Warren Controls 313 Guide

INSTALLATION, OPERATION
& MAINTENANCE INSTRUCTIONS
313 OVERFLOW TRAP
LEVEL CONTROLS 313 IOM
TABLE OF CONTENTS
Overview .................................................Cover
General Information............................Cover
Installation .......................................................4
Operation .........................................................4
Maintenance ...................................................4
Float Ball Level Test Procedure .................5
Float Ball Level Adjustment Procedure..6
Information Present on 313's....................7
Overflow Trap Specifications.....................8
Overhaul / Parts Kits...........................9 & 10
Drawings..................................................11-14
This document covers the installation, operation and maintenance
of 313 Overflow Traps presented in the “Level Controls and
Accessories”, Product Specification.
The instructions given herein cover generally the operation and
maintenance of subject equipment. Should any questions arise
which may not be answered specifically by these instructions,
they should be referred to Warren Controls Inc. for further detailed
information and technical assistance. This manual cannot possibly
cover every situation connected with the operation, adjustment,
inspection, test, overhaul and maintenance of the equipment
furnished. Every effort is made to prepare the text of this manual
so that engineering and design data is transformed into the most
easily understood wording. Warren Controls Inc., in furnishing this
equipment and this manual, must presume that the operation and
maintenance personnel assigned thereto have sufficient technical
knowledge and experience to apply sound safety and operational
PRODUCT OVERVIEW
practices which may not be covered herein. In applications where
Warren Controls Inc. furnished equipment is to be integrated with a
process or other machinery, these instructions should be thoroughly
reviewed to determine the proper integration of the equipment into
the overall plant operational procedures. Warren Controls does not
assume responsibility for the selection, use, or maintenance of any
product. Responsibility for proper selection, use, and maintenance
of any Warren Controls product remains solely with the purchaser
and end-user.
GENERAL INFORMATION
313_IOM_RevC_0418

22600 Emrick Blvd • Bethlehem, PA 18020 • USA •800-922-0085 • www.warrencontrols.com
WARNING
CHECK OVERFLOW TRAP FOR ANY
DAMAGE DUE TO IMPROPER STORAGE OR
TRANSPORTATION. IMMEDIATELY NOTIFY
YOUR SALES ORGANIZATION OF ANY
DAMAGED GOODS UPON RECEIPT. DO
NOT ATTEMPT TO MOVE OR DISTURB THE
OVERFLOW TRAP FURTHER SO PHOTOS MAY
BE TAKEN. IF THE SHIPPING CONTAINER IS
NOTICEABLY DAMAGED REFUSE RECEIPT, AS
THE SHIPPING COMPANY SHOULD BE HELD
LIABLE UNTIL A SHIPPING REPRESENTATIVE IS
AVAILABLE TO TAKE PHOTOS.
!

3
Level Controls - IOM 313 313_IOM_RevC_0418
The following is a typical example of a tank filling/deaerator application using properly sized, selected, and maintained Warren
Controls Level Controls. Demand for water reduces the liquid level in the tank. The [A] 377 Float Cage opens the [B] 322L or 326L
Lever Valve to supply intake water to the tank. When the water reaches the desired level the float cage closes the lever valve
to accurately maintain the liquid at the desired level. Deaerators, tanks with steam blankets, produce additional liquid as
the steam condenses. The [C] 313 Overflow Trap traps and relieves this condensate through its internal pilot without
the steam blanket escaping. Overflow can occur if the water entering the tank exceeds its capacity. The 313 Overflow
Trap relieves the overflow through its internal single seated main stage valve. Falling liquid levels and condensing steam
can cause a vacuum that can damage the tank. The [D] 200 Vacuum Breaker opens to admit outside air to relieve the vacuum in
the tank. Warren Controls Level Controls are also used on boiler make-up water tanks and many other storage tank applications.
WARREN CONTROLS
LEVEL CONTROLS AT WORK...

