Troubleshooting/Repairing the Current Sloan Flushometer Valve
(for older models, see below)
We have received written permission from Sloan (March 29, 1996 Sloan code #08161686) to show their copyrighted troubleshooting guide
Please Note: The Sloan Royal and Regal are designed to operate with 10 to 100psi of water pressure. The minimum pressure required to the valve is determined by the type of fixture selected. Consult fixture manufacturer for minimum pressure requirements. Please note that like most flushometer valves, Sloan will not flush properly in low water pressure conditions.
PROBLEM: Valve does not function.
CAUSE:
(a) Control stop or main valve is closed.
(b) Handle Assembly is worn.
SOLUTION:
(a) Open Control Stop or Main Valve.
(b) Install Sloan Handle Repair Kit (B-50-A) or replace handle.
PROBLEM: Insufficient volume of water to adequately siphon fixture.
CAUSE:
(a) Control stop not open enough.
(b) Urinal Valve parts inside a Closet Valve.
(c) Low Consumption Valve installed in old, non-Low Consumption fixture.
(d) Water Saver Kit installed in old, non-Water Saver bowl.
(e) Inadequate volume or pressure at supply.
SOLUTION:
(a) Adjust control stop for desired delivery of water.
(b) Replace inside Urinal Parts with proper Closet Valve Parts.
(c) Replace A-41-A Inside Parts Kit with A-38-A Water Saver Kit.
(d) Position Refill Head, A-170, so that Side 1 is in up-position.
(e) If no gauges are available to properly measure supply pressure or
volume of water at the Valve, then completely remove the entire Diaphragm Assembly and open the control stop to allow water to pass through the empty valve. If the supply is adequate to siphon the fixture in this manner, the Restriction Ring (A-164 on plastic guides) should be removed from the bottom of the guide to provide additional flow. If additional flow is still required, the Refill Head (A-170) may be replaced with a Brass Low Flow Refill Head (A-85). Should neither of these steps prove satisfactory, steps should be taken to increase the pressure and/or supply.
PROBLEM: Valve closes off immediately.
CAUSE:
(a) Ruptured or damaged diaphragm.
(b) Enlarged by-pass orifice from corrosion or damage.
SOLUTION:
Install inside parts kit to correct above problem and update Flushometer.
PROBLEM: Length of flush too short (short flushing).
CAUSE:
(a) Diaphragm assembly and Guide assembly are not hand-tight.
(b) Enlarged by-pass orifice from corrosion or damage.
(c) A-19-AU (Black) Urinal Relief Valve in Closet Flushometer.
(d) A-41-A Low Consumption Kit installed in non-Low Consumption fixture.
SOLUTION:
(a) Screw the two assemblies hand-tight.
(b) Install NEW Inside Parts Kit to correct above problem and update Flushometer.
(c) Replace Relief Valve with A-19-AC (White) Closet Relief Valve.
(d) Replace with proper Inside Parts Kit.
PROBLEM: Length of flush too long (long flushing) or failing to close off.
CAUSE:
(a) Relief Valve (A-19-A) is not seating properly or by-pass orifice is clogged because of foreign material, or by-pass orifice is closed by an
invisible gelatinous film from "over treated" water.
(b) Line pressure has dropped and is not sufficient to force Relief Valve
to seat.
(c) A-19-AC (White) Closet Relief Valve has been used in a 1 or 1 1/2 GPF
Urinal.
SOLUTION:
(a) Disassemble the working parts and wash them thoroughly.
Note: The size of the orifice in the by-pass is of the utmost importance for the proper metering of water into the upper chamber of the valve. DO NOT enlarge or damage this orifice. Replace Inside Kit if cleaning does not correct problem.
(b) Shut off all control stops until pressure has been restored, then open them again.
(c) Replace with A-19-AU (Black) Relief Valve.
PROBLEM: Chattering noise in Flushometer.
CAUSE:
(a) The A-156-A Segment Diaphragm has been installed upside down.
(b) The inside cover has become distorted from freezing or abuse.
SOLUTION:
(a) Replace the Segment Diaphragm to the proper position as instructed by
markings on the Diaphragm.
(b) Replace Inside Cover.
PROBLEM: Leaking at Handle Assembly.
CAUSE:
(a) The B-39 Seal may have deteriorated.
(b) Handle Gasket has been omitted.
(c) Valve Handle Bushing is worn.
SOLUTION:
(a) Install new B-39 Seal.
NOTE: The B-39 Seal will easily slide right onto the B-40 Bushing if it is wet.
(b) Install A-31 Handle Gasket or Sloan Handle Repair Kit (B-50-A).
(c) Install Sloan Handle Repair Kit (B-50-A).
