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Parker’s K04G3 shuttle is typically used mobile braking circuits where two accumulators are used. It serves two functions: Ensuring that the accumulators are charged equally and at the same rate, and as a guard against pressure loss should one of the accumulators fail. Connected to the main supply source, the K04G3 will divide flow between two hydraulic accumulators and charge them to be used as an auxiliary source of power for braking circuits. Used in conjunction with a check valve and unloading valve (Parker RU101), the accumulators charge to a preset pressure and will unload the charge pump, or divert flow to other parts of the system. In the event one of the accumulators fail, the K04G3 valve will shift to protect the good one. Parker’s K04G3 is rated for 30 LPM (7.9 GPM) and up to 350 Bar (5000 PSI).

In closed loop hydrostatic transmission systems, it is often necessary to bleed off some of the oil from the circuit and replace it with cool, clean oil from a charge replenishing pump. The hot oil is typically routed through a filter and cooler before returning to the reservoir. System designers use a hot oil shuttle valve to achieve this. Higher pressure fluid from the loop causes the shuttle valve to shift allowing oil from the low pressure side of the loop to be ported out the common port. These valves are usually used in conjunction with a relief valve. Parker’s K04C3 and K3A125 valves are high flow (15 gpm and 28 gpm respectively) with the K04C3 capable of 6000 psi and 5 switching pressures and K3A125 capable of 5000 psi and 2 switching pressures.

Parker insert shuttle valves are three port devices that consist of two inlet ports and one outlet. The insert feature creates design flexibility and reduces space by allowing the cartridges to be buried inside manifolds. The valves act as resolvers by allowing flow from the inlet port with the highest pressure to be directed to the outlet port. Flow from the lower pressure inlet port is blocked. K2A005 is a robust poppet type shuttle valve capable of flows up to 10GPM and pressures as high as 5000 PSI. KSWA3 utilizes a ball type design and is capable of 2.5GPM flows and pressures up to 6000 psi.

Typical applications include Load Sense and brake release functions and typical markets include Power Units, Agriculture, Construction, Material Handling and Cranes.

Shuttle valves accept the flow and pressure from two different sources and direct the highest pressure to a single outlet port. Shuttle valves are typically used in Load Sensing circuits as well as Brake circuits. Parker offers many different types of shuttles, including ball type, spool type, and poppet type. There are a number of configurations available such as cartridge type, insert type, and an in-line version.

ASH shuttle valves are in-line mounted three port devices that consist of two inlet ports and one outlet. The valves act as resolvers by allowing flow from the inlet port with the highest pressure to be directed to the outlet port. Flow from the lower pressure inlet port is blocked. ASH-06 consists of a steel body with three SAE-6 ports and an internal shuttle ball. ASH-04 is identical in design but adds three JIC port adapters to allow connection to -4 JIC hoses or tube fittings.

Typical applications include Load Sense and brake release functions and typical markets include Power Units, Agriculture, Construction, Material Handling and Cranes.

Parker's solid shuttle valve series SSR is a threaded cartridge valve in size NG06 or NG10 for a wide variety of applications. Since all parts are assembled in one unit, it is easy to mount and thereby ensures a cost-efficient installation.

Markets:
• Industrial

Features/Benefits:
• Little space required - for compact system design
• Easy assembly - saves costly time
• Leak-free - ensures reliable operation
• Short delivery time for most variations - no warehousing necessary

Applications:
• Suitable for general hydraulic applications

2-way slip-in cartridge valves are hydraulically controlled seat valves that are designed for compact block installation. Slip-in cartridge, cover and pilot system are components of Parker's modular DIN cartridge system which permits single and combined functions. The cover with shuttle valve series C*V and cover with shuttle valve and pilot system mounting series C*W for 2-way slip-in cartridge valves are universally applicable.

Features
• Comprehensive range
• 6 different sizes from NG16 to NG63

Benefits
• Allow maximum flexibility for single and combined functions
• Short delivery times

The shuttle valves for sandwich plate mounting series ZSRA and ZSRB in size NG06 complete Parker's wide pilot control range for DIN cartridge valves. By this modular system, many pressure functions are documented. ZSRA provides flow direction P to A or P, ZSRB is for flow direction A to B or A.

Features:
• Flow rate maximum 5 l/min
• MTTFD value 150 years
• Short delivery time, no warehousing necessary