Swagelok RS10 Series User manual

RS(H)10/15/20 Pressure-Reducing Regulator
User Manual
Read the complete manual before installing and using the regulator.

2
Safe Product Selection
When selecting a product, the total system design must be considered to ensure safe, trouble-free
performance. Function, material compatibility, adequate ratings, proper installation, operation, and
maintenance are the responsibilities of the system designer and user.
WARNING
•Users must be trained and equipped for the handling, use, and servicing of pressure
products and systems.
•Users must contact their gas or liquid supplier for specific safety precautions and
instructions.
•Gaseous media should be free of excessive moisture to prevent icing at high flow.
•Always wear the appropriate protective clothing, including safety glasses, gloves, etc., if
required.
•Follow the applicable safety and maintenance procedures.
•Obey specific local regulations.
•Do not exceed the maximum inlet and outlet pressure rating of the product or its
accessories.
•Operate within the temperature limits and any other conditions specified for the product.
•Do not drop or damage the product in any other way. This may negatively affect the
performance of the product which can cause the product to malfunction.
•Venting fluids and gases can be dangerous. Vent to a safe environment away from people.
Ensure adequate ventilation.

3
Contents
Introduction........................................................................................................................................................ 4
Overview.......................................................................................................................................................... 4
Standard Features........................................................................................................................................... 4
Additional Options ........................................................................................................................................... 4
Oxygen Service............................................................................................................................................... 4
Installation.......................................................................................................................................................... 5
Points of Attention Before Installation ............................................................................................................. 5
Installation ....................................................................................................................................................... 5
Operation............................................................................................................................................................ 6
Required Tools for Operation.......................................................................................................................... 6
Points of Attention Before Operation............................................................................................................... 6
Adjusting the Set Pressure.............................................................................................................................. 6
Maintenance....................................................................................................................................................... 7
Required Tools for Maintenance..................................................................................................................... 7
Points of Attention Before Removal from the System..................................................................................... 8
Removal from the System............................................................................................................................... 8
Assembly Reference Data............................................................................................................................... 9
Disassembly.................................................................................................................................................. 15
Points of Attention Before Reassembly......................................................................................................... 15
Reassembly................................................................................................................................................... 16
RS(H)10 Series: Standard Diaphragm Sensing............................................................................................ 16
RS(H)15 Series: Standard Diaphragm Sensing............................................................................................ 16
RS(H)20 Series: Standard Diaphragm Sensing............................................................................................ 16
RS(H)10 Series: Standard Piston Sensing ................................................................................................... 17
RS(H)15 Series: Standard Piston Sensing ................................................................................................... 17
Testing.............................................................................................................................................................. 18
Seat Leak Test .............................................................................................................................................. 18
Shell Leak Test.............................................................................................................................................. 18
Troubleshooting .............................................................................................................................................. 19

4
Introduction
Overview
- The RS(H)10, RS(H)15 and RS(H)20 series are spring-loaded pressure-reducing regulators designed for
the regulation of high pressure, high flow gases, and liquids.
- For pressure and temperature rating information refer to the Pressure Regulators, RHPS Series catalog,
MS-02-430. Note that seat seal material selection can limit the regulator operational pressure at elevated
temperatures.
WARNING
Check that system pressures and temperatures do not exceed those stated on the regulator as
this could result in product failure.
Standard Features
- Bolted construction
- Stainless steel as standard
- Fully serviceable
- Diaphragm or piston sensing
- Balanced poppet
Additional Options
The regulator is available with the following options:
Anti-tamper
Oxygen Service
- For more information about hazards and risks of oxygen enriched systems see the Swagelok Oxygen
System Safety technical report (MS-06-13).
- Cleaning and packaging to ensure compliance with product cleanliness requirements stated in ASTM G93
Level C is available. Refer to the Pressure Regulators, RHPS Series catalog, MS-02-430, for additional
information.

