Bell & Gossett HS 619B User Manual

INSTRUCTION MANUAL

HS-619

REVISION B

Hoffman Specialty

®

Series 754
Self-Contained Pressure
Reducing Regulator

For Steam Service

Maximum Body Pressure 250 Psig (17.3 bar)

Maximum Temperature 406°F (208°C)

WARNING

CAUTION

WARNING

• Before using product, read and understand instructions.

!

• Save these instructions for future reference.

• All work must be performed by qualified personnel trained in the proper application,
installation, and maintenance of steam systems in accordance with all applicable codes
and ordinances.

• To prevent serious burns, wear heat resistant gloves when opening and closing steam
valves, or handling hot equipment.

• To prevent serious burns, the internal pressure of the regulator must be 0 psi (0 bar) before
servicing.

• Connect a pipe to the blow down valve in such a way as to prevent exposure and injury
from discharge.

• To prevent property damage, personal injury, or death, cap off the gate valves if they
are not connected to a drain and when they are not in use for test or pressure relief.

Failure to follow this warning could cause property damage, personal injury or death.

IMPORTANT: To prevent system damage from water

hammer or sudden shock, open supply valves slowly.

If you are uncertain about the product’s adaptability for
your application, please call the factory or
authorized representative before using the product.

INSTALLATION

Steam
Supply

Globe Valve Recommended

For Throttling Purposes

Optional By-Pass Line

Series 754

Pressure
Reducing
Regulator

By-Pass

Inlet

Relief
Valve

Y Strainer

Y Strainer

F&T
Trap

Gate

Valve

Gate

Valve

1. Determine where to install the regulator, based

on the following requirements:

a. The regulator must be installed where it can

be accessed for adjustment and repair.

2. Install the following ahead of where the regulator

will be installed.

D

a. A drip trap (A), Y-strainer (P) and gate valve

(R). This insures dry steam.

b. A gate valve (C), Y-strainer (H), pressure

gauge (D), and union (E) in the inlet piping
(F).

c. Install a gate valve (G) in the Y-strainer (H)

for blow down.

• To prevent serious burns, the internal pressure of the regulator must be 0 psi (0 bar)
before servicing.

• Connect a pipe to the blow down valve in such a way as to prevent exposure and injury
from discharge.

Failure to follow this caution will cause personal injury.

3a.Cap off the outlet pipe (J).

WARNING

!

H

C

F

A

P

R

G

E

b. Open the Y-strainer’s blow down gate valve (G).

c. Slowly turn steam on with full pressure for five (5)

minutes to blow down the inlet pipe (F).

d. Turn off steam and allow pipe to cool.

e. Remove cap from the outlet pipe (J) and

close the Y-strainer’s blow down gate valve (G).

F

J

G

Pipe Opening