42600 Emrick Blvd • Bethlehem, PA 18020 • USA •800-922-0085 • www.warrencontrols.com
INSTALLATION – TYPE 313 OVERFLOW TRAP
MAINTENANCE – TYPE 313 OVERFLOW TRAP
• To determine which 313 Overflow Trap you have locate
the part number on the factory serial number label (See
Information Present on 313 Overflow Trap section for
location of important information on overflow traps).
Then see 313 Overflow Trap Specifications section to
determine the performance and physical characteristics
of the overflow trap).
• Theoverflowtrapmustbeinstalledinverticalpipewith
its inlet up as shown on the installation orientation label
(See Information Present on 313 Overflow Trap section
for location of important information on overflow
traps).
• Downstreampipingmust be open to atmosphere as
close as possible to output of 313.
• Eliminate vibration in piping. 313 Overflow Traps are
not suitable in installations where vibration exists.
• Before installing, be sure the 313 Overflow Trap and
piping are clean inside and free of scale, chips, welding
spatter, and foreign material. Thoroughly blow out or
flush pipe lines.
• Donotobscurefactoryserialnumberlabelorinstallation
orientation label with paint.
• Pipe plug must be installed in float chamber during
operation.
OPERATION – TYPE 313 OVERFLOW TRAP
• Deaerators,tankswithsteamblankets,producecondensateasthesteamcondenses.The313OverflowTraptrapsand
relieves this condensate through its internal pilot while keeping the steam blanket from escaping. Overflow can occur if the
water entering the tank exceeds its capacity. The 313 Overflow Trap relieves the overflow through its internal single seated
main stage valve. Buoyancy of the overflow trap’s internal float ball provides force to actuate the internal pilot operated
single seated valve assembly to relieve condensate and overflow to drain. It is normal for condensate to intermittently flash
to steam as it is relieved to the drain. Steam from the steam blanket however should not be continuously exiting the overflow
trap to the drain.
• 313 Overflow Traps for the most part are
maintenance free when sized and chosen properly
for the application. Maintain the fluid pressure,
pressure drop, and temperature within the limits
of the overflow trap (See Information Present on
313 Overflow Trap section for location of important
information on overflow trap and 313 Overflow Trap
Specifications section to determine the performance
and physical characteristics of the overflow trap).
• Theinletandoutletoftheoverflowtrapmustbekept
unblocked. The internal pilot operated single seated
valve assembly must be kept free of debris, deposits,
and dirt. The internal pilot operated single seated
valve assembly must move freely. The float ball must
not become filled with water. The float lever must be
straight. Factory set-up of the overflow trap is shown
on drawing 03130611101.
• Thewaterlevelinsidethefloatchambermustcover
the windows in the valve body in order for the main
stage to open.
• Perform Float Ball Level Test during scheduled
maintenance periods. Float ball level must be correct
for water to be at correct level in the float chamber.
A set-up fixture may also be fabricated as shown on
drawing 03130614111 to test and set the float ball
level.
• Pipeplugmustbeinstalledinfloatchamberduring
operation.

