Bell & Gossett V59075B User Manual

INSTRUCTION MANUAL

V59075B

Low Flow Model UBYL

Y-Strainer Combination Valve

INSTALLER: PLEASE LEAVE THIS MANUAL FOR THE OWNER’S USE.

NOTE: This product is not intended for use in potable

water applications.

WARNING: This product may contain a
chemical known to the State of California
to cause cancer, or birth defects or other
reproductive harm.

This safety alert symbol will be used in
this manual to draw attention to safety
related instructions. When used, the

safety alert symbol means ATTENTION!
BECOME ALERT! YOUR SAFETY IS INVOLVED! FAILURE
TO FOLLOW THE INSTRUCTIONS MAY RESULT IN A
SAFETY HAZARD.

OPERATIONAL LIMITS

WORKING PRESSURE & TEMPERATURE LIMITS
(SOLDER TYPE LIMITS FOR ANSI STD. B.16.18)

COIL HOOKUP VALVE TEMP °F (°C) PRESSURE PSI (KPA)

Y-Strainer Valve (NPT) 250° (121°) 400° (2758°)
Y-Strainer Valve (sweat) Based on solder type ASTM Std.
B16.18

TYPE OF
SOLDER

95-5
TIN­ANTIMONY

MAXIMUM LIMITATIONS 1/2” - 3/4”

PRESSURE
PSI (kPa)

300 (2069) 200° (93°)
250 (1724) 225° (107°)
200 (1379) 250° (121°)

TEMP
° F (° C)

DESCRIPTION

Low Flow Y-strainer Valves are made of brass construction
with an integrated ball valve and strainer.

INSTALLATION INSTRUCTIONS

CAUTION: Heat associated with the use of

silver solder may damage valve components
and void the product warranty. Do not use

silver solder. Failure to follow these
instructions could result in property damage and/or
moderate personal injury.

Model UBYL Low Flow Y-strainer Valves are uni-directional
valves and should be mounted in the supply pipe. Be
sure to install the Model UBYL Low Flow Y-strainer valve
with the arrow pointing in the direction of flow and the
strainer chamber down to prevent air binding and to al­low materials to collect in the strainer. Be sure to provide
enough space around the valve to remove the strainer
from the valve body for cleaning.

LOW FLOW MODEL UBYL Y-STRAINER VALVES
WITH SWEAT CONNECTIONS

For installing sweat connections:

a) Clean tube ends and valve connections thoroughly per
good piping practices with a fine grade emery cloth or
fine grit sandpaper.

b) For soldering, use 95-5 (Tin-Antimony) solder and a
good grade of flux.

c) Use a torch with a sharp pointed flame.

d) When sweating the joints, adjust the valve to the full
open position, then wrap the valve with a cool wet rag
and then direct the flame with care to avoid subjecting
the valve to excessive heat. Allow the valve to cool before
touching or operating.

e) Check the soldered connection for leaks.

WARNING: Use of improper procedures to
sweat valve model with union
connection into system can damage valve.

Before installing sweat union connection
to valve, remove the union nut and O-ring from the
valve body, then union tailpiece with union nut must
be sweated (soldered) into place. Failure to follow this
instruction could result in property damage and/or
moderate personal injury.

CAUTION: Excessive use of solder or flux
may result in damage to the shutoff valve
seat and ball. Do not use excessive solder or

flux. Failure to follow these instructions
can result in moderate personal injury and/or property
damage.

LOW FLOW MODEL UBYL Y-STRAINER VALVES
WITH NPT CONNECTIONS

Apply pipe compound conservatively to male connecting
fittings only. After installation, check all joints for
leakage and re-tighten if necessary.

CAUTION: The use of PTFE impregnated
pipe compound and PTFE tape on pipe
threads provides lubricity. Care should be

taken to prevent over tightening
which may damage the valve body. Failure to follow
these instructions can result in personal injury and/or
property damage.

OPERATION INSTRUCTIONS

HOW TO USE BELL & GOSSETT LOW FLOW
MODEL UBYL Y-STRAINER VALVES

Y-strainer can be used to isolate hydronic equipment for
repairs and/or to drain the system. To close the Y-strainer
ball valve, move the handle a quarter of a turn until the
handle is perpendicular to the valve and piping.

CAUTION: Hot un-insulated surfaces can
cause burns to the skin. Do not touch hot
surfaces. Failure to follow these instructions
could result in personal injury.