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INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS 

 

 

CAUTION: 

Only qualified personnel should undertake the procedures outlined in this document. 

NIBCO INC., its agents, representatives and employees assumes no liability for the use of these 
procedures. These procedures are offered as suggestions only.

 

 

NIBCO Technical Services • Phone: 1.888.446.4226 • Fax: 1.888.336.4226 

N I B C O   I N C .

W O R L D   H E A D Q U A R T E R S

1 5 1 6   M I D D L E B U R Y   S T.

E L K H A R T,   I N   4 6 5 1 6 - 4 7 4 0

U S A

P H O N E :     5 7 4 . 2 9 5 . 3 0 0 0

F A X :     5 7 4 . 2 9 5 . 3 3 0 7

W E B :     w w w . n i b c o . c o m

Review Date:  01/18/2012 

Original Date:  NA 

 

Installation and Maintenance Guidelines for  

NIBCO

®

 Bronze Gate Valves 

1/4” to 3” Class 125, 150, 200, 300 and 175 WWP 

 

 

Figure Numbers 

T-103-HC 

T-104-O 

T-111-113 

S-111-113 

T-134-136 

S-134-136 

T-131 
T-133 
T-135 

T-154-A 
T-174-A 
T-176-A 

T-174-SS 
T-176-SS 

 
 
 
 
 
 
 
 

 
 
 
 

 
 
 
 
 

Summary of Contents for T-103-HC

Page 1: ... 888 446 4226 Fax 1 888 336 4226 1 N I B C O I N C W O R L D H E A D Q U A R T E R S 1 5 1 6 M I D D L E B U R Y S T E L K H A R T I N 4 6 5 1 6 4 7 4 0 U S A P H O N E 5 7 4 2 9 5 3 0 0 0 FA X 5 7 4 2 9 5 3 3 0 7 W E B w w w n i b c o c o m Review Date 01 18 2012 Original Date NA Installation and Maintenance Guidelines for NIBCO Bronze Gate Valves 1 4 to 3 Class 125 150 200 300 and 175 WWP Figure...

Page 2: ...screw in bonnet T 131 Class 150 threaded end rising stem screw in bonnet T 134 Class 150 threaded end rising stem union bonnet S 134 Class 150 solder end rising stem union bonnet T 135 Class 150 threaded end rising stem union bonnet split wedge T 136 Class 150 threaded end non rising stem union bonnet S 136 Class 150 solder end non rising stem union bonnet T 174 A Class 300 threaded end rising ste...

Page 3: ...om applicable ANSI or UL FMRC Standards F CODES REGULATIONS A valve used under the jurisdiction of the ASME boiler and pressure vessel code the ANSI code for pressure piping government or other regulations is subject to any limitation of that code or regulation and to the applicable ANSI Standard G PRODUCTION TEST PROCEDURES Valves are pneumatically shell tested and seat tested at a pressure of 80...

Page 4: ...ves have back seats between the shoulder of the stem and the valve bonnet This is a requirement of standards so that the valve may be repacked while the valve is under full pressure CAUTION This is dangerous and could result in serious injury It is not recommended by NIBCO In addition standards organizations and governing societies today do not encourage valves to be repacked while the valve is tr...

Page 5: ...t that it is necessary to remove the bonnet before the valve is put into a line either for brazing soldering or threading in it is always essential that the bonnet be removed with great care It is necessary that a chain wrench rather than a pipe wrench be used to loosen the bonnet union nut If at all possible it is more desirable to use a socket wrench to remove the nut The union nut body and bonn...

Page 6: ...ifficult operation of the valve and could cause damage to the stem or packing nut If the gland has run out of travel isolate and depressurize the valve for repacking or the addition of more packing Repacking of valves under pressure is not a recommended practice This is dangerous and could result in serious injury even if the valve appears to be back seated Foreign matter may have accumulated on t...

Page 7: ...rench or open end wrench may be used if extreme caution is used Pipe wrenches on union nuts or screw in bonnets have a definite crushing action which will deform the component and are not recommended A Standard packing tool can be used and or a blunt hook is generally used to remove packing rings A screwdriver can be used to raise the packing gland if it is in the fully down position and generally...

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