5
Level Controls - IOM 313 313_IOM_RevC_0418
OVERFLOW TRAP SIZE FLOAT BALL LEVEL
1
BOTTOM OF FLOAT BALL
BETWEEN 0.0 INCHES ABOVE AND 0.168 INCHES ABOVE
BOTTOM OF VALVE BODY
1-1/2 & 2
BOTTOM OF FLOAT BALL
BETWEEN 0.340 INCHES BELOW AND 0.112 INCHES BELOW
BOTTOM OF VALVE BODY
3
BOTTOM OF FLOAT BALL
BETWEEN 0.050 INCHES BELOW AND 0.118 INCHES ABOVE
BOTTOM OF VALVE BODY
4
BOTTOM OF FLOAT BALL
BETWEEN 0.080 INCHES BELOW AND 0.102 INCHES ABOVE
BOTTOM OF VALVE BODY
6
BOTTOM OF FLOAT BALL
BETWEEN 0.590 INCHES ABOVE AND 0.720 INCHES ABOVE
BOTTOM OF VALVE BODY
1) Remove line pressure and isolate overflow trap. (It is recommended that you have an Inspection Kit on hand
before beginning the procedure.)
2) Remove nuts and bolts from end cover.
3) Remove end cover from float chamber.
4) Remove end cover gasket.
5) Remove capscrews holding valve body to float chamber.
6) Remove internal valve assembly with float ball from float chamber.
7) Install internal valve assembly with float ball in float chamber with float ball extending out of the open end of the
float chamber. Use clamps to secure internal valve assembly with float ball to float chamber.
8) With piston disc seated in valve body and pilot assembly seated on piston disc, measure vertical distance from
bottom of float ball to bottom of valve body.
9) Compare measurement to values in Float Ball Level Table. If measurement is within the range of values in
table complete remaining steps. If measurement is not within range of values in table perform Steps 8 thru 20 of
Float Ball Level Adjustment Procedure, found on page 6.
10) Remove clamps and remove internal valve assembly with float ball from float chamber.
11) Remove valve body gasket.
12) Clean gasket surfaces of end cover, valve body, and float chamber.
13) Install new valve body gasket in float chamber.
14) Install internal valve assembly with float ball in float chamber. Watch orientation.
15) Install capscrews in valve body and tighten to secure valve body to float chamber.
16) Install new end cover gasket on float chamber.
17) Install end cover on float chamber.
18) Install nuts and bolts in end cover and tighten to secure end cover to float chamber.
FLOAT BALL LEVEL TEST PROCEDURE

62600 Emrick Blvd • Bethlehem, PA 18020 • USA •800-922-0085 • www.warrencontrols.com
FLOAT BALL LEVEL ADJUSTMENT PROCEDURE
1) Remove line pressure and isolate overflow trap. (It is recommended that you have an Inspection Kit on hand
before beginning the procedure.)
2) Remove nuts and bolts from end cover.
3) Remove end cover from float chamber.
4) Remove end cover gasket.
5) Remove capscrews holding valve body to float chamber.
6) Remove internal valve assembly with float ball from float chamber.
7) Install internal valve assembly with float ball in float chamber with float ball extending out of the open end of the
float chamber. Use clamps to secure internal valve assembly with float ball to float chamber.
8) Remove cotter pin and clevis pin from lever bracket. Separate float lever from lever bracket.
9) Loosen jamnut on lever bracket.
10) Adjust engagement of lever bracket with lever bracket base so float ball level is within range of values shown in
Float Ball Level Table with piston disc seated in valve body and pilot assembly seated on piston disc, when clevis
pin, cotter pin, and float lever are reinstalled in lever bracket.
11) Tighten jamnut to secure lever bracket to lever bracket base. Float lever must not bind in lever bracket.
12) Remove clamps and remove internal valve assembly with float ball from float chamber.
13) Remove valve body gasket.
14) Clean gasket surfaces of end cover, valve body, and float chamber.
15) Install new valve body gasket in float chamber.
16) Install internal valve assembly with float ball in float chamber. Watch orientation.
17) Install capscrews in valve body and tighten to secure valve body to float chamber.
18) Install new end cover gasket on float chamber.
19) Install end cover on float chamber.
20) Install nuts and bolts in end cover and tighten to secure end cover to float chamber.
OVERHAUL
Rebuilding of the overflow trap should not be necessary under normal operating conditions. Should the overflow
trap become worn or damaged, parts kits are available. See Parts/ Overhaul.

7
Level Controls - IOM 313 313_IOM_RevC_0418
INFORMATION PRESENT ON 313 OVERFLOW TRAP
FACTORY SERIAL
NUMBER LABEL
INSTALLATION
ORIENTATION LABEL
INFORMATION PRESENT ON 313 OVERFLOW TRAPS
PART NUMBER & SERIAL NUMBER
Information Symbol(s) Location Notes
Part number P/N On end cover •On Factory Serial Number Label attached to end cover.
Serial Number SERIAL NO. On end cover
and valve cover
•On Factory Serial Number Label attached to end cover.
•Sales order number only stamped on valve cover.*
* Number stamped using approximately 1/8 inch tall characters
INSTALLATION ORIENTATION
Information Symbol(s) Location Notes
Top of overflow trap TOP On tank •On Installation Orientation Label attached to side of tank.
Up direction UP On tank •On Installation Orientation Label attached to side of tank.
There is information present on each overflow trap ranging in importance from the part number and serial
number to numbers stamped on the tank. This information is important for identifying the overflow trap,
installing it correctly, and obtaining parts. An example of the current factory serial number label used on
313 overflow traps is shown here. The accompanying table identifies the information present and where to
find it on the overflow trap. There may also be other numbers and marks present that do not provide useful
information. Customer specific tagging may also present. The labels or plates used, and information present,
on Warren Controls other product lines or older overflow traps may be different, contact the factory for details.

