HFS-W Series Hydraulic & Mechanical Flange Wedges
Engineering Overview & Structural Features
The HFS-W Series Hydraulic & Mechanical Flange Wedges provide 8 to 14 Metric Tons of parallel spreading force at 700 Bar (10,000 PSI), engineered specifically for pipeline maintenance, scheduled shutdowns, hydro-testing, and valve change-outs. Requiring a first-step access gap of only 6 mm and expanding smoothly up to 81 mm, the unique interlocking stepped wedge geometry prevents joint slip-out and eliminates flange surface damage.
Ultra-Slim 6 mm Tip Clearance
Entry wedge requires an insertion gap of only 6 mm (0.24"), allowing fast access into tight pipe joints, corroded flange pairs, and compact manifold connections.
Non-Slip Interlocking Wedges
Precision-machined stepped wedge arms maintain positive interlocking engagement under full load, preventing the tool from slipping out of the joint during spreading operations.
Included Safety Stepped Blocks
Each tool includes stepped safety blocks to securely lock flange separation up to 81 mm, allowing technicians to safely inspect faces and change gaskets with zero risk of sudden closure.
Dual Hydraulic & Mechanical Drives
Available in 14-Ton hydraulic drive with integrated single-acting spring return cylinder or 8-Ton mechanical ratchet drive with 310 mm reversible lever for non-hydraulic field mobility.
Authentic engineering blueprint illustrating mechanical ratchet model (Left: closed/opened wedge kinematics, 310 mm lever) and 14-ton hydraulic model (Right: sectional geometry, C length, D jaw width, and E handle profile) matching the selection matrix below.
OEM Cross-Reference & Dimensional Interchangeability
Single-acting hydraulic and mechanical ratchet stepped wedge flange spreaders rated for 700 Bar (10,000 PSI), engineered for pipeline maintenance, shutdowns, testing, and valve change-outs with a 6 mm access gap and 8 to 14 Ton spreading capacities. 8 - 14 Ton Wedge Force.
Enerpac®, SPX Flow®, Power Team®, Simplex®, Hytorc®, Holmatro® and other brand names are registered trademarks of their respective owners. HydraStark is an independent manufacturer and is not affiliated with, authorized or endorsed by these companies. OEM model numbers are listed for dimensional and specification reference only; please verify fit with our engineers before ordering.
MAX PRESSURE
700 Bar (10,000 PSI) Rating
CAPACITY RANGE
8 to 14 Ton Spreading Force
TIP CLEARANCE
6 mm Access Gap (A)
Real Product Details & Build Quality
Specifications
Model Number | Drive Mechanism | Spreading Force ton | Wedge Stroke mm | Tip Thickness (A) mm | Max. Spread (B) mm | Cyl. Area mm² | Weight kg | Dimensions (mm) | ||
|---|---|---|---|---|---|---|---|---|---|---|
C (Length) mm | D (Width) mm | E (Handle) mm | ||||||||
| HFS-W-14 | Hydraulic (700 Bar) | 14 | 121 | 6 | 81 | 1,451 | 7.5 | 290 | 66 | 133 |
| HFS-W-8 | Mechanical (Ratchet) | 8 | 121 | 6 | 81 | - | 6.5 | 290 | 66 | - |
Required System Components
Frequently Asked Questions
Q1How does the HydraStark HFS-W compare with the Enerpac FSH?
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How does the HydraStark HFS-W compare with the Enerpac FSH?
The HydraStark HFS-W range (HFS-W Series Hydraulic & Mechanical Flange Wedges) is positioned as an alternative to the Enerpac FSH (OEM part numbers such as FSH-14, FSM-8, FSM-14). Enerpac is a registered trademark of its owner; the reference is provided for dimensional and technical comparison only. Mounting dimensions, ratings and interfaces are listed in the specification table on this page — please confirm them against your existing equipment, or send us your OEM part number and our engineers will check compatibility before you order.
Q2What are the key specifications of the HFS-W?
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What are the key specifications of the HFS-W?
Max Pressure: 700 Bar (10,000 PSI) Rating; Capacity Range: 8 to 14 Ton Spreading Force; Tip Clearance: 6 mm Access Gap (A); Max Spread: Up to 81 mm Opening (B); Drive Mechanism: Hydraulic (700 Bar) & Mechanical Ratchet. Full specifications and dimensions are given in the specification table below.
Q3Which models are available in the HFS-W series?
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Which models are available in the HFS-W series?
The specification table lists 2 models: HFS-W-14, HFS-W-8. For non-standard requirements, please describe them in the inquiry form.
Q4How is the HFS-W tested before shipping?
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How is the HFS-W tested before shipping?
Each unit is tested at 125% of its rated pressure before shipping (700 Bar rated, 875 Bar test pressure). Compliance listed for this model: Interlocking Wedges with Safety Block.
Q5What are the lead time, warranty and shipping options for the HFS-W?
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What are the lead time, warranty and shipping options for the HFS-W?
Lead time is typically 2–3 business days when the model is in stock and 7–35 business days otherwise. Warranty is 12 months after receipt of goods. Shipping is available by sea freight, air freight or international express (DHL, FedEx, UPS). Send your requirements through the inquiry form for an exact quotation and delivery date.