Feb 825yd series User manual

Typical Installation

Figure 1

Figure 2

Installation Instructions

1. Consult local codes for specific installation requirements and restrictions

applicable to your area. It is recommended that system supply pressure

be at least 20psi (133kPa).

2. These instructions apply to series 825YD, and 826YD size 21⁄2" to 10" (65-

250mm) only. The valves may be installed only in the horizontal orienta-

tion as shown.

3. The valve assembly must be installed where it is accessible for periodic

testing and maintenance. Clearances shown in the installation views

apply to exterior, interior and pit/vault installations and are only recom-

mendations. These minimums do not apply to removable protective

enclosures. Refer to local codes for actual requirements in your area.

4. PRIOR TO INSTALLING THE VALVE INTO THE LINE, FLUSH THE SUP-

PLY LINE OF ALL FOREIGN MATERIAL. Failure to flush the supply line

may cause the check valves to become fouled and require disassembly

and cleaning.

5. DO NOT LIFT THE ASSEMBLY BY CONNECTING TO THE GATE VALVE

HANDWHEELS OR STEMS.

6. After installation SLOWLY fill the assembly with water and bleed air from

the body using the #2, # 3 and # 4 test cocks. Test the valve assembly to

ensure correct operation.

NOTE: All assemblies are tested at the factory for proper operation and

leakage. If the valve does not pass the field test, it is most likely due to a

fouled check valve. This is not covered by the factory warranty. The valve

cover(s) must be removed and the check seats inspected and cleaned.

Any damage or improper operation caused by pipeline debris or improp-

er installation/start-up is not included in the factory warranty.

In case of a possible warranty claim, contact your local supplier or

FEBCO Representative. DO NOT REMOVE THE VALVE ASSEMBLY

FROM THE PIPELINE.

7. The assembly must be protected from freezing and excessive pressure

increases. Pressure increases can be caused by thermal expansion or

water hammer. These excessive pressure situations must be eliminated

to protect the valve and system from possible damage.

IS-F-825YD-826YD

INSTALLATION INSTRUCTIONS

Series 825YD, 826YD

Reduced Pressure Zone Assemblies

Reduced Pressure Detector Assemblies

Sizes: 21⁄2" – 10" (65 – 250mm)

FRT

RWWP

175 4

826YD

12" (300mm) Minimum

Refer to Local Codes

12" (300mm)

Minimum

HORIZONTAL INSTALLATION OF THE RP SERIES 825YD

(Side View)

(Shown With Strainer)

FLOW

HORIZONTAL INSTALLATION OF THE RP SERIES 825YD

(Top View)

(Shown With Strainer)

18" (450mm) Min

6" (150mm) Minimum

Refer to Local Codes

MAINTENANCE MANUAL

Limited Warranty: FEBCO warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of original shipment. In the event of

such defects within the warranty period, the Company will, at its option, replace or recondition the product without charge. This shall constitute the sole and exclusive remedy for breach of warranty, and

the Company shall not be responsible for any incidental, special or consequential damages, including without limitation, lost profits or the cost of repairing or replacing other property which is damaged

if this product does not work properly, other costs resulting from labor charges, delays, vandalism, negligence, fouling caused by foreign material, damage from adverse water conditions, chemical, or

any other circumstances over which the Company has no control. This warranty shall be invalidated by any abuse, misuse, misapplication or improper installation of the product. THIS WARRANTY IS IN

LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Any implied warranties that

are imposed by law are limited in duration to one year.

Some States do not allow limitations on how long an implied warranty lasts, and some States do not allow the exclusion or limitation of incidental or consequential damages. Therefore the above limitations

may not apply to you. This Limited Warranty gives you specific legal rights, and you may have other rights that vary from State to State. You should consult applicable state laws to determine your rights.

Service and Maintenance

Service Procedure

Close the outlet shutoff valve, then close the inlet shutoff valve. Bleed

residual pressure from the assembly by opening the #4, #3, and # 2 test

cocks in this sequence.

General

1. Detailed maintenance manuals are available from your local FEBCO rep-

resentitive.

2. Rinse all parts with clean water prior to reassembly.

3. DO NOT USE ANY PIPE DOPE, OIL, GREASE OR SOLVENT ON ANY

PARTS unless instructed to do so.

4. Do not force parts. Parts should fit together freely. Excess force may

cause damage and render the assembly inoperable.

5. Carefully inspect seals and seating surfaces for debris or damage.

6. After servicing, repressurize the assembly and test to ensure proper

operation.

Check Valve Disassembly

1. CAUTION: The cover retains the spring on 21⁄2" - 3" (65 - 80mm) valve

sizes. Remove the cover capscrews uniformly while holding the cover in

place. Carefully reduce hand force on the cover to relieve spring com-

pression.

The check module on the 4" - 10" (100 - 250mm) valve sizes retains the

spring. Unscrew the capscrews uniformly to avoid binding the cover in

the body bore. The spring will push the cover approximately 1⁄2" off the

top of the body.

2. Lift the spring and check assembly 21⁄2" - 3" (65 - 80mm) or check mod-

ule 4" - 10" (100 - 250mm) from the body.

3. Inspect and clean debris from the disc and seat ring. Replace any dam-

aged parts.

4. Use the reverse procedure to assemble. If necessary, apply a thin film

of FDA/NSF approved grease to cover the O-ring. Install the capscrews

and tighten in a uniform cross pattern.

Relief Valve Disassembly

1. Remove the capscrews holding the cover to the relief valve body, and

remove the cover.

2. Remove the diaphragm and pull the internal assembly from the body. It

may be helpful to push the internal assembly with your fingers through

the discharge opening.

3. Inspect for debris, damage or fouling of the seat disc. Clean or replace

the rubber disc as required.

4. Reposition the internal assembly and diaphragm into the body. Install

the cover and cap screws.

Field Test Procedure

FEBCO recommends the use of the appropriate test method presented in

the ASSE Series 5000 manual that is consistent with your local codes.

Troubleshooting

PROBLEM CAUSE SOLUTION

1. Continuous relief a. Debris on check Disassemble and clean

valve discharge seating surfaces

b. Debris on relief valve Disassemble and clean

seating surfaces

2. Intermittent relief a. Inlet pressure fluctuations Eliminate fluctuations

valve discharge

b. Downstream pressure Eliminate surges

surges

3. Low flows passing a. Mainline check fouled Disassemble and clean

through mainline b. Bypass line plugged Disassemble and clean

valve (RPDA)

Note: The gap drain is not designed to catch the maximum discharge pos-

sible from the relief valve. The installation of FEBCO air gap with the drain

line terminating above a floor drain will handle any normal discharge or nui-

sance spitting through the relief valve. However, floor drain size may need

to be designed to prevent water damage caused by a catastrophic failure

condition. Do not reduce the size of the drain line from the air gap fitting.

A Division of Watts Water Technologies, Inc. USA: 4381 N. Brawley • Ste. 102 • Fresno, CA • 93722 • Tel. (559) 441-5300 • Fax: (559) 441-5301 • www.FEBCOonline.com