Rubber Lined Flange Torque Specs

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Flange Bolt Torque Sequence and Torque Table

Flange Bolt Torque Sequence Torque bolts and nuts in a "CRISS-CROSS" sequence using a minimum of three torquing passes and the maximum bolt stress as defined PASS 1 Torque to a maximum of 30% of the final torque value in accordance with the torque sequence Check that gasket is getting compressed uniformly

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PROPER FLANGE BOLTING

the flanges can be misaligned making it impossible to have uniform seating of the gasket Numbering the bolts may be helpful in following the bolt sequence 7 Repeat step 6 elevating the torque to 50 to 60 percent of the final torque 8 Continue tightening in the recommended sequence until the final torque value is reached

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Flange Bolt Torque Sequence and Torque Table

Flange Bolt Torque Sequence Torque bolts and nuts in a "CRISS-CROSS" sequence using a minimum of three torquing passes and the maximum bolt stress as defined PASS 1 Torque to a maximum of 30% of the final torque value in accordance with the torque sequence Check that gasket is getting compressed uniformly

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Factors Affecting Gasket Performance

NOTE 2 The above mentioned torque values are based on a maximum bolt stress of 60 000 psi Bolt yield should be at least 80 000 psi NOTE 3 This table does not take flange strength into consideration We recommend consulting the flange manufacturer to confirm the suitability of the above-mentioned values NOTE 4 Apply torque in increments

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Recommended torque values for rubber lined Piping

Does anyone have a recommended torque values for rubber lined Piping? The lining is neoprene on regular CS pipng The actual rubber lining extend over the flat face gasket area so no gaskets are required RE Recommended torque values for rubber lined Piping? pennpiper (Mechanical) 30

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THOMAS Couplings Flange Adaptors Non Restrained

THOMAS Couplings Flange Adaptors Non Restrained Products G-Flex Install Couplings Fully Rubber Lined Flexible Couplings internal surface of the coupling is rubber lined enabling these products to be used for harsh pipeline contents Lower torque ratings

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Low Torque Gaskets

Low Torque Flange Gasket – The Full Port Flange Gasket Low Flange Bolt Torques Required for Positive Seal- Due to the Molded Raised Face-Patented double convex o-ring design Ideal for Thermoplastic Piping Systems also Metal or Plastic Lined metal Pipe Systems for up to 250 psi Excellent Chemical Resistance-PTFE-bonded gaskets are Suitable for Extremely Aggressive Chemical Services

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PTFE Lined Pipe Systems

MiNiMuM iD RADiuS NPS (inches) Radius (inches) Venting PTFE fittings other than blind flanges reducing flanges reinforced spacers and instrument connections are vented with one vent hole near the center of the fitting PTFE lined pipe spools 3 feet or less have one vent hole near the center of the spool

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Bolt tightening torque for EPDM gaskets

Jan 08 2006We have to use raised face steel flanges mating flat face flanged cast iron valves I know that it is not recommended to use iron flat face flanges with raised face steel flanges but we dont have time to buy new flanges We are using -Rubber gaskets EPDM 1/8 thickness brand S H but I cannot find information from the vendor of the gasket

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Garlock GYLON Style 3545 Microcellular PTFE Gaskets

The GYLON 3545 designed to compress and conform to irregular or damaged surfaces making it suitable for flanges that generate lower compressive stresses such and glass-lined flanges and equipment Features and Benefits The GYLON Style 3545 has highly compressible PTFE outer layers that seal under a low bolt load but provide a tight seal

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FLANGE INSULATION KIT INSTALLATION AND TORQUE

Consultation of a technician should be sought if in any doubt -2- (h) Repeat the steps in (g) increasing the torque to approximately 50 to 60% of the final torque value (i) Continue torquing all studs in the sequence of Figure 1 until no further rotation of the nuts take place using the specified torque setting

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PTFE

Very high compressibility due to its inorganic micro spheres thus sealing more effectively under lower bolt loads Therefore extremely suitable for glass ceramics and plastic lined or distorted flanges and even flanges with light surface irregularities The lowest gas permeability of all the PTFE range GYLON 3510 GYLON 3510 datasheet (64kB)

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Bolt Torque For Polyethylene Flanged Joints TN

Bolt Torque For Polyethylene Flanged Joints TN-38/January 2010 flange leakage are insufficient torque un-even torque and flange misalignment Written and correct bolt torque specifications and installation procedures will eliminate these problems The flange assembly design and written assembly specifications are controlled by the

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Styles 741 and 743 Vic

When mating to a serrated flange a flange gasket should be used adjacent to the serrated flange and then the Flange Washer is inserted between the Vic-Flange adapter and the flange gasket B When mating to a wafer valve where typical valves are rubber lined and partially rubber faced (smooth or not) flange † / / / / / / / / / / / /

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Proco Series 300 Flanged Rubber Pipe Connector

The full-face rubber flange of the PROCO Series 300 Rubber Pipe Connector is self gasketing Additionally the Style 310-R features a molded in place "O-Ring" on each flange-face for faster sealing with less torque at installation and less long-term maintenance

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Bray Resilient Seated Butterfly Valve

Disc edge and hub on metal discs shall be spherically machined and hand polished for minimum torque and maximum sealing capability Seat Shall be tongue-and-groove seat with a primary hub seal and a molded flange O-ring suitable for weld-neck and slip-on flanges

