Model 48 Resilient Wedge Gate Valve

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Model 48 Resilient Wedge Gate Valve Application Designed for installation on potable water lines, Irrigation systems, Waterworks connections, and Fire systems. NRS GATES Standards Compliance AWWA Compliant C-509, C-550 UL Listed C-UL Listed FM Approved Certified to NSF/ANSI 372* by IAPMO R&T *(0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT) OS&Y GATES FxF GxF GxG Materials Main body Ductile Iron ASTM A 536 65-45-12 & Handwheel Ductile Iron ASTM A 536 65-45-12 Covers Ductile Iron ASTM A 536 65-45-12 Wedge Ductile Iron ASTM A 536 65-45-12 W/EPDM Coatings AWWA Compliant fusion-bond epoxy finish Internals Stainless steel ASTM A 276 UNS S41000/ S42000 Brass, ASTM B 584 UNS C83600 Fasteners Zinc plated steel Grade 8.8 Brass, ASTM B 584 UNS C83600 Elastomers Stem EPDM (FDA approved) Bronze, ASTM B 150 UNS C61400 or Stainless steel ASTM A 276 UNS S43100 Features Sizes: 2 1/2", 3", 4", 6", 8", 10", 12" Maximum working water pressure 200 PSI Maximum working water temperature 140 F Hydrostatic test pressure 400 PSI End connections (Grooved for steel pipe) ANSI/AWWA C606 (Flanged) ANSI/ASME B16.1 Options - NRS with flanged end connections (standard) G - NRS with grooved end connections GXF - NRS with grooved x flanged end connections PI - NRS with Post Indicator connecting flange (refer to specification sheet BF-PIWILKINS) OP - NRS with square operating nut OSY - OS&Y with flanged end connections OSYG - OS&Y with grooved end connections OSYGXF - OS&Y with grooved x flanged end connections Accessories OS&Y gate valve tamper switch (OSY-40) (OS&Y FXF SHOWN) E D Dimensions & Weights (do not include pkg.) A B TAP C! " #! $ % & " #! " ' " & " & ( " " # " $ " & " " " #!! '! " & ) # * * % " " % ) # ( ) ' " & & # (! + + ) ( + (! + ) & " #! " ' " ) # * " ' "! ) # * )! *! + " # * % " * " & * )! " + " # *! $ + * " + + '!! ' '!! ' " % # " $! * " * " #! ) $ (!! " #! % &! " ( " # * * $ * " + " # *! $ + $ " % + " + " #!! $ & " "! & ' "! % " ( * % & ) + " #! & & %! * " # * $ " $ "! " #! ) " ( (! + + " " " #!! '! " ) " #! ) * ) " " # (! '! " " # ( % ) & ) & ' * +! ( " #! &! * " * ) # * ) & % " +! % + " ) ) ) + " $ * + $ " ) # " $ ) +! * ) # * $! ' * % % # ( " " % ' ) * ) # * ( ( ) " $ ) # ( * " $ "! ) + + " * ) % $ " ' * ( ) " " # * )!! ( & " " % ) " ) * $ * + " #! " +! ' " & " #! * * % 3 4 5 0, / - A B 0 6 8 C C D E F G H 8 = ;?, -. / 6 7 8 9 : ; < : 8 = ; >? I