5
Installation
CAUTION
Do not use the regulator as a shutoff device. A level of leakage across the regulator seat can
occur during normal operation.
Points of Attention Before Installation
This regulator can be equipped with a variety of different options. Before installing the regulator you should
fully understand the functions of the supplied options and the suitability of your particular regulator for the
intended application.
- The preferred mounting position of the regulator is horizontal with the spring housing facing upwards per
Fig 2. Alternative mounting positions may increase the risk of component wear.
- It may be necessary to remove the regulator from the system during maintenance or service. Ensure that
this is possible.
- The regulator is suitable for gases or liquids. Ensure compatibility between the regulator’s materials of
construction and the system media.
Installation
- Verify that the regulator, its connections, and any accessories are undamaged.
- Verify that the regulator and any accessories are suitable for the system operating pressure and
temperature and have suitable connections.
- At the time of delivery any gauge ports may be plugged with blind fittings. Remove these and connect
gauges if desired.
- If inlet/outlet fittings are being used, assemble them to the regulator, per the manufacturer’s instructions,
prior to installing the regulator in the system.
CAUTION
Ensure all upstream tubing/pipework is clean and free from debris. Any swarf, lint, wire, etc. may
damage the regulator, resulting in a seat leak.
- Verify the flow direction of the system and mount the regulator accordingly.
- Securely make the appropriate connections to the regulator in accordance with the procedures
recommended by the connection manufacturer.
- Ensure that the tubing/pipework and the regulator are adequately supported and that there is no stress on
the connections.
- Upstream and downstream shutoff valves should be installed in the system to facilitate servicing,
maintenance, and troubleshooting of the regulator.
WARNING
When using an RSH10 or RSH15 with an inlet pressure higher than 3625 psig (250 bar) a safety
valve must be installed in the outlet line to ensure the outlet pressure does not exceed 3625
psig (250 bar), which could result in product failure.
WARNING
When using an RSH20 with an inlet pressure higher than 2900 psig (200 bar) a safety valve must
be installed in the outlet line to ensure the outlet pressure does not exceed 2900 psig (200 bar),
which could result in product failure.

6
Operation
Required Tools for Operation
- A 19 mm open-ended wrench is required for changing the set pressure on a standard regulator.
- A 19 mm and a 32 mm open-ended wrench are required for anti-tamper regulators.
Points of Attention Before Operation
CAUTION
The product can be hot or cold, depending on the environmental temperature and the process
media temperature. Take the necessary precautions before operating or touching the product.
- Stopping flow through the regulator by closing a downstream shutoff valve may result in a rise in outlet
pressure above the set pressure. This is usually referred to as “lock-up”. This phenomenon does not
indicate a problem with the regulator.
- A decrease of the flow rate may result in a rise of the outlet pressure. An increase of the flow rate may
result in a fall of the outlet pressure. This is usually referred to as “droop”. This phenomenon does not
indicate a problem with the regulator.
- A decrease of the inlet pressure may result in a rise of the outlet pressure. An increase of the inlet
pressure may result in a fall of the outlet pressure. This is usually referred to as “inlet dependency” or
“Supply Pressure Effect (SPE)”. This phenomenon does not indicate a problem with the regulator.
Adjusting the Set Pressure
- The set pressure is the desired outlet pressure of the regulator.
- To set the regulator, ensure that the supply pressure is greater than the required set pressure but does
not exceed the maximum rating of the regulator.
- The regulator must be able to flow in order for it to reduce the outlet pressure.
1. Partially open any downstream valve. This will allow minimal flow through the regulator when adjusting
the set pressure, reducing media consumption during this process.
2. Fully unwind the adjusting screw counterclockwise.
3. Steadily open the supply valve to allow inlet pressure to the regulator.
4. To operate the regulator, turn the adjusting screw clockwise to increase the set pressure. Turn the
adjusting screw counterclockwise to reduce the set pressure.
5. To obtain the most accurate set pressure, final adjustment must be made while increasing the set
pressure. If the desired outlet pressure is exceeded, reduce the pressure below this value then increase
up to it.
6. Fully open the downstream valve to allow full flow during operation.
7. Once under flow conditions make any final set pressure adjustments per steps 3 and 4 if required.

7
Maintenance
WARNING
Incorrect or improper repair or servicing of this product can cause serious personal injury and
property damage.
- All repairs, servicing, and testing of this product must be performed by competent personnel.
- Following any maintenance of the regulator, it is recommended that the product be tested for operation
and leakage.
- The product should be checked periodically for proper and safe operation. It is the user’s sole
responsibility to determine the frequency of maintenance based on the application.
- To reduce maintenance related system downtime to a minimum, either during commissioning or normal
operation, Swagelok recommends having maintenance kits readily available on site. The need for
maintenance kits is particularly important during the commissioning phase of a system installation due to
residual assembly debris remaining in the system. Such debris can cause a seat leak in the regulator,
resulting in components needing to be replaced.
Required Tools for Maintenance
Smooth-jawed vise
Seat insertion tool
RHPS-10-SEAT-TOOL
RHPS-15-SEAT-TOOL
RHPS-20-SEAT-TOOL
36mm socket①
Calibrated torque wrench up to
52 lbf·ft (70 N·m)
46mm socket②
8mm hex drive①
Lubricant (included in kit):
WL-8③
Krytox® 240 AC④
10mm hex drive②
C-ring pliers
Liquid leak detector
①RS(H)10 and RS(H)15 series only
②RS(H)20 series only
③Standard cleaned assemblies
④ASTM G93 or SC11 cleaned assemblies Table 1

