255
Beau Geste, IRC 52, Cookson Boats, 
Botin Partners Naval Architecture © Paul Stubbs
MVP valve 
panels
1
2
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
1  Valves, manifolds, standard valve panels corrosion-resistant, hardcoat-anodized 
aluminum; stainless fittings for strength.
2  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.
•  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
Single Acting
GrandPrix
Single Acting
Short shaft
Relief valve
Inline
Double-acting
Grand Prix
Long shaft
Single-sided 
manifold
Double-sided 
manifold
Remote 
dump valve
Handle 
socket
•  Inline relief valves: control maximum 
system 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 
accommodate 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 manifolds 
have same open/closed positions; rotation 
direction for easy access. 
•  Valve stems have tapered shaft to fit 
handle socket for secure, tight fit.
Seal/Repair Kit Part Number
Type
R = Repair
S = Seal
1 = Single Acting
2 = Double Acting
D = Dump
R = Relief
S = Selector
Y = Wye
Valve Type
T = Thru Deck
X = Panel Mount
S = String
E = Electric
HYKRV1T

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