Kupferle MAINGUARD 77 Operating And Maintenance Manual

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MAINGUARD #77

MAINGUARD #78

Kupferle Water Solutions

Disclaimer: While this document is complete, comprehensive, and accurate to the best of

Kupferle's knowledge, this document is subject to change and is for general information

purposes only.

Operating and Maintenance Manual

1291 N Highway Drive

Fenton, Missouri

63026, USA

Tel: 1-800-231-3990

Tel: 314-231-8738

Fax: 314-231-2820

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Summary of Contents for Kupferle MAINGUARD 77

Page 1 1291 N Highway Drive Fenton, Missouri 63026, USA Tel: 1-800-231-3990 Tel: 314-231-8738 Fax: 314-231-2820 Disclaimer: While this document is complete, comprehensive, and accurate to the best of Kupferle’s knowledge, this document is subject to change and is for general information purposes only.
Page 2: Table Of Contents
Table of Contents Table of Contents ---------------------------------------------------------------------------------------------------- 2 DESCRIPTION --------------------------------------------------------------------------------------------------------- 3 General Description ---------------------------------------------------------------------------------------------------------- 3 Mainguard #77 ------------------------------------------------------------------------------------------------------------------------------ 3 Mainguard #78 ------------------------------------------------------------------------------------------------------------------------------ 3 Layout ---------------------------------------------------------------------------------------------------------------------------- 4 Mainguard #77 ------------------------------------------------------------------------------------------------------------------------------ 4 Mainguard #78 ------------------------------------------------------------------------------------------------------------------------------ 5 INSTALLATION -------------------------------------------------------------------------------------------------------- 6 OPERATION ----------------------------------------------------------------------------------------------------------- 8 Operation ----------------------------------------------------------------------------------------------------------------------- 8 MAINTENANCE ------------------------------------------------------------------------------------------------------- 9 Removing and Replacing the Operating Assembly ------------------------------------------------------------------ 9...
Page 3: Description
DESCRIPTION General Description Mainguard #77 The Mainguard #77 is an above-ground, self-draining, non-freezing blow-off hydrant with a specified depth of bury. The inlet options are 2” FIP vertical, 2” FIP horizontal, or 2” MJ horizontal. A non-turning operating rod opens with 4-6 rotations to the left using the operating screw to be fully open. The outlet is 2-1/2”...
Page 4: Layout
Layout Mainguard #77 Nozzle Cap 2-1/2” NST Brass Nozzle Locking Cover Operating Screw Traffic Breakaway Coupling Top Cap 2” FBE Coated Top Cap Bolt Steel Pipe Crushed Rock Drain Hole Inlet Valve Body Thrust Blocking (Horizontal shown)
Page 5: Mainguard #78
Mainguard #78 Nozzle Cap Locking Cover Meter Box 2-1/2” NST Slotted Operating Brass Nozzle Screw Top Cap 2” FBE Coated Steel Pipe Drain Hole Crushed Rock Inlet Valve Body (Vertical shown)
Page 6: Installation
INSTALLATION NOTE: Kupferle recommends the installation of a corporation or curb stop prior to the blow-off for increased serviceability and maintenance. 1. The supply lines must be flushed free of any rock, gravel, or other debris before connecting the hydrant or installing any new or replacement parts.
Page 7 Mainguard #78...
Page 8: Operation
OPERATION Operation The blow-off is operated by turning the operating screw with a standard universal slotted wrench. 4-6 rotations of the operating screw counterclockwise will open the hydrant fully. Turn clockwise to close. 1. Remove the locking cover. 2. Remove the nozzle cap. Hook up a hose to the outlet if desired. 3.
Page 9: Maintenance
MAINTENANCE NOTE: The water supply must be turned off before maintenance can be performed, typically via the valve box leading to the hydrant. Removing and Replacing the Operating Assembly Mainguard #77 Mainguard #78 Slotted Operating Screw Slotted Operating Screw (on backside) Top Cap Bolts Top Cap Bolts Top Cap...
Page 10: Changing Plunger O-Ring
Changing Plunger O-ring 1. Remove the operating assembly to above ground. Plunger Refer to Removing the Operating Assembly above. 2. Remove and replace plunger O-rings. Plunger O-rings 3. Replace the operating assembly. Seat Rubber Washer for Plunger Changing Seat Rubber Seat Rubber Bolt 1.
Page 11: Troubleshooting
Maintenance section for instructions. ORDERING REPLACEMENT PARTS Replacement parts may be ordered from any water works distributor. A list of distributors may be obtained by calling Kupferle at 800-231-3990 or by visiting Kupferle’s website. Parts lists are also available on Kupferle’s website. http://www.hydrants.com...
Page 12: Cut Sheets
DWG NO STANDARD TAG SHEET DISCLAIMER PIPE LENGTH DEPENDENT ON DEPTH OF BURY, SHOWN AS 3' THIS DRAWING IS THE PROPERTY OF KUPFERLE WATER SOLUTIONS. IT IS NOT TO BE USED OR TAG WITH SOLD AS REPLACMENT PART 1 OF 1 DUPLICATED WITHOUT THE PERMISSION OF THE OWNER.
Page 13 DWG NO STANDARD TAG SHEET DISCLAIMER PIPE LENGTH DEPENDENT ON DEPTH OF BURY THIS DRAWING IS THE PROPERTY OF THE KUPFERLE #78 Cut_Rev0 FOUNDRY COMPANY. IT IS NOT TO BE USED OR SOLD AS REPLACMENT PART TAG WITH 1 OF 1 DUPLICATED WITHOUT THE PERMISSION OF THE OWNER.

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Mainguard 78