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Integral Hydraulic Backstay Adjusters

Integral Hydraulic Backstay Adjuster provides the power to optimize sail shape quickly. A built-in, double-action pump delivers oil when the handle is both pushed and pulled, moving oil through the system twice as fast as single-acting pumps on other integrals.

Assemblies include a hardcoat-anodized aluminum cylinder and pump, valve, gauge, and stainless pump handle with three attachment options: pin installs handle permanently; O-ring secures handle in socket, but is not permanent; nonlocking handle installs without O-ring and roll pin. All pins and plugs are stainless steel.

Pressure release knob turns clockwise to close and pump, counterclockwise to release. When closing the pump, the knob cannot be over-tightened by hand, preventing damage to the valve. Release speed depends on how far open the knob is turned. Pressure relief is factory set to prevent crew from over-tensioning the backstay.

An analog gauge with pressure increments reading 0-5 (0-5000 psi) is prominently mounted at the top of the cylinder. The gauge adjusts to four positions for easy viewing from the cockpit. Cylinders include a clevis on both ends and fit standard eye-jaw toggles. Four sizes to fit boats with 5 to 10mm (7/32" to 3/8") wire, or boats approximately 30' to 60' in length.

Product Models
Description WM Model # MFG Part # Availability Price Quantity  
-6 Integral Backstay Cylinder; Max. Wire: 7/32"; Pin Center Length (Closed): 30"; Pin Diameter: 7/16" Stroke: 13 1/2"; Pull Force @ 3,000psi: 3,175lb.; Weight: 7.4lb.; Breaking Load: 7,000lb. 15204449 HCI025110345BCC
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$1,448.48

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-10 Integral Backstay Cylinder; Max. Wire: 9/32"; Pin Center Length (Closed): 30"; Pin Diameter: 1/2"; Stroke: 13 1/2"; Pull Force @ 3,000psi: 3,490lb.; Weight: 7.4lb.; Breaking Load: 12,364lb. 15204456 HCI035130345BCC
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$1,448.48

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-12 Integral Backstay Cylinder; Max. Wire: 5/16"; Pin Center Length (Closed): 32 13/16"; Pin Diameter: 5/8" Stroke: 15 1/2"; Pull Force @ 3,000psi: 3,490lb.; Weight: 10.8lb.; Breaking Load: 12,364lb. 15204464 HCI040160385BCC
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$1,701.40

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-17 Integral Backstay Cylinder; Max. Wire: 3/8"; Pin Center Length (Closed): 32 13/16"; Pin Diameter: 5/8" Stroke: 15 1/2"; Pull Force @ 3,000psi: 6,295lb.; Weight: 10.8lb.; Breaking Load: 20,984lb. 15204472 HCI045160385BCC
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$1,701.40

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Integral Hydraulic Backstay Adjuster provides the power to optimize sail shape quickly. A built-in, double-action pump delivers oil when the handle is both pushed and pulled, moving oil through the system twice as fast as single-acting pumps on other integrals.

Assemblies include a hardcoat-anodized aluminum cylinder and pump, valve, gauge, and stainless pump handle with three attachment options: pin installs handle permanently; O-ring secures handle in socket, but is not permanent; nonlocking handle installs without O-ring and roll pin. All pins and plugs are stainless steel.

Pressure release knob turns clockwise to close and pump, counterclockwise to release. When closing the pump, the knob cannot be over-tightened by hand, preventing damage to the valve. Release speed depends on how far open the knob is turned. Pressure relief is factory set to prevent crew from over-tensioning the backstay.

An analog gauge with pressure increments reading 0-5 (0-5000 psi) is prominently mounted at the top of the cylinder. The gauge adjusts to four positions for easy viewing from the cockpit. Cylinders include a clevis on both ends and fit standard eye-jaw toggles. Four sizes to fit boats with 5 to 10mm (7/32" to 3/8") wire, or boats approximately 30' to 60' in length.

Specs