FNW FNW7XX Installation Instructions Manual Download Page 8 | Manualshive

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FNW FNW7XX Installation Instructions Manual Download Page 8

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.

8

Flanges 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, tighten the flanges at both sides.

•

After installation, open and close the valve to verify that operations from/to full-open to/from full-close are smooth and disc is not
binding or making contact with inside of pipe.

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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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