J, 6 K L K? I J, 6 A L K? I J @, 6 A L A? 4, M N 6 K L K? 4, M N 6 A L K? 4, M N 6 A L A? 0 1 2, -. / P O Q R S R S R S R S R S R S! " #! $ % " #! T " * U V * % # ( ) $ " $! & "!!! " + * %! " ) $ " $ ) " " * ) ( + " #! T " * U V * % # ( % +! ) ) % " $! ' " ) $ ( ) " * *! + ) ( " & * " + + " #! T " * U V ( % # ( &! ) ) $ )! ' % )! * ( ( * + ( " ) & $ ' ) " $ " % + ) # * T " * U V ( ) # * " " % %! " + " * $ ( $ ) ' " * ) $ % " ) + % ' " " ' % * (! + + ) # * T " * U V ( ) # * " ' ( ' + " ( " (! " $ " & )! * $ " "!!!! " + " " ' % ( ' " +! % + ) # * T " * U V "! & # ( ) + * " ) (! & " "! )! * % " " " ) %! " $ + ) " ' " * %! ' + " )! "! ) + + ) # * T " * U V "! & # ( *! % " ' ) ) ( * " & * T T * ( &!! " * ) & " ' ( T T BOLTS Rev. E Date: 10/14 Document No. GV-48WILKINS Product No. Model 48 Page 1 of 8

ZURN WILKINS Model 48 Resilient Wedge Gate Valve Maintenance Procedures Valve Identification The ZURN WILKINS Model 48 Resilient Wedge Gate Valve can be distinguished from other gate valve brands by observing the unique lettering on the valve body. One side designates the valve size, model, pressure rating, year of manufacture, and the UL/FM logos. The opposite side displays the valve size and ZURN WILKINS in vertical lettering. See pictures below. Gate valves that do not contain the name ZURN WILKINS in raised cast letters on the valve body are not ZURN WILKINS brand. Installation Instructions CAUTION: Installation of ZURN WILKINS Model 48 Gate Valves must be performed by qualified, licensed personnel. 1. Cycle valve open and closed to ensure proper operation. Check that valve end connections are clean. Fully close valve prior to installation. NOTE: For OS&Y valves, a small amount of packing rubber may exit the valve via the stem during initial operations. This is normal and does not affect valve performance. If stem leakage occurs, lightly tighten bronze gland nuts evenly until leakage stops. 2. Install valve per proper methods according to end connection type. 3. If used in buried service, a valve box or vault should be provided for each valve. 4. Ensure all bolts are sufficiently tight prior to pressurization. 5. Once pressurized, open valve and thoroughly flush line to remove debris. 6. Inspect valve for external leaks. If a leak is detected, see TROUBLESHOOTING section. 7. Fully close valve and listen for leaks past the wedge. If a leak is detected, see TROUBLESHOOTING section. 8. Fully open valve. ZURN WILKINS Model 48 Gate Valve is now in service. W X Y Z Y [ \ ] \ Y ^ _ ` a b X ^ \ ^ c d e \ [ Z X Y f g h ] h Y ^ ] b \ ^ [ h e i j \ h b k [ l ^ Y m ^ ] Y ] e i n ] b ] i Y o p b k \ o Y X ^ \ b ] Y h b g [ i h b ^ h i X Y X q \ X ] e f i o i h ] [ Y X Y ] e i X X i Z X Y f g h ] \ r i e b X j s Page 2 of 8