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Durco BTV

Flowserve is the world's largest manufacturer of lined valves with T4E1/ T4E3 plug valves and Atomac ball valves plus the BTV-2000 Tests Every valve is spark tested and hydrostatically tested prior to shipment The valve seat is tested at 150 psi (1034 kPa) while the stem seals are subjected to a

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Suggested Methods and Guidelines for Torquing and Bolting

Practical Method Used to Prevent Over Torquing Gasket and/or Face Lining Rubber A Mechanical steel ring stop or non-compressible gasket properly chosen to limit compression to 25% on the rubber lined flange joint • When soft rubber lined flange face is used as gasket the rubber lining should be brought up to 1/32 of bolt hole B

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Rubber Lined Tank Experts

Abtrex also specialized in rubber lining for abrasion resistant tanks and abrasion resistant pipe Crews of highly trained engineers are available 24/7 From rubber lining repairs to steel repairs and inspections Abtrex can take care of your tank lining and pipe lining needs either at our shop or at yours

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Torque Chart

Torque values assume that Nickel Anti-Sieze thread lubricant is used If bolts are to be torqued dry increase wrench setting by 20% Table is for standard pipe flanges only Consult LGT Engineering for flange bolt-up procedure target bolt stresses and guidelines for non-standard connections

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Bolt tightening torque for EPDM gaskets

Jan 08 2006We have to use raised face steel flanges mating flat face flanged cast iron valves I know that it is not recommended to use iron flat face flanges with raised face steel flanges but we dont have time to buy new flanges We are using -Rubber gaskets EPDM 1/8 thickness brand S H but I cannot find information from the vendor of the gasket

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GENERAL RUBBER LINING PRINCIPLES

The temperature of the equipment to be lined must be higher than 60F (15C) Any colder and the rubber applicators will have difficulty applying the rubber and the adhesives may not dry in a timely manner The rubber linings are easier to apply when they are warmed to approximately 120F (49C) on a warming table just prior to use II

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AWWA BUTTERFLY VALVES TECHNICAL SPECIFICATIONS

Mechanical-Joint bell dimensions conform to ANSI/AWWA C111/A21 11 Rubber Gasket Joints for Ductile Iron and Gray Iron Pressure Pipe and Fittings Bonding of 3 (80mm) through 20 (600mm) seat conforms to ASTM D429 Standard Test Methods for Rubber Property — Adhesion to Rigid Substrates

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Factors Affecting Gasket Performance

NOTE 2 The above mentioned torque values are based on a maximum bolt stress of 60 000 psi Bolt yield should be at least 80 000 psi NOTE 3 This table does not take flange strength into consideration We recommend consulting the flange manufacturer to confirm the suitability of the above-mentioned values NOTE 4 Apply torque in increments

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Gasket Reference Guide

1 Ensure flange faces are clean and free from imperfections These could be detrimental to the sealing performance 2 Carefully remove any solid residue from the flanges using scrapers wire brush or cloth Gasket Installation Surface Finish Recommendations Gasket Description Gasket Cross Section Flange Surface Finish Microinch Ra Flange Surface

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Torque Values

THE EFFECT OF BOLT LUBRICATION To achieve the same gasket compression a much higher torque value is required for a dry bolt versus using a lubricant In a dry bolt up or where an inefficient lubricant is used such as light oil the effort used in tightening is overcome by the frictional forces between the bolts and nuts

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Design Manual for Lined Piping Systems

As PSI uses both the homopolymer (6 - 8 fittings) and copolymer resins (1 - 8 pipe 1 - 4 fittings) the PVDF lined system is rated from 0F (-29C) to 275F (135C) Because PVDF is only partially fluorinated its chemical resistance is affected by temperature and concentration of liquids and gases

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Rubber Seated Butterfly Valves

Compatibility The ABZ Figures 090 929 909 and 919 valves can be used with all ANSI 125/150 pund flat or raised face type flanges The seat face design eliminates the need for additional gaskets Heavy wall pipe lined pipe and flanges must meet minimum inside diameter requirements of dimension E to permit clearance of disc

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Bolt Torques

Lined Pipe and Fittings It is therefore strongly recommended that all bolts are retorqued a minimum of 24 hours after commissioning or following the initial full process cycle The torque of all bolted joints should then be rechecked at least annually thereafter The following table gives recommended torque levels for flange to flange connections

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ANSI FLANGES B 16

Class 150 and 300 are regularly furnished with 2 mm raised face which is included in the minimum flange thickness Class 400-600-900-1500-2500 flanges are regularly furnished with 7 mm raised faces which is additional to the minimum flange thickness Height of large or small male and tongues is 7 mm

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AWWA C 504 BUTTERFLY VALVES

AWWA C 504 design based travelling nut gear operator can be mounted on all valves sizes both for above and underground service For Gear Box to be used above ground a hand wheel and visual posi on indicator can be provided Chainwheel with 2" Square Nut is also available as an op on

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Torque Value Display

For lined or non‐metallic raised face flanges consult the flange manufacturer to confirm the suitability of the values shown Maximum torque per bolt is based upon a gasket stress of either 15 000 psi or the available gasket stress at 75% of bolt yield whichever is lower

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rubber flange lining

Worm Gear Actuated Flange Concentric All Rubber Lined Butterfly Valve Worm Gear Actuated Flange Concentric All Rubber Lined Butterfly Valve 1 Features Rubber lined butterfly valve is a kind of valve with thick polymer lining on the body and disc The lining makes

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