background image

Figure 4.

 Controller External Dimensions

mm / IN.

Figure 5.

 Typical Installation

P

u

P

d

D

4 x

 D

(MINIMUM)

REGULATOR

REGULATOR 

SENSE LINE

SLAM-SHUT DEVICE

TyPE VSX4

TyPE VSX8

SLAM-SHUT DEVICE

SENSE LINE

RESET TRIP CLEARANCE: 25 / 1
REMOVAL CLEARANCE: 45 / 1.8

SPRING REMOVAL

CLEARANCE 80 / 3.1

146 / 5.8

Ø 118 / 4.6

28 / 1.1

147 / 5.8

RESET TRIP CLEARANCE: 20 / 0.8
REMOVAL CLEARANCE: 35 / 1.4

SPRING REMOVAL

CLEARANCE 80 / 3.1

146 / 5.8

28 / 1.1

155 / 6.1

Ø 118 / 4.6

VSX4 and VSX8 Series

7

Summary of Contents for EMERSON VSX4 Series

Page 1: ...erformed by unqualified personnel may result in improper adjustment and unsafe operations which may result in equipment damage or personal injury Figure 1 VSX4 and VSX8 Series Controller The VSX4 and...

Page 2: ...on Only Connections Controller Vent 1 4 NPT External Sensing Line 1 4 NPT Maximum Allowable Pressure PS 1 Differential Strength 20 0 bar 290 psig Integral Strength 6 0 bar 87 psig Specific Maximum All...

Page 3: ...704 regulator type spring range Spring part number and color Minimum Maximum Typical Setpoint Under Pressure Shutoff Upso Over Pressure Shutoff Opso Spring Range Factory Set Spring Range Factory Set m...

Page 4: ...o 1 57 bar 1 15 2 to 22 8 1 Pink 3 0 0 118 70 0 2 75 GF02172X012 1 25 to 2 30 bar 1 18 1 to 33 4 1 Green 3 4 0 134 70 0 2 75 GF02173X012 2 10 to 3 75 1 30 5 to 54 4 1 Silver 4 0 0 157 70 0 2 75 0 90 t...

Page 5: ...oves the valve plug against the regulator port stopping the flow of gas The reset button is then used to reset relatch the controller refer to the Resetting Procedure section for detailed resetting in...

Page 6: ...tings does not preclude the possibility of damage from external sources or from debris in the pipeline General Installation Instructions Note The VSX4 and VSX8 Series can be rotated 360 for easy insta...

Page 7: ...line Slam Shut Device type VSX4 type vsx8 Slam Shut Device sense line RESET TRIP CLEARANCE 25 1 REMOVAL CLEARANCE 45 1 8 SPRING REMOVAL CLEARANCE 80 3 1 146 5 8 118 4 6 28 1 1 147 5 8 RESET TRIP CLEA...

Page 8: ...w key 40 by turning it counterclockwise Remove and discard the UPSO spring key 38 and the mini washer key 103 Using a flathead screwdriver turn the OPSO adjusting screw key 43 clockwise until it stops...

Page 9: ...or key 27 is visible and firm when pressed with a finger Controller in Closed Tripped Position Figure 12 When the controller is in the closed position the travel indicator key 27 is not visible and ea...

Page 10: ...t off Button key 23 DOWNSTREAM CONTROL LINE CONNECTION 23 Figure 7 Controller Manual Bypass Figure 8 Controller Bypass with Screwdriver Manual Shut Off Button Procedure For VSX4 and VSX8 Series 47 30...

Page 11: ...e 12 Controller in Closed Tripped Position Figure 9 Relatching the Controller Mechanism 30 Figure 10 Repositioning the Reset Button 26 Figure 11 Controller in Open Reset Position 27 VSX4 and VSX8 Seri...

Page 12: ...r controller from system pressure and relieving all internal pressure Refer to Figure 13 when following this procedure Remove the body flange screws key 34 and the two half flanges key 36 Remove the c...

Page 13: ...your local Sales Office Table 8 VSX4 and VSX8 Series Troubleshooting Using a 10 mm 0 394 in wrench unscrew and remove the eight spring case screws key 16 and associated nuts key 12 and then remove the...

Page 14: ...012 43 OPSO Adjusting screw GF01923X012 44 Fastening ring not shown GF04079X012 46 Outlet O ring I 5370 54 0 x 2 0 GF03443X012 47 VSX4 Series Valve plug D24 Disk Medium capacity GF01940X012 47 VSX8 Se...

Page 15: ...GF01927X012 14 1 Closing cap O ring GF03448X012 31 1 Lock nut FA404550X12 spring according to setpoint not included in the kit L1 L2 3 14 80 84 48 104 42 7 6 12 102 28 29 27 2 L2 L L1 L1 L1 L1 L2 23 2...

Page 16: ...d Arab Emirates Tel 971 4811 8100 TESCOM Emerson Process Management Tescom Corporation USA Headquarters Elk River Minnesota 55330 2445 USA Tels 1 763 241 3238 1 800 447 1250 Europe Selmsdorf 23923 Ger...

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