Maintenance Instructions All ZURN WILKINS Model 48 Gate Valves must be inspected and maintained by qualified, licensed personnel at least once a year or more frequently as specified by local codes. Replacement of worn or damaged parts must only be made with genuine ZURN WILKINS parts. Servicing Wedge and Bonnet Seal: 1. Shut off main water supply. If servicing a gate valve attached to the downstream side of a backflow preventer, the upstream shut-off valve may be closed instead of the main water supply. 2. Relieve line pressure. 3. Remove bonnet nuts and bolts. 4. Slowly lift and remove bonnet assembly and wedge from valve body. 5. Clean all parts thoroughly after disassembly. 6. Carefully inspect bonnet seal and wedge for wear or damage. Replace if worn or damaged. 7. Carefully inspect body interior seating surface for coating damage and foreign debris. Clean seating surface or replace valve if necessary. 8. Reinstall wedge and bonnet assembly. 9. Tighten down bonnet nuts and bolts evenly. Do not over tighten. Servicing Gland Stuffing Box (OS&Y): 1. Make sure gate valve is fully open. 2. Remove gland nuts. 3. Raise gland and gland bushing. 4. Remove packing rings from stuffing box using a small pick or similar device. 5. Replace worn or damaged packing rings. 6. Lower gland and gland bushing and lightly tighten gland nuts. 7. Cycle valve fully closed to fully open. 8. If there is stem leakage, tighten gland nuts until leakage stops. Servicing Stem Seals (NRS): 1. Shut off main water supply and relieve line pressure. 2. Remove the bolt and washer retaining the operating nut/handwheel. 3. Remove operating nut/handwheel. 4. Remove gland flange bolts and gland flange. 5. Remove stem by turning stem clockwise. 6. Replace stem o-rings, gland flange o-ring, wiper ring, and thrust washers if necessary. 7. Reassemble in reverse order. Troubleshooting PROBLEM 1. Body Leakage 2. Seat Leakage 3. Stem Leakage POSSIBLE CAUSES 1. Loose bonnet bolts 2. Dirty or damaged bonnet seal 1. Foreign debris caught in seat 2. Dirty/corroded seat 3. Damaged seat 1. Packing nuts loose 2. Stem o-rings worn (NRS) 3. Packing rings worn (OS&Y) CORRECTIVE ACTION 1. Tighten bolts 2. Inspect bonnet seal. Clean or replace if necessary 1. Cycle valve and flush line 2. Flush line or disassemble and clean 3. Repair or replace valve 1. Tighten nuts 2. Replace stem o-rings 3. Replace packing rings Page 3 of 8

