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Supplier: Robvon Backing Ring Company, Inc.
Description: Designed primarily for automatic welding and to allow quick and easy joint alignment where the inside diameters are slightly out-of-round. Nubs can be chipped off or left intact to be melted into first root pass.
- Welding Accessories: Weld Backing, Specialty / Other
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Supplier: Robvon Backing Ring Company, Inc.
Description: Designed for quick easy joint alignment where the variation in inside diameters is relatively great.
- Welding Accessories: Weld Backing, Specialty / Other
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Supplier: Robvon Backing Ring Company, Inc.
Description: Designed for quick and easy joint alignment, and for manually setting the root gap.
- Welding Accessories: Weld Backing, Specialty / Other
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Supplier: Robvon Backing Ring Company, Inc.
Description: Conspacer, which combines a Robvon Backing Ring and a consumable insert ring, is suited for use in high and low-pressure piping, in facilities where TIG welding is used to join pipe or tubing. Filler metal feature ensures alignment of pipe ends and automatically sets root
- Welding Accessories: Weld Backing, Specialty / Other
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Supplier: Accuris
Description: INTERNAL MACHINING AND SOLID MACHINED BACKING RINGS FOR CIRCUMFERENTIAL BUTT WELDS
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Supplier: American Cast Iron Pipe Company
Description: , totally boltless and glandless way of restraining field connections, which also does not require a factory or field weldment. Where field cuts are anticipated, the Field Flex-Ring may be used to restrain joints with any suitable ductile iron plain end or cut pipe in lieu of a
- Material: Iron (Ductile)
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Supplier: U.S. Plastic Corporation
Description: backing O-ring for low torque and wear compensation-no adjustment necessary. Available in PVC with solvent cement or threaded end connections. Monobloc structure provides high safety level: user cannot disassemble or mis-adjust.
- Connection: Socket Weld / Solder, Union
- Valve Size: 0.5000 inch
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Supplier: RS Components, Ltd.
Description: Compact ball valve type 353 PVC-U with solvent cement sockets. Suitable for applications with water and generally used in agriculture, irrigation, swimming pools, fish farming and water distribution. Monoblock body prevents ball blow-out. Ball shaft with failsafe feature. Backing O
- Connection: Socket Weld / Solder
- Material: Other
- Pressure Rating: 232 psi
- Valve Size: 2 inch
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Supplier: RS Components, Ltd.
Description: Compact ball valve type 353 PVC-U with solvent cement sockets. Suitable for applications with water and generally used in agriculture, irrigation, swimming pools, fish farming and water distribution. Monoblock body prevents ball blow-out. Ball shaft with failsafe feature. Backing O
- Connection: Socket Weld / Solder
- Material: Other
- Pressure Rating: 232 psi
- Valve Size: 1 inch
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Supplier: RS Components, Ltd.
Description: Compact ball valve type 353 PVC-U with solvent cement sockets. Suitable for applications with water and generally used in agriculture, irrigation, swimming pools, fish farming and water distribution. Monoblock body prevents ball blow-out. Ball shaft with failsafe feature. Backing O
- Connection: Socket Weld / Solder
- Material: Other
- Pressure Rating: 232 psi
- Valve Size: 1.5 inch
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Supplier: RS Components, Ltd.
Description: Compact ball valve type 353 PVC-U with solvent cement sockets. Suitable for applications with water and generally used in agriculture, irrigation, swimming pools, fish farming and water distribution. Monoblock body prevents ball blow-out. Ball shaft with failsafe feature. Backing O
- Connection: Socket Weld / Solder
- Material: Other
- Pressure Rating: 232 psi
- Valve Size: 1 inch
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Supplier: International Polymer Solutions Inc.
Description: include three options for the Body, Piston and Cap Assembly: PVC, Polypropylene or PVDF. For the highest level of chemical inertness and overall fluid handling performance all three configurations include 100% Virgin PTFE for the Bellows and Backing Plate construction. O-Ring Seal
- Actuation: Pneumatic
- Connection: Threaded, Socket Weld / Solder
- Media Description: Water (General)
- Media Temperature: 140 F
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Supplier: Clark Solutions
Description: from a 1/2" NPT conduit port. The valves are a one-piece, compact design, non-union type. O-rings are EPDM, seats are PTFE with EPDM backing cushions. PVC conforms to ASTM D1784 Cell Classification 12454-A, and CPVC conforms to ASTM D1784 Cell Classification 23567-A. The valves are
- Actuation: Electric
- Connection: Socket Weld / Solder
- Flow (Cv): 7.7 to 185
- Media Temperature: 30 to 120 F
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Supplier: ASME
Description: tolerances). Coverage includes preparation for joints with the following: no backing rings; split or noncontinuous backing rings; solid or continuous backing rings; consumable insert rings; gas tungsten arc welding (GTAW) of the root pass.
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Supplier: ASME Standards and Certification
Description: tolerances). Coverage includes preparation for joints with the following: no backing rings; split or noncontinuous backing rings; solid or continuous backing rings; consumable insert rings; gas tungsten arc welding (GTAW) of the root pass.
