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Swagelok XS Series, Service Instructions Manual

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Swagelok XS Series Service Instructions Manual Download Page 4

4

MS-CRD-0064

Revision 1 6-00-CP

Reassembly

Outlet Body

1. Place the backup ring on the outlet body.

2. Lubricate the O-ring with a compatible

lubricant.

3. Slide the O-ring over the threads against the

backup ring.

4. Select the preferred replacement spring from

the table below.

5. Insert the spring, large end first, into the body.

6. Insert the poppet over the spring.

Body

threads

7. Lubricate the body threads with a system-

compatible lubricant

Nominal
End
Connection
Size

Spring

Nominal Flow, U.S. gal/min 

(L/min)

Standard

Flow

Medium

Flow

Low

Flow

1/8 in.
1/4 in.
6 mm

XS4

XS4-3

XS4-1

5 

(18.9)

3 

(11.3)

1 

(3.7)

3/8 in.
8 mm

XS6

XS6-6

XS6-3

9 

(34.0)

6 

((22.7)

3 

(11.3)

1/2 in.
12 mm

XS8

XS8-6

XS8-3

13 

(44.2)

6 

(22.7)

3 

(11.3)

Summary of Contents for XS Series

Page 1: ...ns These instructions also apply to XS series valves with pipe ends and with VCR and VCO face seal fitting end connections Component Identification Definitions Statements and symbols are used in this document to identify safety concerns Read the definitions below before performing the service instructions This symbol indicates cautionary information Caution Indicates a potentially hazardous situat...

Page 2: ...rate Create maximum flow surges Valve must remain open in both instances 2 Vent system line to simulate a break Valve must trip close If valve trips closed proceed to step 3 If valve does not trip closed replace the spring with one of the lower flow springs Repeat the Testing procedure 3 Perform reset test by venting system to trip valve Close upstream or downstream valve to allow the valve to res...

Page 3: ... O ring One Set of Three Labels GPM gallons per minute U S gal min Body Hex Wrenches Maintenance Disassembly 1 Remove the excess flow valve from the system 2 Separate the inlet body from the outlet body 4 Remove the spring Inlet Body 7 Remove the identification ring 5 Remove the O ring 6 Remove the backup ring Outlet Body 3 Remove the poppet ...

Page 4: ...spring from the table below 5 Insert the spring large end first into the body 6 Insert the poppet over the spring Body threads 7 Lubricate the body threads with a system compatible lubricant Nominal End Connection Size Spring Nominal Flow U S gal min L min Standard Flow Medium Flow Low Flow 1 8 in 1 4 in 6 mm XS4 XS4 3 XS4 1 5 18 9 3 11 3 1 3 7 3 8 in 8 mm XS6 XS6 6 XS6 3 9 34 0 6 22 7 3 11 3 1 2 ...

Page 5: ...identification ring 11 Tighten the valve bodies 10 Thread the outlet and inlet bodies together Notice Do not pinch the O ring and backup ring between the outlet and the inlet bodies during assembly The O ring must fit tightly into the inlet body Tighten the body halves to approximately 200 in lb 22 6 N m Body Hex Wrench Body Hex Socket 12 See Installation and Testing sections ...

Page 6: ...ormal flow after being in service for some time Poppet openings are plugged Clean or replace poppet Flush or blow down regularly Clean on a regular preventive maintenance schedule Valve does not trip at high flow Valve is too large Evaluate a smaller valve Evaluate a lower trip range spring option Low system pressure System pressure must be greater than trip pressure Evaluate a lower trip range sp...

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