Swagelok RHPS Series, BSH2, BS2 User Manual

BS(H)2 User Manual
Rev.date: 20-09-2010

BS(H)2

all types of connections

USER MANUAL

Read the complete manual before installing and using the regulator.

BS(H)2 User Manual
Rev.date: 20-09-2010

WARNING

INCORRECT OR IMPROPER USE OF THIS PRODUCT CAN CAUSE SERIOUS PERSONAL
INJURY AND PROPERTY DAMAGE.

Due to the variety of operating conditions and applications for this product, the user is solely
responsible for making the final proper decisions concerning the correct assembly and functioning of
the product and assuring that all the performance, safety and warning requirements are met.

• 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 of the product or its accessories.

• Operate within the temperature limits and other conditions specified for the product.

• Do not drop or damage the product in any other way. This may negatively effect 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.

• This product is not oxygen clean and therefore not suitable for oxygen service.

If there are questions or problems regarding the installation, operation and maintenance these should
be directed to the proper authority on site before continuing.

BS(H)2 User Manual
Rev.date: 20-09-2010

CONTENTS

1

 Introduction ..................................................................................................................................... 1

1.1 Detailed description ....................................................................................................................... 1

1.2 Special features and options ......................................................................................................... 1

1.3 Typical picture of the standard BS(H)2 and its components ......................................................... 2

2 Installation ....................................................................................................................................... 3

2.1 Points of attention before installation ............................................................................................ 3

2.2 Oxygen service ............................................................................................................................. 3

2.3 Installation instructions .................................................................................................................. 4

3 Operation ......................................................................................................................................... 5

3.1 Required tools for operation .......................................................................................................... 5

3.2 Points of attention before operation .............................................................................................. 5

3.3 Changing the set pressure ............................................................................................................ 6

4 Maintenance..................................................................................................................................... 7

4.1 Required tools for maintenance. ................................................................................................... 7

4.2 Points of attention before removal from the system and disassembly .......................................... 8

4.3 Removal from the system ............................................................................................................. 8

4.4 Disassembly .................................................................................................................................. 8

4.5 Inspection of disassembled parts .................................................................................................. 8

4.6 Points of attention before assembly .............................................................................................. 8

4.7 Assembly ....................................................................................................................................... 8

4.8 Recommended torques ................................................................................................................. 9

4.9 Testing ........................................................................................................................................... 9

4.9.1 Leakage across the seat ........................................................................................................... 9

4.9.2 Leakage across the piston o-ring .............................................................................................. 9 

4.9.3 Required set pressure range ..................................................................................................... 9

5 Trouble shooting ........................................................................................................................... 11

1

BS(H)2 User Manual
Rev.date: 20-09-2010

1 Introduction

1.1 Detailed description

The function of a backpressure regulator is to maintain a constant inlet pressure and to control the inlet
pressure with a variable flow.
This regulator is a piston sensing spring loaded backpressure regulator, designed for high inlet pressure.

Due to the “low torque-no wear” stem, the regulator is ideal for use in frequent readjustment type
applications. The regulator comprises a body and spring housing screwed together and has a removable
seat and valve.
The product is designed to be used between -20 °C and +80 °C, whether ambient temperature or media
temperature.

The regulator is soft seated for leak tight shut-off in zero flow conditions and is available in stainless steel.

The standard maximum in- and outlet pressure for the models are:

- Threaded models BS2 : Inlet 400 bar Outlet 400 bar

- Threaded models BSH2 : Inlet 700 bar Outlet 700 bar

Check the assembly drawing or regulator for the specific pressure limits of the supplied

regulator.

Standard features:

- ss 316L throughout

- piston sensing

- bubble tight shut-off

- 2.2mm valve

- 6 relief pressure ranges

- bottom mounting

1.2 Special features and options

The regulator is available with the following options:

- panel mounting

2

BS(H)2 User Manual
Rev.date: 20-09-2010

1.3 Typical picture of the standard BS(H)2 and its components

1 body 12 overtravel spring

2 spring housing 14 knob assembly

3 bodyplug 16 spring housing cover

4 seat retainer 17 retaining ring

5 piston plate 19 valve

6 piston 20 piston screw

7 seat 21 o-ring

9 bottom spring guide 22 o-ring

10 spring guide 23 o-ring

11 set spring 24 o-ring