8
Points of Attention Before Removal from the System
- Swagelok recommends removing the regulator from the system for servicing and maintenance.
- Follow all local system safety and maintenance procedures when removing the regulator.
WARNING
Before removing a regulator from the system, to avoid personal injury, you must:
•Depressurize the system.
•Purge the system to remove any residual system media left in the regulator.
•Always vent to a safe environment away from people and ensure there is adequate
ventilation.
CAUTION
Check if the process media is hazardous or toxic. If required, take the necessary safety
precautions to ensure a safe workspace and your personal safety.
CAUTION
The product can be hot or cold, depending on the environmental temperature and the process
media temperature. Take the necessary precautions before operating or touching the product.
Removal from the System
1. Isolate the regulator from all pressure sources by closing all appropriate upstream valves in the system.
2. With the regulator set, open all appropriate downstream valves to allow pressure to vent from the
regulator.
WARNING
Ensure all pressure on the inlet and outlet has been fully vented. The accidental release of
residual trapped pressure can cause serious personal injury.
3. Disconnect and remove the regulator from the system.

9
Assembly Reference Data
Item
Component Name
Kit Type(s)
Torque
lbf·ft (N·m)
Recommended Lubrication
(included in kit per Table 1)
1
Body plug
C1, C2
RS(H)10: 37 (50)
Lubricate threads
RS(H)15: 37 (50)
RS(H)20: 52 (70)
2
Body plug O-ring
B1, B2, C1, C2
3
Poppet spring
C1, C5
4
Poppet backup ring
A1, A2, B1, B2, C1
5
Poppet O-ring
A1, A2, B1, B2, C1
Lubricate
6
Poppet
A1, A2, B1, C1
7
Seat
A1, B1, C1
RS(H)10: 7 (10)
Lubricate threads
RS(H)15: 11 (15)
RS(H)20: 15 (20)
8
Seat O-ring
A1, B1, B2, C1
9
Body
N/A
10
Body plate
C1
11
Retaining ring
C1
12
Conical spring
C1
13
Diaphragm plate
C1
14
Diaphragm
C1, C3
15
Bottom spring guide
C1
16
Piston
C1, C3
17
Piston O-ring
B1, B2, C1, C3
Lubricate
18
Piston backup ring
B1, B2, C1, C3
19
Piston plate
C1, C3
20
Piston plate O-ring
B1, B2, C1, C3
21
Set spring
C1, C4
22
Upper spring guide
C1
Lubricate central recess
23
Ball
C1
Lubricate
24
Spring housing
N/A
25
Washer
E1
26
Cap screw
E1
RS(H)10: 22 (30)
Lubricate threads
RS(H)15: 22 (30)
RS(H)20: 52 (70)
27
Lock nut
D1
28
Adjusting screw
D1
Lubricate threads
29
Anti-tamper cover O-
ring
B1, B2, D1
30
Anti-tamper cover
D1
Lubricate threads
31
Blind plug
N/A
NPT: 15 (20)
Wrap threads in 2 layers of
PTFE tape. Lubricate tape.
BSP: 26 (35)
Lubricate threads
32
BSP blind plug O-ring
B1, B2, C1
Table 2
For more information on RHPS series maintenance kits, refer to the Pressure Regulators, RHPS Series
catalog, MS-02-430.

