Model 20A Family
Model 20R
Model 16A
Model 16AK
Model 47130VB
Model 16
  Model 12
Replacement Parts
  Repair Guide
  FAQ Database
  Contact CESCO



Chesprocott Health District - News: Why does CESCO suggest that toilet repairs should be done by licensed plumber?
Select a News Section:    

Section: Frequently Asked Questions
Why does CESCO suggest that toilet repairs should be done by licensed plumber?
Last Update: Sep 03, 2002

"NOTE: All the repair parts required for repair/replacement have always been available to the handyman. The installation skill and time needed have really not changed with the promotion of low cost, consumer-packaged kits. Toilet designs and flushing actions vary greatly. To perform well, toilets must perform multiple tasks: (1) give adequate flow to scour the bowl; (2) remove all solid & liquid waste from the bowl and then refill the bowl with fresh water to the proper level; (3) move all waste through the trap and down the drain to avoid clogging; (4) retain a trap seal to protect against sewer gases; (5) refill the toilet tank to the same level; (6) operate well with supply pressures that vary widely and fluctuate; (7) maintain leak-free seals between flushes; (8) tolerate various minerals & debris in the water supply; (9) prevent the risk of contaminating the drinking water supply; and (10) handle all commonly used cleaning and sanitizing agents without degradation. Gravity flow toilets are relatively simple fixtures, but all parts must work together to function at or above the original design standard. While it is evident that many toilet fill valves and other replacement parts are effectively installed without a plumbing professional, we have yet to see any installation instructions (including CESCO’s) that optimize performance, guarantee results, and avoid the risk of damage to the fixture.

FAQ Introduction
Common Toilet Troubleshooting Steps and some Frequently Asked Questions.
How long should it take to fill the tank and how can that be regulated?
The time to fill the tank varies with the design and size of the tank.
Why do toilet suppliers caution against over-tightening the nuts on toilet tank fixtures and trim?
Toilets are made of vitreous china, an exceptionally strong and durable material but one that can crack if subjected to a sharp impact or excessive stress.
What is the best way to adjust the water level in the tank?
The techniques vary by design among toilet fill valves.
Why must the refill tube always be kept above the water level?
How important is it to flush the line before or when installing a replacement toilet fill valve?
What are the leading causes of premature failure of all toilet tank fittings and what are the implications?
Considering Cutting the Overflow Tube Below the C-L Marking on the Fill Valve?
Some fill valve suppliers and "how to" guides recommend cutting the overflow tube at 1" below the C-L mark on the valve. When should this be done?
Conformance with anti-siphon installation requirements of the ASSE 1002 Standard
Why does the critical level (C-L) mark of a toilet fill valve have to be a minimum of 1" above the top of the overflow tube (flood plain) to be in conformance with anti-siphon installation requirements of the ASSE 1002 Standard?
What is water hammer, why is it a problem, and what can be done to eliminate it?
Water hammer is the instantaneous increase in water pressure that occurs when water flowing in a pipe stops abruptly (as with a snap action valve closing).
Why does CESCO suggest that toilet repairs should be done by licensed plumber?
Should plumber’s putty, thread sealant, grease or lubricants ever be used in the installation or repairs of toilet fill
What is the least understood and most ignored routine maintenance tasks?
Why is it important to recognize and conform to anti-siphon codes?
What is thermal expansion in residential water supply pipes, why is it a problem, and what is the solution?
Why do many leading suppliers of [plastic] fill valves disclaim responsibility/reliability from product failures?
How much water should be in the bowl after the flushing cycle is completed and the fill valve shuts off?


Barry E. Walter Sr. Co. 2550 East Platte Avenue - Fort Morgan, CO 80701 - 800-767-5552

  Copyright © 2000 - 2023 CESCO BRASS - All rights reserved