239
Beau Geste, IRC 52, Cookson Boats, 
Botin Partners Naval Architecture © Paul Stubbs
MVP valve 
panels
Harken offers a complete line of lightweight, low-profile valves and 
manifolds for hydraulic systems. Harken standard valves are half the 
weight of most styles, with Grand Prix versions sculpted to eliminate 
more weight. An independent pressure-relief function in each valve 
allows you to match the hydraulic power to each individual function’s 
working loads. An adjustable flow control integrated into each valve 
fine-tunes the speed of release.
High-strength, lightweight
•  Valves, manifolds, standard valve panels corrosion-resistant, hardcoat-anodized 
aluminum; stainless fittings for strength.
• Lightweight composite handles textured, contoured for secure grip.
Valves with independent relief, release, and flow match system loads
• Each valve has independent pressure relief for individualized pressure adjustment. 
• Each valve has integrated adjustable flow control for fine-tuning release speed.
• Minimum flow rate is 8 L/min (2.1 gpm).
• Pressure relief and release combined into one part saves weight.
HYDRAULIC VALVES & MANIFOLDS
DO NOT use Harken equipment for human suspension unless product is specifically certified and labeled for such use.
Standard
GrandPrix
Short shaft
Relief valve
Double-acting
Long shaft
Single-sided 
manifold
Double-sided 
manifold
Remote 
dump valve
Handle 
socket
•  Inline relief valves: control maximum sys-
tem pressure; inline relief valves work with 
any manual system, manifold-mount reliefs 
fit Harken manifolds.
•  Remote dump valves: ease sail controls 
from helm, rail, other positions on boat; 
use as quick release or regulate speed with 
optional adjustable flow control. 
•  Single- and double-sided manifolds accom-
modate up to nine valves for multiple 
functions.
Options
•  Standard valves and manifolds handle up to 
5,000 psi; sculpted Grand Prix valves and 
manifolds handle up to 10,000 psi.
•  Valves offered with short and long shafts: 
short shaft fits 3 mm-thick deck/panel; long 
shaft 4 mm to 25 mm-thick deck/floor.
•  Double-acting valves for traveler controls, 
other functions using twin or double-acting 
cylinders.
Valve handles fit in four directions 
for easy operation
•  Inverted handles on double-sided mani-
folds have same open/closed positions; 
rotation direction for easy access. 
•  Valve stems have tapered shaft to fit 
handle socket for secure, tight fit.

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