjust the upstream working pilot Type PRX/120 to

the desired intermediate pressure setting. Adjust the

downstream pilot to a pressure setting slightly above

the upstream monitor pilot pressure setting. Adjust the

upstream monitor pilot to its desired setpoint. Establish

nal desired downstream pressure by adjusting the

downstream working regulator pilot.

6. After adjusting the PRX Series pilot(s) to the

desired pressure setting(s), slowly open the

downstream block valve wide open.

7. Close the bypass valve, if used.

Shutdown

CAUTION

If the pilot bleed control line pressure is

shutdown rst, the downstream system

may be subjected to full inlet pressure.

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 39 40

Comentários a estes Manuais

Sem comentários

Emerson EZH and EZHSO Series Pressure Reducing Regulators Manual de Instruções Página 12

Comentários a estes Manuais

Manuais e produtos relacionados com Componentes e acessórios para veículos motorizados Emerson EZH and EZHSO Series Pressure Reducing Regulators