FNW FNW7XX Installation Instructions Manual Download Page 20

RESILIENT-SEATED CARTRIDGE STYLE

FNW7XX

BUTTERFLY VALVE

INSTALLATION INSTRUCTIONS

FNW.COM

We reserve the right to modify or improve the designs or 

specifications of our products at any time without notice.

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18. WARRANTY

LIMITED WARRANTY:

Subject to the limitations expressed herein, Seller warrants that products manufactured by Seller shall be free from defects in design, 
material and workmanship under normal use for a period of one (1) year from installation but in no case shall the warranty period extend 
longer than eighteen months from the date of sale. This warranty is void for any damage caused by misuse, abuse, neglect, acts of God, 
or improper installation. For the purpose of this section, “Normal Use” means in strict accordance with the installation, operation and 
maintenance manual. The warranty for all other products is provided by the original equipment manufacturer. 

REMEDIES:

Seller shall repair or replace, at its option, any non-conforming or otherwise defective product, upon receipt of notice from Buyer 
during the Manufacturer’s warranty period at no additional charge. SELLER HEREBY DISCLAIMS ALL OTHER EXPRESSED OR IMPLIED 
WARRANTIES, INCLUDING, WITHOUT LIMITATION, ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS OR FITNESS FOR 
A PARTICULAR PURPOSE. 

LIMITATION OF LIABILITY:

UNDER NO CIRCUMSTANCES SHALL EITHER PARTY BE LIABLE TO THE OTHER FOR INCIDENTAL, PUNITIVE, SPECIAL OR 
CONSEQUENTIAL DAMAGES OF ANY KIND. BUYER HEREBY ACKNOWLEDGES AND AGREES THAT UNDER NO CIRCUMSTANCES, 
AND IN NO EVENT, SHALL SELLER'S LIABILITY, IF ANY, EXCEED THE NET SALES PRICE OF THE DEFECTIVE PRODUCT(S) 
PURCHASED DURING THE PREVIOUS CONTRACT YEAR. 

LABOR ALLOWANCE:

Seller makes NO ADDITIONAL ALLOWANCE FOR THE LABOR OR EXPENSE OF REPAIRING OR REPLACING DEFECTIVE PRODUCTS 
OR WORKMANSHIP OR DAMAGE RESULTING FROM THE SAME. 

RECOMMENDATIONS BY SELLER:

Seller may assist Buyer in selection decisions by providing information regarding products that it manufacturers and those manufactured 
by others. However, Buyer acknowledges that Buyer ultimately chooses the product’s suitability for its particular use, as normally 
signified by the signature of Buyer’s technical representative. Any recommendations made by Seller concerning the use, design, 
application or operation of the products shall not be construed as representations or warranties, expressed or implied. Failure by Seller 
to make recommendations or give advice to Buyer shall not impose any liability upon Seller. 

EXCUSED PERFORMANCE:

Seller will make a good faith effort to complete delivery of the products as indicated by Seller in writing, but Seller assumes no responsibility 
or liability and will accept no back-charge for loss or damage due to delay or inability to deliver, caused by acts of God, war, labor difficulties, 
accidents, inability to obtain materials, delays of carriers, contractors or suppliers or any other causes of any kind whatever beyond the 
control of Seller. Under no circumstances shall Seller be liable for any special, consequential, incidental, or indirect damages, losses, or 
expense (whether or not based on negligence) arising directly or indirectly from delays or failure to give notice of delay. 

©2022 Ferguson Enterprises, LLC  1022 4329371

Summary of Contents for FNW7XX

Page 1: ...ptions and accessories information consult the specific device s manual SCOPE The purpose of this manual is to ensure that the valves supplied are properly installed handled operated and maintained to...

Page 2: ...regular basis 3 TRANSPORTATION Valve weight over 20kgs should be transported using equipment or a machine not manpower alone Please refer to product catalogue for details of valve unit weight Protect...

