Old Sumner Part Number
Varies by configuration (see individual variants)
Old B&B Part Number
Varies by configuration (see individual variants)
The B&B SUMNER Lo Heavy Duty Fold-A-Jack Series delivers the strength and reliability of the original Fold-A-Jack in a lower working height, making it ideal for tight or low-clearance pipe fabrication and installation work. Built with rugged folding-leg steel construction, oversized square tube legs, and a wide stance, these low-profile jacks provide stable, high-capacity pipe support across a full range of interchangeable head options. From standard V-heads and gusset V-heads to roller, phenolic, stainless, conveyor, ball transfer, chain vice, and base-only configurations, the Lo Fold-A-Jack lineup gives welders and pipefitters a versatile system that can be tailored to almost any job site or shop application.
Available Configurations
- 4000 – Lo Heavy Duty Fold-A-Jack with V-head: General-purpose low-height pipe support with oversized 10" V-head.
- 4000GVH – Lo Heavy Duty Fold-A-Jack with Gusset V-head: Reinforced V-head for added rigidity and control under heavy loads.
- 4000SWH – Lo Heavy Duty Fold-A-Jack with Steel Wheel Head: Steel wheel head for smooth pipe rotation during cutting and welding.
- 4000PWH – Lo Heavy Duty Fold-A-Jack with Phenolic Wheel Head: Phenolic wheels to help protect coated or stainless pipe surfaces.
- 4000SSWH – Lo Heavy Duty Fold-A-Jack with Stainless Steel Wheel Head: Corrosion‑resistant stainless wheels for harsh or washdown environments.
- 4000SSH – Lo Heavy Duty Fold-A-Jack with Stainless Steel V-head Sleeves: Stainless V-head sleeves for clean, corrosion‑resistant pipe contact.
- 4000BTH – Lo Heavy Duty Fold-A-Jack with Stainless Steel Ball Transfer Head: Stainless ball transfer head for multidirectional pipe movement and fine alignment.
- 4000PCV – Lo Heavy Duty Fold-A-Jack with Pipe Chain Vice Head: Integrated pipe chain vice for secure clamping during cutting and threading.
- 4000CRH – Lo Heavy Duty Fold-A-Jack with Conveyor Roller Head: Conveyor roller head for feeding pipe along low-height fabrication lines.
- 4000CVH – Lo Heavy Duty Fold-A-Jack with Conveyor V-head: Conveyor V-head that cradles and guides pipe while allowing axial movement.
- 4000BASE – Lo Heavy Duty Fold-A-Jack (Base Only): Low-profile folding base ready to accept compatible B&B SUMNER head options.
Key Features
- Low-profile design offers reduced working height compared to standard Fold-A-Jack models, ideal for tight spaces and under-rack piping.
- Heavy-duty folding-leg steel construction makes the stands strong in use yet easy to transport, store, and deploy.
- Oversized 10" V-head (on V-head configurations) improves pipe stability and safety during fit-up and welding.
- Oversized square tube legs and braces increase durability, rigidity, and resistance to twisting under load.
- 1½" (1.5") ACME height adjustment rod provides smooth, secure height changes even under load.
- Quick lock washer height adjustment allows fast, repeatable setup from joint to joint.
- Increased width stance offers better stability and helps reduce tipping risk in the shop or field.
- Square tube bracing delivers additional strength for heavy-duty industrial use.
- Safety washer can be locked onto the base to enhance operator safety during use and transport.
- More head options than many competing jack systems, giving you a flexible, modular solution for pipe handling and support.
Performance & Capacity
- Maximum Load Capacity: Up to 2,500 lbs (1,135 kg), depending on the selected head configuration.
- Typical Load Ratings by Head: V-head, gusset V-head, and stainless V-head sleeves up to 2,500 lbs (1,135 kg); steel and stainless wheel heads up to 2,000 lbs (910 kg); phenolic and stainless ball transfer heads up to 1,000 lbs (450 kg); conveyor and pipe chain vice heads up to 550 lbs (250 kg).
- Pipe Diameter Capacity: Up to 12" (300 mm) outside diameter across the Lo Fold-A-Jack range.
- Safety Ratio: All models third-party tested with at least a 2:1 safety ratio.
Ideal Applications
- General pipe fabrication, spool assembly, and modular skid construction.
- Installation and maintenance work in plants, refineries, power stations, and mechanical rooms with low or restricted height.
- Projects that require corrosion resistance, surface protection, or multidirectional pipe movement using stainless, phenolic, or ball transfer heads.
- Contractors and shops using combined or variant listings who want a single parent product with multiple Lo Heavy Duty Fold-A-Jack configurations under one page.