10
RS(H)10/15/20 Series, Exploded view
Fig 1

11
RS(H)10/15 Series, Diaphragm Sensing, Section View
Fig 2

12
RS(H)10/15 Series, Piston Sensing, Section View; Control Range 5
Fig 3

13
RSH10/15 Series, Piston Sensing, Section View; Control Ranges 6,7 and 8
Fig 4

14
RS(H)20 Series, Section View
Fig 5

15
Disassembly
- The following instructions describe how to fully disassemble the regulator for the purposes of
maintenance and repair.
- Note that not all components listed appear in all regulator configurations.
- Only disassemble the regulator as far as is required to replace the components supplied in the
maintenance kit.
- Discard all components being replaced.
1. Remove the body plug (1), poppet spring (3) and poppet (6) from the body (9).
2. Remove the body plug O-ring (2), poppet O-ring (5) and, if present, poppet backup ring (4) from the body
plug (1) and poppet (6).
3. Using the seat insertion tool, remove the seat (7) and seat O-ring (8).
4. Ensure the adjusting screw (28) is backed out and not acting on the set spring (21). It can be fully
removed, if required, by unwinding counterclockwise until it detaches from the spring housing (24).
5. Loosen the cap screws (26) and remove the spring housing (24).
6. Remove the upper spring guide (22), including the ball (23), set spring (21), and bottom spring guide (15).
7. Remove the diaphragm (14) and diaphragm plate (13) or piston plate (19) and piston (16).
8. Remove any O-ring (17, 20) and backup ring (18) from the piston plate (19).
9. If required remove the body plate (10) by removing the retaining ring (11).
Points of Attention Before Reassembly
- Visually inspect all components for abnormal wear or damage. Replace components in case of doubt.
- All parts must remain clean and undamaged before starting assembly.
- Maintenance kit components will be supplied preassembled where practicable to aid reassembly.
- Swagelok recommends replacing all O-rings removed during disassembly.
- Swagelok recommends that dynamic O-rings should be lightly lubricated per Table 2.
NOTICE
All threaded components must be lightly lubricated per Table 2 before reassembly to avoid
galling of threads.

16
Reassembly
RS(H)10 Series: Standard Diaphragm Sensing
1. Fit the body plate (10) into the body (9) and retain with the retaining ring (11).
2. Fit the Seat O-ring (8) into the body (9) and ensure that it is seated all the way round.
3. Lightly lubricate the seat threads (7) then insert the seat (7) into the body (9) using the seat insertion tool.
4. Torque the seat (7) to 7 lbf·ft (10 N·m). Take care not to pinch the seat O-ring (8) or damage the seat (7)
with the tool.
5. Fit the poppet O-ring (5) and, if present, backup ring (4) onto the poppet (6). Ensure they are oriented
correctly per Fig 2.
6. Lightly lubricate the poppet O-ring (5) then insert the poppet (6) through the seat (7) and body plate (10).
Take care not to damage either the seat (7) or poppet (6).
7. Place the poppet spring (3) onto the poppet (6).
8. Fit the body plug O-ring (2) onto the body plug (1) and lightly lubricate the body plug threads.
9. Screw the body plug (1) into the body (9) over the poppet spring (3). Torque to 37 lbf·ft (50 N·m).
10. Place the diaphragm plate (13) onto the poppet (6).
11. Place the diaphragm (14) onto the diaphragm plate (13) and locate it in the body (9).
12. Place the bottom spring guide (15) centrally onto the diaphragm (14).
13. Fit the ball (23) into the upper spring guide (22) and retain in place.
14. Place the set spring (21) and spring guide (22) onto the bottom spring guide (15).
15. Lightly lubricate the cap screws (26). Fit the spring housing (24) over the spring (21) and secure with the
cap screws (26) and washers (25).
16. Torque the cap screws (26) to 22 lbf·ft (30 N·m).
17. Lightly lubricate the adjusting screw (28) then insert it and the lock nut (27) into the spring housing (24).
RS(H)15 Series: Standard Diaphragm Sensing
1. Follow steps 1 through 3 of the RS(H)10 series standard diaphragm sensing reassembly procedure.
2. Torque the seat (7) to 11 lbf·ft (15 N·m). Take care not to pinch the seat O-ring (8) or damage the seat (7)
with the tool.
3. Fit the poppet O-ring (5) into the body plug (1).
4. Follow steps 6 through 17 of the RS(H)10 series standard diaphragm sensing reassembly procedure.
RS(H)20 Series: Standard Diaphragm Sensing
1. Follow steps 1 through 3 of the RS(H)10 series standard diaphragm sensing reassembly procedure.
2. Torque the seat (7) to 11 lbf·ft (20 N·m). Take care not to pinch the seat O-ring (8) or damage the seat (7)
with the tool.
3. Follow steps 5 through 8 of the RS(H)10 series standard diaphragm sensing reassembly procedure.
4. Insert the body plug (1) into the body (9) over the poppet spring (3). Torque to 52 lbf·ft (70 N·m).
5. Place the conical spring (12) onto the body plate (10).
6. Follow steps 10 through 15 of the RS(H)10 series standard diaphragm sensing reassembly procedure.
7. Torque the cap screws (26) to 52 lbf·ft (70 N·m).
8. Follow step 17 of the RS(H)10 series standard diaphragm sensing reassembly procedure.