Replacement Parts ZURN WILKINS 2 1/2" - 12" NRS ASSEMBLY t u v w x y u z u { v x t } v x t { ~ z u t x w u } ƒ u u z u } y t v { ˆ Š Œ Ž w { w x x x x x x x w { x } u t y y y y y y y Š x { u u w { t } Œ { t } Œ { t } Œ Ž { t } Œ { t } Œ { t } Œ Š { t } Œ Š v { ~ { } { v Œ v Œ v Œ Ž v Œ Ž v Œ v Œ Š v Œ } u z t { v u t Š Š Š Ž Š Š Š Š Š w x { w x { u w y y y Ž y Ž y Ž y Ž y Œ w x { w x { u Ž Š w x { w x { u t { y y y Ž y Ž y y Š y } u z } u x w t { x x x Ž x x x Š x } u z } u x w ~ } { Ž Š Ž ~ v v u t t ~ } x } u t x x x Ž x x x Š x } u z Ž Š w u t t ~ } x } u t Ž Š Š } u z t { Ž Š { { u Ž Ž Ž Ž Ž Ž Ž Š Ž { { u w Ž Œ { { u x } u t Ž Ž Ž Ž } u z { ~ x x x Ž x x x Š x u u Ž Š { { u } u x w Ž Š Ž w w Ž Ž Ž Ž Ž Ž Ž Ž Ž Ž Ž Ž Ž Š Ž Ž Ž t w š œ ž Ÿ ž š ž Ÿ ž š ž Ÿ ž š ž ž Ÿ ž š ž ž ž Ÿ ž š ž ž Ÿ ž š ž ž Ÿ ž Ž t t Ž Ž Ž Ž Ž Ž Ž Ž Ž Ž Ž Ž Ž Š Ž Ž { { u w y x } u t u u u Ž u Ž u Ž u Ž u { { u { ~ Ž Ž Ž Ž Š v v w x u { } { Š v v w x u w { } { y y EXPLODED ISOMETRIC VIEW ON NEXT PAGE Page 4 of 8

ZURN WILKINS 2 1/2" - 12" NRS ASSEMBLY 1 2 3 3 OPERATING NUT (NOT SHOWN) 4 5 6 7 8 9 8 10 11 12 16 13 14 15 17 18 19 21 20 NOT SHOWN 23 POST INDICATOR PLATE 24 POST INDICATOR PLATE BOLTS 22 Page 5 of 8

ZURN WILKINS 2 1/2" OS&Y ASSEMBLY 1 ª «««± ² ² ³ «ª µ 2 µ µ µ ¹ º» ¹ ¼ º ½ ¾ À Á ½ Â Â Ã Ä Å Æ Ç È ³ É Ê ¹ ½ ¾ À Á ½ Â Â Ã Ë Ì Å Í ½ Ì Á Î Æ Ç È ³ É Ï Ð Í Â Å Í Ñ Ò Â Á Æ Ç È ³ «É º º 3 4 Æ Ò Â Å ¾ Ó Â Ò Æ Ç È ³ É Ð Ô Õ Ì Ö Â Ä Í ½ Ó Ø Æ Ç È ³ «É Æ Ï Ø Ã ¾ À Ä Å Æ Ç È ³ «É Ê È Ø Ã ¾ À Ù Ì Ã Ã Ì Á Â Ò Æ Ç È ³ É Ç 5 6 Ç Õ Ì Ö Â Ä Å Æ Ç È ³ ² É Ê Ê Õ Ì Ö Â Æ Ç È ³ ² É ¹ Ú º Ú Ø Ã ¾ À Ä Í ½ Ó Ø Æ Ç È ³ ² É Æ º º Û ¾ Ñ Ö Ó Ø Ò Ó Ø Æ Ç È ³ É ¹ ¹ º ¹ Ø Ã ¾ À Ì Ã Å Æ Ç È ³ É º º º Ð Ì Â Å Ì Ã À Æ Ç Ê ² É º º º Æ Ì Â Å Á ¾ Í ½ Â Ò Æ Ç Ê É º Æ º Ô Ì Â Å Æ Ç È ³ «É ¹ Ú º Ï Í Å Â Ü Ì Ý Ò Ó Ø Æ Ç È ³ ² É ¹ ¹ º È Í Å Â Ü Æ Ç È ³ É Ô º Ç Á  À Ø Â Æ Ç È É º Ç 9 10 3X 11 12 7 8 º Ê Ì Â Å Í Â ¾ Ã Æ Ç È É ¹ ¹ ¹ Ú Ì À Õ Ý Ù Ã Ø Þ Ù Ã Ø Æ Ç È É º É Ú º Ú ß ¹ Ú Ì À Õ Ý Ø Ò à Þ Ù Ã Ø Æ Ç È É º á â ß É Ú º Ú ß 13 ¹ Ú Ì À Õ Ý Ø Ò à Þ Ø Ò à Æ Ç È É º á É Ú º Ú ß ¹ º Ì Â Å Ã Ì Ñ Ö Á ¾ Í ½ Â Ò Æ Ç Ê É º Æ ¹ ¹ Ì Â Å Ä Å Æ Ç Ê ² É Ê 15 16 14 17 18 19 22 20 21 Page 6 of 8