82600 Emrick Blvd • Bethlehem, PA 18020 • USA •800-922-0085 • www.warrencontrols.com
APPLICATION
Deaerators, tanks with steam blankets, produce additional liquid
as the steam condenses. The 313 Overflow Trap traps and relieves
this condensate through its internal pilot without the steam
blanket escaping. Buoyancy of its float ball provides force to
actuate internal pilot operated single seat valve assembly to
relieve condensate and overflow to drain. The overflow trap
should be installed in an upright position.
FEATURES
Steel chamber, brass/bronze internal valve,
316 stainless steel float ball.
Sizes 1” through 2” with NPT connections,
3” through 6” with 150FLG
Large end cover provides easy access to internal valve assembly.
RATINGS
System operating pressures to 50 PSIG
Pressure drops to 15 PSI
Temperatures to 250F
Nominal leakage rate 0.1% of rated capacity
3” 313
Brass/bronze internal valve assembly with 316 stainless
steel float ball and float arm shown separately
Serial number label located here
Sales order (serial) number label stamped here
313 OVERFLOW TRAP SPECIFICATIONS
WEIGHTS
For dimensions see drawing 03130611101.
313 Part Number
Description Size End Connection Part Number
STEEL BODY WITH
BRONZE TRIM AND
316 ST. STL. FLOAT
BALL
1 NPT 031306XXX001
1-1/2 NPT 031308XXX001
2 NPT 031309XXX001
3 150FLG 031311XXX001
4 150FLG 031313XXX001
6 150FLG 031315XXX001
PRESSURE
DROP POUNDS / HOUR FLASHING CONDENSATE
(PSI)
Valve Size (IN)
1 1-1/2 2 3 4 6
1 4,500 10,800 20,400 35,500 62,000 132,000
2 6,400 15,400 28,700 50,000 88,000 187,000
4 9,000 21,600 40,400 70,500 123,500 262,000
5 10,000 24,000 45,000 78,500 138,000 293,000
7 11,870 28,500 53,300 93,000 163,000 346,000
10 14,200 34,100 63,700 111,200 196,000 415,000
12 15,600 37,400 69,900 122,000 214,500 455,000
15 17,400 41,800 78,200 136,500 239,000 500,800
CONDENSATE CAPACITIES
Valve Size (IN)
1 1-1/2 2 3 4 6
Weight (lb) 53 95 95 111 173 285

9
Level Controls - IOM 313 313_IOM_RevC_0418
(REFER TO DRAWING 03130611101)
Damaged or worn parts can decrease performance and shorten the life of the overflow trap.
A damaged float ball can result in the inadequate removal of condensate and overflow.
A damaged or worn end cover gasket or inner valve body gasket can cause external leakage resulting in damage
to surrounding equipment and the loss of the steam blanket from the tank.
A damaged float lever can result in the inadequate removal of condensate and overflow or the loss of the steam
blanket from the tank.
A damaged or worn pilot subassembly can result in the inadequate removal of condensate and overflow or the
loss of the steam blanket from the tank.
A damaged or worn piston can result in the inadequate removal of condensate and overflow or the loss of the
steam blanket from the tank and can also cause damage to the valve body.
A damaged or worn inner valve body can result in the inadequate removal of condensate and overflow or the loss
of the steam blanket from the tank and can also cause damage to the piston disc.
A damaged or worn stem guide can result in the inadequate removal of condensate and overflow or the loss of
the steam blanket from the tank and can also cause damage to the pilot assembly.
A damaged or worn clevis, clevis pin, or fulcrum link can result in the inadequate removal of condensate and
overflow or the loss of the steam blanket from the tank.
Three different parts kits are available. The inspection kit allows for the overflow trap to opened so its internal
parts may be inspected. The float ball kit allows for the float ball to be replaced. The internal vba kit allows for the
entire internal valve body assembly, minus the float ball, to be replaced. The internal vba kit is preset at the factory
to provide the correct water level in the float chamber. Please provide serial number to get the correct kit or
individual part numbers.
313 OVERFLOW TRAP PARTS / OVERHAUL