Page 3: ...in the vertical position and the actuator mounted vertically directly above the valve However valves in elevated positions with gear operator and chain wheels should be installed with the valve stem p...

Page 4: ...e secondary side pipe properly and make sure the pipes are parallel and there is no distortion If the alignment is not proper external leakage seat leakage or faulty operation may occur Properly Align...

Page 5: ...y time without notice 5 Installing a valve at a pump outlet Installing at an elbow or a reducer Combination of a control valve and stop valve Correct Installation O Incorrect Installation X Correct In...

Page 6: ...of this flange face can create sealing problems between any resilient seated butterfly valve and the flange face For this reason Type C flanges are not recommended for use with resilient seated butte...

Page 7: ...removal work set the valve disc partially open position within disc edge between body face surface After aligning both flanges insert the piping bolts and secure the product to prevent it from droppi...

Page 8: ...nges correctly parted O DO NOT INSTALL OPEN X FLANGES TOO CLOSE FOR INSTALLATION X Correctly installed O Test open to ensure no interference O For accurate alignment between the flanges and valve tigh...

Page 9: ...e due to stress relaxation of the piping gaskets Be sure to perform re tightening repeatedly until the bolts and nuts are tightened evenly RECOMMENDED BOLT TIGHTENING TORQUE CLASS 150 FOR METAL FLANGE...

Page 10: ...of the valve to assure proper function Valve parts are subject to normal wear and should be inspected and replaced as necessary Inspection and maintenance frequency depends on the severity of the serv...

Page 11: ...ning the bolts and nuts Remove the source of vibrations Disassembly and maintenance Check for damage of the parts Looseness of the bolts and nuts Bolts and nuts Visual check Check by touch Re tighten...

Page 12: ...re should be taken for protection against toxic and or flammable fluids Never remove the operator from the valve while the valve is in the pipeline under pressure Following safety precautions are reco...

Page 13: ...llation bolts are loose Re tighten the bottom cover installation bolts The valve is misaligned Loosen the bolts and realign the valve correctly Torn or damaged seat Remove the valve body and check the...

Page 14: ...or powdered foreign material is inside the piping any foreign material which entered the bearings may interfere with the shaft rotation If there is a possibility of this remove the valve and clean it...

Page 15: ...126 Cast Iron 1 Wafer Type Size 2 10 ASTM A536 65 45 12 Ductile Iron Wafer Type Size 12 and UP All Lug Type 6 Upper Stem SUS 316 STAINLESS STEEL 1 SUS 416 STAINLESS STEEL 7 Seat EPDM BUNA or VITON 1 8...

Page 16: ...SEATED CARTRIDGE STYLE FNW7XX BUTTERFLY VALVE INSTALLATION INSTRUCTIONS FNW COM We reserve the right to modify or improve the designs or specifications of our products at any time without notice 16 PA...

Page 17: ...ASTM A283D A36 4 4 Bottom Plate O Ring Rubber ASTM AD2000 NBR 1 5 Gasket Steel 1 6 Bearing Bronze ASTM B584 C83600 1 7 Lower Bushing Bronze ASTM B584 C83600 1 8 Body Ductile Iron ASTM A536 65 45 12 1...

Page 18: ...ody and disc assembly down onto the stem Then tap the lower stem further in beneath the internal threads in the body 6 Insert bushings s into the upper stem hole Note that 14 and larger valves have a...

Page 19: ...that the disc is fully closed when the gear operator is in the closed position Adjust as needed 17 BUTTERFLY VALVE DISASSEMBLY The valve can be disassembled in the reverse order of the assembly instru...

Page 20: ...EVENT SHALL SELLER S LIABILITY IF ANY EXCEED THE NET SALES PRICE OF THE DEFECTIVE PRODUCT S PURCHASED DURING THE PREVIOUS CONTRACT YEAR LABOR ALLOWANCE Seller makes NO ADDITIONAL ALLOWANCE FOR THE LA...

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