ZURN WILKINS 3" - 12" OS&Y ASSEMBLY ã ä å æ ç è ä é ä ê ë å ç ã ë ì å ç ã ë ê í é î ä ã î ï ð ç æ ð ä ì ñ ò ä ñ ë ä é ó ä ì è ã ñ å ë ñ ô ê õ ö ö ø ö ù ö ú û ö ú ü ö ú ý ç ê ó þ ý ä ä æ ê í ë ù ÿ ô ì ï è ÿ ù ÿ ô ì ï è ÿ ù ú û ô ì ï è ÿ ù ú ú ô ì ï è ÿ ù ú ú ô ì ï è ÿ ù ú õ ô ì ï è ÿ ü ý ç ê ó þ ý ä ä æ ù ÿ ô ì ï ø ù ÿ ô ì ï ø ù ú û ô ì ï ø ù ú ú ô ì ï ø ù ú ü ô ì ï ø ù ú õ ô ì ï ø õ ì ä ë ì è ã ä þ ù ô ì ï ç ú ú ù ô ì ï ç ú ú ù ô ì ï ç ú ú ù ô ì ï ç ú ú ù ô ì ï ç ú ú ù ô ì ï ç ú ú ã ä ë ç ñ ê ä ã ù ÿ ô ì ï õ ù ÿ ô ì ï õ ù ú û ô ì ï õ ù ú ú ô ì ï õ ù ú ü ô ì ï õ ù ú õ ô ì ï õ ï ô ä î í ì ý ñ ê ù ÿ ô ì ï ç ù ÿ ô ì ï ç ù ú û ô ì ï ç ù ú ú ô ì ï ç ù ú ü ô ì ï ç ù ú õ ô ì ï ç ø ï ô ä ù ÿ ô ì ï î ü û ù ÿ ô ì ï î ü û ù ú û ô ì ï î ü û ù ú ú ô ì ï î ü û ù ú ü ô ì ï î ü û ù ú õ ô ì ï î ü û ï ô ä î ô æ ë ù ÿ ô ì ï ó ú ú ù ÿ ô ì ï ó ú ú ù ú û ô ì ï ó ú ú ù ú û ô ì ï ó ú ú ù ú û ô ì ï ó ú ú ù ú û ô ì ï ó ú ú ù æ ç ê ó ê í ë ù ÿ ô ì ï ç ÿ ù ÿ ô ì ï ç ÿ ù ú û ô ì ï ç ÿ ù ú û ô ì ï ç ÿ ù ú û ô ì ï ç ÿ ù ú û ô ì ï ç ÿ ÿ æ ç ê ó ô æ æ ô þ ä ã ù ÿ ô ì ï ù ù ÿ ô ì ï ù ù ú û ô ì ï ù ù ú ú ô ì ï ù ù ú ü ô ì ï ù ù ú õ ô ì ï ù ú û æ ç ê ó î í ì ý ñ ê ù ÿ ô ì ï î ù ÿ ô ì ï î ù ú û ô ì ï î ù ú ú ô ì ï î ù ú ü ô ì ï î ù ú õ ô ì ï î ú ú æ ç ê ó î ô æ ë ù ÿ ô ì ï è ú ú ù ÿ ô ì ï è ú ú ù ú û ô ì ï è ú ú ù ú ú ô ì ï è ú ú ù ú ú ô ì ï è ú ú ù ú ú ô ì ï è ú ú ú ü å ç è ñ ê ã ñ ê ù ÿ ô ì ï è ü ü ù ÿ ô ì ï è ü ü ù ú û ô ì ï è ü ü ù ú ú ô ì ï è ü ü ù ú ü ô ì ï è ü ü ù ú õ ô ì ï è ü ü ú õ î ô ê ê ä ë î ô æ ë ù ÿ î ú ú ù ÿ î ú ú ù ú û î ú ú ù ú ú î ú ú ù ú ú î ú ú ù ú ú î ú ú ú î ô ê ê ä ë þ ç ì ý ä ã ù ÿ ó ú ù ÿ ó ú ù ú û ó ú ù ú û ó ú ù ú û ó ú ù ú û ó ú ú î ô ê ê ä ë ù ù ô ì ï ç ü û ù ÿ ô ì ï ç ü û ù ú û ô ì ï ç ü û ù ú ú ô ì ï ç ü û ù ú ü ô ì ï ç ü û ù ú õ ô ì ï ç ü û ú ø ì ë ä é ô ã ñ ê ù ÿ ô ì ï î ü ü ù ÿ ô ì ï î ü ü ù ú û ô ì ï î ü ü ù ú ú ô ì ï î ü ü ù ú ü ô ì ï î ü ü ù ú õ ô ì ï î ü ü ú ì ë ä é ù ù ô ì ï ù ÿ ô ì ï ù ú û ô ì ï ù ú ú ô ì ï ù ú ü ô ì ï ù ú õ ô ì ï ú ù þ ä ó ä ù ù ú ù ù ÿ ú ù ù ú û ú ù ù ú ú ú ù ù ú ü ú ù ù ú õ ú ù ú ÿ î ô ê ê ä ë ì ä ç æ ù ù ó ü ü ù ÿ ó ü ü ù ú û ó ü ü ù ú ú ó ü ü ù ú ü ó ü ü ù ú õ ó ü ü ü û î ô ó ï æ æ ü û î ô ó ï ã ð æ ü û î ô ó ï ã ð ã ð ü ú î ô ê ê ä ë æ ô è þ ç ì ý ä ã ù ÿ ä ú ù ÿ ä ú ù ú û ä ú ù ú û ä ú ù ú û ä ú ù ú û ä ú ü ü î ô ê ê ä ë ê í ë ù ÿ î ÿ ù ÿ î ÿ ù ú û î ÿ ù ú û î ÿ ù ú û î ÿ ù ú û î ÿ EXPLODED ISOMETRIC VIEW ON NEXT PAGE Page 7 of 8

ZURN WILKINS 3" - 12" OS&Y ASSEMBLY 1 2 3 4 5 6 7 8 9 13 10 11 /5X # PER VALVE 12 3-4 : 4 PACKING RINGS { 6-12 : 5 PACKING RINGS 14 16 15 17 18 19 22 20 21 Page 8 of 8