b"Choosing Hydraulic Systems Standard System1. Cylinders Load and Pin Sizes: Cylinder size is determined by cylinder load and pin size.FunctionStroke length is based on cylinder function. See page 232 to select cylinder.SuctionDouble-pull, locking, and boom vang cylinders are also available. See charts forReturnloads, pin sizes, and stroke lengths.BackstayAlternate End Fittings: Choosing the correct end fittings for your cylinders is critical. See page 233 for end-fitting options. 2. Control Valves VangSelect valves based on sailing style and valve style, type, and functions. Choose between multifunction panel and individual valves, standard or Grand PrixMultifunction valve panel/styles. Single- or double-acting valves are based on cylinder type.2-speed pumpIndividual Valve Assemblies: Individual valve assemblies are dependent on how the boat is sailed. Determine if there are multiple or single control loca-tions. Choose valve, manifold configurations, and panel types. See page 240. 4-liter Multifunction Valve Panels and Single-function Panels: Choose platevented materials. Single and multifunction panels come with a 2-speed pump, pumpreservoirhandle, and reservoir. See page 241. Remote Dump Valves: Determine if there are remote dump valves required.Example: vang cylinders.Suction filter3. Pumps and HandlesIndividual valves require a separate pump. How many? Choice depends on oil volume, how fast oil must move, and pressure required. Select adequate handle. See pages 243-244.Grand Prix System4. Reservoirs Reservoir Type: Reservoir type is determined by the amount ofFunctionoil needed and pump height relative to the reservoir. Use a pres- Pressuresurized reservoir if it is mounted more than 1.5 m (5') verticallySuctionbelow the pump. Vented reservoirs are adequate under 1.5 m (5').ReturnReservoir Size: As a general rule, select reservoir size by adding3-valve manifold/ Vangup cylinder volumes and multiplying by 2.pressure relief Outhaul3-speed Vang Outhaul Headstay5. Accessories hand pumpFilters: Harken highly recommends a high-pressure filter between the pump and valves to keep valves working at peak performance. Also required is a suction filter for the pump to prevent debris from entering the system. Gauges: Remote analog gauges and digital transducersString-pull are available.dump Fittings: Plumbing fittings, additional spares, and spare partsvalve High-Headstayavailable. See page 245-246. pressure filterHose: Harken offers hoses and fittings for both high- and low-pressure plumbing needs. Harken can also provide complete hose assembles to your specification. All high-pressure hose assemblies are flushed before shipping. See page 246.14 liter pressurized reservoirVang Outhaul Headstay Return filter (optional)3-speed hand pump3-valve manifoldSuction filter247"