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Supplier: Assured Automation
Description: three ports. Smooth machined ball to minimize wear on valve seats. O-ring backing cushions to compensate for wear and prevent seizure of the ball. Shear point above the o-ring to maintain system integrity in the unlikely event of a stem breakage. DUAL BLOCK®
- Actuation: Manual / Hand, Electric, Pneumatic
- Connection: Socket Weld / Solder, Threaded
- Flow (Cv): 2.45 to 224
- Material: PVC
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Supplier: National Bronze & Metals Inc.
Description: "70/30": INDUSTRIAL: Pump Impellers, Heat Exchanger Tubes, Evaporator Tubes, Distiller Tubes, Condenser Plates, Refrigerators, Process Equipment, Condenser Components, Ferrules, Welding Backing Rings, Flexible Metal Hose, Weld Wire, Boiler Parts, Condensers, Propeller
- AISI / AA / CDA Grade: 715
- Alloy: Yes
- Applications: Marine, Wear Parts / Tooling
- Features: Corrosion Resistant
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Supplier: Hammond Manufacturing Company Inc.
Description: ) for easy P.C. board mounting. Photo Features No mounting flanges Spot-welded bottom flange Wall-mounting flange integrated into lid. Lap joint construction where lid and box meet. Water-tight versions and gasket upgrades available for most sizes
- Depth: 2.22 inch
- Ingress Protection(IP) Rating Against Foreign Objects: Type 6
- Ingress Protection(IP) Rating Against Moisture: Type 5
- Length / Height: 4.7 inch
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Supplier: Hammond Manufacturing Company Inc.
Description: ) for easy P.C. board mounting. Photo Features No mounting flanges Spot-welded bottom flange Wall-mounting flange integrated into lid. Lap joint construction where lid and box meet. Water-tight versions and gasket upgrades available for most sizes
- Depth: 2.32 inch
- Ingress Protection(IP) Rating Against Foreign Objects: Type 5
- Ingress Protection(IP) Rating Against Moisture: Type 4
- Length / Height: 4.72 inch
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Supplier: Hammond Manufacturing Company Inc.
Description: ) for easy P.C. board mounting. Photo Features No mounting flanges Spot-welded bottom flange Wall-mounting flange integrated into lid. Lap joint construction where lid and box meet. Water-tight versions and gasket upgrades available for most sizes
- Depth: 1.73 inch
- Ingress Protection(IP) Rating Against Foreign Objects: Type 5
- Ingress Protection(IP) Rating Against Moisture: Type 4
- Length / Height: 4.35 inch
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Supplier: Hammond Manufacturing Company Inc.
Description: ) for easy P.C. board mounting. Photo Features No mounting flanges Spot-welded bottom flange Wall-mounting flange integrated into lid. Lap joint construction where lid and box meet. Water-tight versions and gasket upgrades available for most sizes
- Depth: 1.55 inch
- Ingress Protection(IP) Rating Against Foreign Objects: Type 5
- Ingress Protection(IP) Rating Against Moisture: Type 4
- Length / Height: 5.72 inch
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Supplier: FX PCB Co., Ltd.
Description: layer 4mil/4mil (1Oz) 3mil/3mil (1Oz) Annular Ring =4mil / BGA 0.15mm BGA 0.15mm BGA Tolerance of outline (board edge to board edge) +/-0.025mm / Tolerance of outline (Mark to board edge) +/-0.05mm +/-0.025mm Impedance control +/-10% / Drilling machine drilling
- Thickness: 0.0157 inches
- Type: Film / Flexible Substrate
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might feature traditional malleable iron or lower steel stamping that helps adjust the wrenches perfectly. 8) Square Drive Ratchet Wrenches Square drive ratchet wrenches are perfect for ratcheting line-up clamps during welding (read more)
Browse Hand Tools Datasheets for Lowell Corporation
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Backing Ring Welding Procedure (.doc)
Robvon Backing Rings are inserted into the beveled pipe end with the spacer nubs flush against the pipe land and the ring gap positioned in the area of first bead deposition. The beveled end of the adjoining pipe is slipped onto the Robvon backing ring until the edge of the pipe land is firmly
More Information Top
Indicates content that may require registration and/or purchase.
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Corrosion of Weldments
Equipment crevices, such as weld backing rings , tube- tubesheet joints, or flanged connections, are common sites for localized corrosion in the process environment.
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Nalco Guide to Cooling Water Systems Failure Analysis, Second Edition > Biologically Influenced Corrosion
The circumferential weld backing ring was severely corroded.
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Nalco Guide to Boiler Failure Analysis, Second Edition > Corrosion during Cleaning
Acid corrosion beneath weld backing ring .
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ZCORW2006P043
Corrosion Associated with Weld Backing Rings .
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ZASMHBA0003622
Corrosion Associated with Weld Backing Rings .
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Piping Handbook, Seventh Edition > DESIGN BASES
The system can be assembled with internal weld backing rings to reduce fit-up and welding costs, but backing rings create internal crevices, which can trap corrosion products.
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Cast Steel And Hollow Sections – New Applications And Technologies
Variant 3: bevelled, with tack- welded backing rings (t = 3 to 4 mm) Variant 4: Backing with cast- on nose .