EMERSON Manuals B 240 Series Spring Loaded Pressure Regulators Instruction Manual

Instruction Manual

Type B/240

D103663X012 August 2017

B/240 Series Spring Loaded Pressure Regulators SUMMARY Introduction ........................................................................ 1 PED Categories and Fluid Group ...................................... 2 Characteristics ................................................................... 2 Labelling ............................................................................ 2 Overpressure Protection .................................................... 3 Transport and Handling ..................................................... 3 Atex Requirements ............................................................ 3 Slam-Shut Controller ......................................................... 3 Dimensions and Weights ................................................... 4 Operation ........................................................................... 5 Installation ......................................................................... 6

Startup ............................................................................... 6 Figure 1. Regulator Type B/249

Adjustment ......................................................................... 7 Shutdown ........................................................................... 7

This product has been designed to be used with fuel gases of

Periodical Checks .............................................................. 7

1st and 2nd family according to EN 437, and with other non

Maintenance ...................................................................... 7

aggressive and non fuel gases. For any other gases, other Spare Parts ........................................................................ 8 than natural gas, please contact your local sales agent.

Troubleshooting ................................................................. 8 The following versions are available: Parts List ............................................................................ 9 B/242 • B242-AP: Regulator

B/249 • B249-AP: Regulator with slam-shut Versions without relief valve available on request

INTRODUCTION

Tightness cover versions available on request (e.g. B/249-D).

Scope of Manual

The standard gas pressure devices (regulators and safety shut-off devices) are those used in the assemblies dealt with

This manual provides instructions for installation, startup,

into EN 12186 and EN 12279 and their use has to be under

maintenance and spare parts ordering for the B/240 series

the provisions into ENs 12186 & 12279.

spring loaded regulators.

Fail open stand-alone regulators cannot be used as a Product Description safety accessory according PED 2014/68/UE to protect downstream pressure equipment.

The B/240 series regulators are spring loaded single seated,

In the pressure regulators (with or without built-in safety

with counterbalanced valve disc.

shut-off devices) manufactured by Emerson shall be used additionary pressure accessories (e.g. pilots or filters)

They are usually supplied with safety valve and built in

manufactured and labeled by Emerson.

filter and can be also provided with slam-shut controller for minimum pressure, maximum pressure or minimum and Emerson will be not responsible for any possible inefficiency maximum downstream pressure. due to installation of not own production additionary pressure

accessories (e.g. pilots or filters).

The regulators of the B/240 series due to their operating specifications are mainly used in those system where When pressure containing parts of possible built-in safety sudden capacity variations are required, or else, where the shut-off device (SSD) valve and pilot have different cut-off of the gas distribution is controlled by solenoid valve, maximum allowable pressures, the SSD is differential such as for the feeding of burners. strength type.