10 2600 Emrick Blvd • Bethlehem, PA 18020 • USA •800-922-0085 • www.warrencontrols.com
(PLEASE PROVIDE OVERFLOW TRAP SERIAL NUMBER TO GET CORRECT KIT PART NUMBERS)
Three different parts kits are available. The inspection kit allows for the overflow trap to opened so its internal parts may be
inspected. The float ball kit allows for the float ball to be replaced. The internal vba kit allows for the entire internal valve body
assembly, minus the float ball, to be replaced. The internal vba kit is preset at the factory to provide the correct water level in the
float chamber.
313 INSPECTION KIT - SEE DWG 03130611101
ITEM QTY DESCRIPTION ITEM QTY DESCRIPTION
19 1 INNER VALVE BODY GASKET 23 1 END COVER GASKET
313 FLOAT BALL KIT - SEE DWG 03130611101
ITEM QTY DESCRIPTION ITEM QTY DESCRIPTION
4 1 FLOAT BALL 23 1 END COVER GASKET
19 1 INNER VALVE BODY GASKET
313 INTERNAL VBA KIT - SEE DWG 03130611101
ITEM QTY DESCRIPTION ITEM QTY DESCRIPTION
1 2 CAPSCREW 12 1 JAMNUT
2 A / R WASHER 13 1 LEVER BRACKET BASE
3 A / R CAPSCREW 14 1 INNER VALVE BODY COVER
5 1 FLOAT LEVER 15 1 INNER VALVE BODY
6 3 CLEVIS PIN 16 1 PILOT SUBASSEMBLY
7 3 COTTER PIN 17 1 STEM GUIDE
8 1 LEVER BRACKET 18 3 CAPSCREW
9 1 FULCRUM LINK 19 1 INNER VALVE BODY GASKET
10 1 CLEVIS 20 1 PISTON
11 1 JAMNUT 23 1 END COVER GASKET
313 KIT PART NUMBERS
SIZE
IN
PRECERTIFIED DESIGN PRE CD
OR CERTIFIED DESIGN CD INSPECTION KIT FLOAT BALL KIT
INTERNAL VALVE
BODY ASSEMBLY KIT
1 Pre CD K31306XXX004 K31306XXX001 K31306XXX000
1 CD K31306XXX005 K31306XXX003 K31306XXX002
1-1/2 & 2 Pre CD & CD K31309XXX004 K31309XXX003 K31309XXX002
3 Pre CD & CD K31311XXX004 K31311XXX003 K31311XXX002
4 Pre CD & CD K31313XXX004 K31313XXX003 K31313XXX002
6 Pre CD & CD K31315XXX004 K31315XXX003 K31315XXX002
313 OVERFLOW TRAP PARTS KITS

11
Level Controls - IOM 313 313_IOM_RevC_0418
DRAWING 03130611101-1

12 2600 Emrick Blvd • Bethlehem, PA 18020 • USA •800-922-0085 • www.warrencontrols.com
DRAWING 03130611101-2

13
Level Controls - IOM 313 313_IOM_RevC_0418
DRAWING 03130611101-3

14 2600 Emrick Blvd • Bethlehem, PA 18020 • USA •800-922-0085 • www.warrencontrols.com
DRAWING 03130614111

15
Level Controls - IOM 313 313_IOM_RevC_0418
NOTES

2600EMRICKBLVD•BETHLEHEM,PA18020•USA•800-922-0085•WWW.WARRENCONTROLS.COM
DEPENDABLE, RUGGED, PRECISION CONTROL VALVES AND ACCESSORIES
313_IOM_RevC_0418