17
RS(H)10 Series: Standard Piston Sensing
1. Follow steps 2 through 9 of the RS(H)10 series standard diaphragm sensing reassembly procedure.
2. If present fit the body plate (10) into the body (9) oriented per Fig 3.
3. Fit the piston plate O-ring (20), piston O-ring (17) and, if present, piston backup ring (18) onto and into the
piston plate (19).
4. Lightly lubricate the piston O-ring (17) then insert the piston (16) into the piston plate (19).
5. Fit the piston plate (19) into the body (9).
6. If present, place the bottom spring guide (15) onto the piston (16).
7. Follow steps 13 through 17 of the RS(H)10 series standard diaphragm sensing reassembly procedure.
RS(H)15 Series: Standard Piston Sensing
1. Follow steps 2 and 3 of the RS(H)10 series standard diaphragm sensing reassembly procedure.
2. Torque the seat (7) to 11 lbf·ft (15 N·m). Take care not to pinch the seat O-ring (8) or damage the seat (7)
with the tool.
3. Fit the poppet O-ring (5) into the body plug (1).
4. Follow steps 6 through 9 of the RS(H)10 series standard diaphragm sensing reassembly procedure.
5. If present fit the body plate (10) into the body (9) oriented per Fig 3.
6. Fit the piston plate O-ring (20), piston O-ring (17) and, if present, piston backup ring (18) onto and into the
piston plate (19).
7. Lightly lubricate the piston O-ring (17) then insert the piston (16) into the piston plate (19).
8. Fit the piston plate (19) into the body (9).
9. If present, place the bottom spring guide (15) onto the piston (16).
10. Follow steps 13 through 17 of the RS(H)10 series standard diaphragm sensing reassembly procedure.

18
Testing
Swagelok recommends that the regulator be tested for seat and shell leakage to atmosphere. A well
performing regulator will not show any indication of leaking. If any evidence of a leak is identified this must be
rectified. Any damaged components must be replaced.
Seat Leak Test
1. Ensure there is sufficient supply pressure to the regulator to be able to perform the tests.
2. Ensure the adjusting screw is screwed fully counterclockwise.
3. Maintain an inlet pressure of approximately 14.5 psig (1 bar) on the regulator and close the downstream
shutoff valve.
4. Monitor the outlet pressure. An increase in pressure over time indicates a seat leak.
5. Repeat the procedure with the highest inlet pressure applicable for the regulator and system.
Shell Leak Test
1. Maintain an inlet pressure of approximately 29 psig (2 bar) on the regulator and close the downstream
shutoff valve.
2. Increase the outlet pressure to approximately 14.5 psig (1 bar).
3. Using liquid leak detector, check for bubbles at the spring housing to body interface, body plug to body
interface and the spring housing weep hole.
4. Repeat the procedure with the highest inlet and outlet pressure applicable for the regulator and system.

19
Troubleshooting
Symptom
Cause
Remedy
The outlet pressure creeps up,
without adjusting the spring.
A damaged poppet and/or
seat.
Replace the poppet and/or seat.
Leakage around the body plug.
A damaged O-ring.
Replace the O-ring.
Leakage between the body and
the spring housing or through the
spring housing weep hole.
A damaged diaphragm or O-
ring.
Replace the diaphragm or O-ring.
Insufficient torque on the cap
screws.
Tighten the cap screws per Table 2.
Controlled pressure drops off
sharply even when the flow is
within regulator capabilities.
The system filter element is
clogged.
Replace the system filter.
The required outlet pressure
cannot be reached.
The inlet pressure to the
regulator is not high enough.
Ensure that the inlet pressure to the
regulator is equal to or greater than the
desired set pressure.
The outlet pressure rises too
much when going from a dynamic
to a static situation.
There is too much flow in the
dynamic situation.
A larger regulator or parallel regulator is
required.
Review application flow capacity and
contact your local authorized sales and
service center.
The outlet pressure does not drop
when the actuating stem is
adjusted counterclockwise.
The regulator is non-venting.
A shutoff valve in the outlet line must be
opened to reduce the outlet pressure.
The outlet pressure has changed
without adjusting the actuating
stem.
Changes to the inlet pressure
may result in changes to the
outlet pressure.
Maintain a constant inlet pressure to the
regulator. See “Points of Attention
Before Operation” about dependency.
Changes to the flow may result
in changes to the outlet
pressure.
Maintain a constant flow through the
regulator. See “Points of Attention
Before Operation” about droop.
Table 3

Warranty Information
Swagelok products are backed by The Swagelok Limited Lifetime Warranty.
For a copy, visit swagelok.com or contact your authorized Swagelok representative.
Swagelok, Snoop - TM Swagelok Company
Krytox –TM The Chemours Company
© 2018 Swagelok Company
July 2018, RevB
MS-CRD-0188