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Dixon® B45

Dixon® Boss™ B45 Zinc-Plated Iron 6-Bolt Clamp, 4 in, 9-1/32 in W, 6-7/32 in Thick

  • Manufacturer: Dixon Valve & Coupling
  • Brand: Dixon®
  • ARGPN: B45
  • MPN: B45
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  • ARG Industrial Available for pickup at Anchorage, AK Branch: loading
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Dixon® Boss™ 6-Bolt Clamp, Nominal Size: 4 in, 4.62 in Maximum Clamp Diameter, 5 in Minimum Clamp Diameter, Locking Style: Bolt, Torque Rating: 150 ft-lb, Material Construction: Iron, Finish: Zinc-Plated, 9-1/32 in Width, 6-7/32 in Thickness, 450 deg F Steam Service

California residents see Prop 65 WARNINGS

Finish      :      Zinc-Plated
Locking Style      :      Bolt
Material      :      Malleable Iron
Material Construction      :      Iron
Maximum Clamp Diameter      :      4.62 in
Minimum Clamp Diameter      :      5 in
Nominal Size      :      4 in
Product Type      :      Bolt Clamp
Temperature Rating      :      450 deg F Steam Service
Thickness      :      6-7/32 in
Torque Rating      :      150 ft-lb
Width      :      9-1/32 in
  • Six-bolt type clamp with three gripping fingers and three clamp sections
  • Bolts in boss clamps are designed to bend as they are tightened, this allows the clamp to conform to the hose outside diameter
  • Always tighten bolts to their specified torque value
  • Periodic re-tightening of bolts is required due to "cold flow" phenomenon present in all rubber hoses
  • Recommended for steam service up to 450 deg F

Applications: For steam service up to 450 deg F


  • 6-Bolt Dixon® Boss™ clamp bolt tightening sequence, using a torque wrench, begin tightening the bolts as follows: A) Back bolt (bolt with nut facing assembler that is furthest away from gripping finger) having "X" near it one full turn.
  • B) Front bolt (bolt with nut facing assembler that is closest to gripping finger) of same segment one full turn.
  • C) Moving to clamp segment to the left of the one just tightened, snug bolts by hand (if bolts are loose).
  • D) Back bolt to one full turn.
  • E) Front bolt one full turn.
  • F) Moving to clamp segment to the left of the one just tightened, snug bolts by hand (if bolts are loose).
  • G) Back bolt one full turn.
  • H) Front bolt one full turn.
  • I) Repeat above procedure "a" through "h" until all of the bolts have reached the recommended torque.
  • J) Remove assembly from vise.

Safety Notes:

  • The bolts used in the Boss™ interlocking clamps are not standard bolts.
  • They vary from standard bolts in their length, diameter, overall thread length and material hardness.
  • These bolts can be retorqued, but it is not recommended that the bolts or clamps be reused, as they are designed for a single bend only.
  • Dixon® recommends using only factory supplied replacement bolts.
  • Replacement nuts and bolts are available, contact Dixon® for more information.
  • Torque values for clamps are based on dry bolts.
  • The use of lubricant on bolts will adversely effect clamp performance.
  • Do not lubricate nuts and bolts.
  • Recommended torque rating in ft-lb.
  • Worn-out hose couplings can be dangerous.
  • They should be checked regularly and replace when necessary.
  • Each coupling user should review applications and add safety devices where indicated.
  • Note: Pressurized steam is an extremely dangerous commodity.
  • Only hose, fittings, clamps and accessory items that have been approved for steam service should ever be used!
  • Never use an unapproved item for steam service.
  • Always follow the manufacturer's product recommendations for pressurized steam handling.
  • pdfCatalog https://www.alaskarubbergroup.com//ASSETS/DOCUMENTS/ITEMS/EN/Dixon_B4_CAT.pdf
  • pdfTechnical Drawing/Parts Diagram https://www.alaskarubbergroup.com//ASSETS/DOCUMENTS/ITEMS/EN/Dixon_B45_TD.pdf

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