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NIBCO INC. WORLD HEADQUARTERS • 1516 MIDDLEBURY ST. • ELKHART, IN 46516-4740 • USA • PH: 1.800.234.0227  

TECH SERVICES PH: 1.888.446.4226 • FAX: 1.888.234.0557 • INTERNATIONAL OFFICE PH: +1.574.295.3327 • FAX: +1.574.295.3455

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INSTALLATION, OPERATION, and MAINTENANCE GUIDE

NIBCO Adjustable Height Upright Indicator Posts

Series NIP-1AU

NIBCO Series NIP-1AU Adjustable Height Indicator Posts are designed and manufactured to: 

• 

Operate non-rising stem (NRS) post indicator valves (PIV) that are buried underground

• 

Operate multi-turn post indicator valves (PIV) with an operating range from 10 to 50 turns

• 

Visually indicate if the underground valve is in the OPEN or SHUT position

• 

Provide a means to lock the valve into a desired position (usually OPEN)

NIBCO Indicator Posts are listed by Underwriters Laboratories Inc. (UL), 

Underwriters Laboratories Inc. for use in Canada (C-UL), and approved 

by Factory Mutual Research Corp. (FM).

It is important to follow the instructions below to assure proper 

installation and safe trouble-free operation.  Failure to follow these 

instructions may result in reduced product performance and may cause 

loss of manufacturer’s warranty. 

1. Application

1.1  NIBCO Indicator Posts are primarily used with multi-turn non-rising stem (NRS) post indicator valves (PIV) controlling water 

supplies to sprinkler, deluge, water spray, foam, and standpipe systems used in fire protection service.

1.2  NIBCO Indicator Posts are designed for outdoor service and are coated with electrostatically applied fusion bonded epoxy 

resin to resist corrosion. 

1.3  NIBCO Upright Indicator Posts have a 20” adjustment range, and can be ordered to accommodate various bury depths.

1.4  NIBCO Indicator Post view targets are adjustable to accommodate valves of various sizes.  

1.5  NIBCO Indicator Posts are shipped for use with “left-hand” (counter-clockwise) opening valves.  

1.6  NIBCO Indicator Posts are designed to allow the attachment of a Control Valve Supervisory Switch for electronic monitoring 

of the OPEN valve position.  Simply follow the instructions provided with the Supervisory Switch for proper installation and 

operation.

1.7  NIBCO Upright Indicator Posts are designed to mate and bolt directly to the Post Indicator Valve (PIV) flange; four ¾” holes 

on a 10½” diameter bolt circle.

1.8  Indicator Posts should be inspected on a regular basis.

UINDP-0617

© 2017, NIBCO INC.

PATENT #US 9,541,218

Summary of Contents for NIP-1AU Series

Page 1: ...y result in reduced product performance and may cause loss of manufacturer s warranty 1 Application 1 1 NIBCO Indicator Posts are primarily used with multi turn non rising stem NRS post indicator valves PIV controlling water supplies to sprinkler deluge water spray foam and standpipe systems used in fire protection service 1 2 NIBCO Indicator Posts are designed for outdoor service and are coated w...

Page 2: ...IPE OD TURNS TO OPEN A B 1 2 PIPE OD INCH MM INCH MM INCH MM INCH MM INCH MM INCH MM 4 13 13 46 342 10 12 257 2 40 61 9 14 13 359 10 47 266 2 40 61 6 15 7 17 01 432 13 78 350 3 45 88 13 5 18 54 471 16 30 414 3 45 88 8 17 3 20 47 520 17 32 440 4 53 115 17 5 22 13 562 18 11 460 4 53 115 10 21 4 23 82 605 20 71 526 5 50 140 30 3 25 75 654 21 89 556 5 50 140 12 25 3 27 01 686 23 86 606 6 60 168 38 3 2...

Page 3: ... 72 1834 90 2291 108 2748 126 3205 16 MINIMUM 56 1414 74 1871 92 2328 110 2785 MAXIMUM 76 1922 94 2379 112 2836 130 3293 INCH DIMENSIONS SHOWN ARE ROUNDED TO THE NEAREST INCH 3 Installation of Upright Style Indicator Post 3 1 Fully OPEN the gate valve to which the Indicator Post is being attached 3 2 Loosen but do not remove 2 Body Bolts 35 3 turns Remove Barrel 32 and Body Base 31 from inside Cen...

Page 4: ... BLACK ASTM A1008 2 11 TARGET ROD BRASS ASTM B16 C36000 2 12 VIEW WINDOW POLYCARBONATE COMMERCIAL 2 13 GASKET WINDOW RUBBER ASTM D2000 EPDM 2 14 GUARD WINDOW CAST IRON ASTM B124 Gr B 2 19 SCREW HEX HEAD CAP STAINLESS STEEL S30400 4 20 WASHER STAINLESS STEEL S30400 4 21 SCREW SLOTTED FLAT HD STAINLESS STEEL S30400 4 22 PLUG 1 2 PIPE STEEL ZINC PLATED COMMERCIAL 1 23 U BOLT FORGED STEEL ASTM A105 1 ...

Page 5: ... and SHUT Target Adjustment 4 1 All NIBCO Indicator Posts are shipped for use with left hand counter clockwise opening valves 4 2 Remove two Nuts 4 and two T Head Bolts 3 that secure Cap 2 to Indicator Post See Fig 2 4 3 Grasp Cap 2 and remove from Indicator Post by lifting upward until Target assembly is clear 4 4 Target Plates 8 9 must be positioned with the OPEN Plate 8 above the SHUT Plate 9 f...

Page 6: ... STEEL S30400 4 37 SCREW SOCKET HD SET STAINLESS STEEL S30400 6 Table 5 Fig 5 4 5 Position OPEN Target Plates 8 so they are in the full upward position for left hand counter clockwise opening valves Secure OPEN Target Plates 8 by tightening Screws 37a See Fig 6 4 6 Determine the number of turns required to fully open the valve See Table 1 for NIBCO valves You should always confirm actual turns req...

Page 7: ... 1 250 31 8 NUMBER OF TURNS TO OPEN VALVE DISTANCE BETWEEN TARGETS X INCH MM 24 1 350 34 3 25 1 450 36 8 26 1 550 39 4 27 1 650 41 9 28 1 750 44 5 29 1 850 47 0 30 1 950 49 5 31 2 050 52 1 32 2 150 54 6 33 2 250 57 2 34 2 350 59 7 35 2 450 62 2 36 2 550 64 8 37 2 650 67 3 NUMBER OF TURNS TO OPEN VALVE DISTANCE BETWEEN TARGETS X INCH MM 38 2 750 69 9 39 2 850 72 4 40 2 950 74 9 41 3 050 77 5 42 3 1...

Page 8: ...l shut position and both view windows should be visually inspected to assure the SHUT target plates are centered The PIV should then be cycled to the full open position and both view windows should be visually inspected to assure the OPEN target plates are centered 7 4 Valve position can be secured by simply placing the Operating Wrench 29 over the Operating Stem 5 and over U bolt 23 A customer su...

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