Civacon NV4000 Instruction Manual

Installation & Maintenance Manual
NV4000, NV4000E, NV4000C
Product Description
The primary function of the Pressure/Vacuum (PV) vent is to control the pressure
and vacuum condition of the tank during operation. The vent is designed to
relive (pop-off) pressure or vacuum due to temperature changes at specific
setting. The device is designed with a roll-over shut off feature to seat the tank
in an overturn condition. In addition, the vent is standard with a filter/flame
arrestor.
WARRANTY
All parts and products are thoroughly inspected and tested from the time raw
material is received at our plant, until the product is completed. We guarantee
that all products are free from defects in materials and workmanship for a
period of one year from the date of shipment. Any product that may prove
defective within said one year period will, at our discretion, be promptly
repaired, replaced or credit given for future orders. This warranty shall not apply
to any products which has been altered in any way, which has been repaired by
any party other than an authorized service representative, or when such a failure
is due to misuse or condi-tion of use. We shall have no liability for labor costs,
freight costs or any other costs or charges in excess of the amount of invoice
for the products.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR
IMPLIED AND SPECIFICALLY THE WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE.
WARNING!!
CIVACON products should be used in compliance with the applicable federal,
state and local laws and regulations. Product selection should be based on
physical specifications and limitations, compatibility with the environment,
and the material being handled.
CIVACON MAKES NO WARRANTIES OF
FITNESS FOR A PARTICULAR PURPOSE.
TECHNICAL ASSISTANCE
If at any time during the installation a question arises that is not covered in this
manual or with any other applicable documents feel free to call the Customer
Service Department or visit our website at www.civacon.com.
In the U.S., call 1-888-526-5657
In all other countries, call your local agent.
NOTE: All information subject to engineering and/or other changes. All trade names are copyrighted. Patents Pending. ©2018 Civacon. ©2018 Delaware Capital Formation, Inc.
All Rights Reserved. DOVER and the DOVER logo are registered trademarks of Delaware Capital Formation, Inc., a wholly-owned subsidiary of Dover Corporation.
www.civacon.com 9393 Princeton-Glendale Road Hamilton, Ohio, USA 45011
Phone: [phone] Fax: [phone]
13212
RevB May 2020

Manual
The manual contains the inspection, maintenance schedule, and instructions
for repairing and replacing parts for all NV4000 Pressure/Vacuum Vents. The
following schedule, based on the environmental conditions in the northern
United States, is only a recommendation: Inspection and maintenance intervals
must be adjusted according to use and operating conditions. If any parts are
damaged, refer to the Product Maintenance section.
Installation Procedure
1. Remove existing vent
2. Apply anti-seize compound to the threads of the new vent
3. Install new vent and hand tighten
4. Using a 15/16” wrench, socket, or pliers tighten the vent 1/8 to 1/4” turn
(approximately 12-15 ft-lbs.) Test
Do not over tighten as the may cause damage to the vent
Product Maintenance
This Pressure Vacuum Vent contains a flame arrestor screen (Item 7) which
over time may collect dirt, leaves and other foreign objects. IT IS THE USER’S
RESPONSIBILITY TO INSPECT AND KEEP THIS AREA CLEAN SO THAT THE VENT
CAN OPERATE PROPERLY.
Disassembly: Remove the snap ring (9) then press and rotate the rollover
housing (5) counterclockwise. Gaskets should be inspected for cuts, swelling,
or deterioration. If any of these conditions are found, seals should be replaced.
Inspect seal surfaces for scratches or other damage that may lead to improper
sealing. If these conditions exist, replace the vent.
Cleaning: If the vent is operating in a dirty environment or more aggressive
liquids, more frequent maintenance will be required. We also recommend
periodic testing of the vent to ensure that it is working properly. If it is not
functioning properly clean filter/flame arrestor (7), vacuum poppet assembly (8),
pressure poppet (4), body sealing surfaces (1), and shutoff puck assembly (10),
with warm soapy water.
Re-assembly: Install components in reverse order of removal. For easy re-
assembly, ensure shutoff puck is centered in the vent when installing the
rollover housing. Once re-assembled, a light tap to the vent may be needed to
help align components to their natural state.
CAUTION: The filter/flame arrestor must be cleaned periodically for safe
operation.
ITEM PART NUMBER DESCRIPTION QT Y.
1 13154 Body 1
2 13155 Spring, Pressure 1
3 13156 Spring, Vacuum 1
4 13157 Poppet, Pressure 1
5 13159 Housing, Rollover Puck 1
6 13163 Gasket, Flat 1
7 13167 Flame Arrestor 1
8 13192 Assembly, Vacuum Poppet 1
9 13207 Ring, Wire External Snap 1
10 13208 Assembly, Shutoff Puck 1
13212 Instruction Sheet