Zawory zwrotne sterowane

Parker’s reliable pilot piston style P.O. check valves are designed for critical applications where safety and load holding is required and flows from 19 to 150 lpm (5 to 40 gpm) and pressures up to 420 bar (6,000 psi) are needed. These valves are available with pilot supply to either the 1st port or 3rd port depending on circuit need, and are generally used in conjunction with linear actuators across several markets within mobile or industrial hydraulics, such as aerials, material handling, and construction where durable and low leak valves are necessary to keep the machinery and operators safe.

Markets:
• Aerial
• Construction
• Material Handling
• Miscellaneous Mobile

Features/Benefits:
• Spherical poppet for low leakage
• Hardened precision ground parts for durability
• “D”-Ring design eliminates back-up rings
• Optional sealed pilot piston

Applications:
• Load holding without fine metering

Additional Technical Insight:
Pilot operated check valves, also known as P.O. checks, are used to lock a cylinder in a holding position with minimal leakage or drift. P.O. check valves that can be opened to allow flow in the reverse direction with an external signal to the pilot port. The valves work best when used in conjunction with a control valve that vents the valve ports to tank when centered. Pilot pressure to open the checks for reverse flow is a ratio of the holding pressure, and are typically 3:1 or 4:1. A 3:1 ratio with a 3000psi load requires a 1000psi signal to the pilot port.

The CPD084P rated at 3000 PSI with a flow rating of up to 5 GPM. The integrated pilot piston has a 3:1 pilot ratio. At rest the internal checks remain seated, blocking flow from exiting the cylinder and locking the cylinder in place. When pressure is applied to either valve port, the check valve will open allowing free flow from the inlet to the actuator port across the check valve. As pressure is applied to shift the cylinder, the internal piston will also shift to mechanically shift open the flow path across the opposite check valve, allowing flow to pass back across the valve in the return direction.

These valves are ideal for load holding applications, where metering conditions are not required.

Parker’s dual pilot operated check valves are available in pressures up to 5000 PSI and flow rates as high as 50 gallons per minute. The CDP(H) series uses a standard pilot piston and two standard Parker check valves in an assembled body.

At rest the check valves remain seated, blocking flow from entering and exiting the cylinder and locking the cylinder in place. When system pressure is applied to either valve port, the check valve will open allowing free flow from the inlet to the actuator port across the check valve. As pressure builds to shift the cylinder, the internal pilot piston, utilizing a 3:1 or 4:1 ratio, will respond quickly to the system pressure and will shift against the return check. This action mechanically pilots the valve open to allow return flow to pass through the valve from the actuator back to tank. With both ports now open, the valve is unlocked and the hydraulically powered cylinder is free to move. When system pressure is shut off to the valve, the valve will return to the holding condition restricting actuator movement and locking the system in place.

These valves are ideal for load holding applications, where metering conditions are not required.

Parker’s single pilot operated (P.O.) check valves are available in pressures up to 5000 PSI and flow rates as high as 50 gallons per minute. The CSP(H) series uses a standard pilot piston and a standard Parker check valve in an assembled body.

At rest the check valve remains seated, blocking flow from exiting the actuator port and locking the circuit in place. When pressure and flow are opened to the valve inlet, the check valve will allow free flow to the actuator. The valve assembly also utilizes an internal pilot piston with a 3:1 or 4:1 ratio. When sufficient pressure is applied to the pilot port, the piston will respond quickly and will shift against the return check. This action mechanically pilots the valve open, unlocking the circuit, to allow return flow to pass through the valve from the actuator back to tank. When system pressure is shut off to the valve, the valve will return to the holding condition restricting actuator movement and locking the system in place.

These valves are ideal for load holding applications, where metering conditions are not required.

Parker’s three way pilot operated spool valves are used to direct flow alternately from either side of a closed loop transmission for cooling or filtering. With flow ranging from 10 gpm to 24 gpm, and pressures up to 5000 psi, these valves are a versatile solution to many hydrostatic applications.

Parkers DH103 series valve is rated for 10 gpm at 3500 psi. This 3 ported valve is available in both normally open and normally closed orientation. Two versions of the normally open series are available. The DH103A series in its neutral (deactivated) position allow Port 3 open to Port 2, with port 4 blocked. Pilot pressure at Port 1 shifts the spool blocking Port 2, allowing Port 3 to be open to Port 4. The DH103A valve is a vent to atmosphere valve allowing pressure equalization in the spring chamber.

Parker’s DH103B configuration is a normally closed version of the valve. In its neutral (deactivated) orientation, Port 2 is blocked while Port 4 is open to Port 3. When a pilot signal is applied to Port 1, the spool is shifted blocking Port 4, allowing Port 3 to be open to Port 2. Unlike DH103A, the spring chamber is vented to Port 4. Care must be taken to be aware of back pressure in Port 4 being additive to the spring setting.

Parker’s DH103C series is a normally open version, operating like the DH103A series, with the exception of the vented spring chamber.

The DH103 series of valves are available with three switching pressures (40 psi, 80 psi, 160 psi) and Nitrile or Fluorcarbon seals.


Parker’s N04A4 and N04B4 are higher flow versions of the DH103B and DH103C valves. The N04A4 series operation in its neutral (deactivated) position allow Port 3 to be open to Port 4, with Port 2 blocked. When a pilot signal is activated at Port 1, the spool shifts against the spring allowing Port 3 to be open to Port 2, with Port 4 blocked. The spring chamber is vented to Port 4 so care needs to be taken with back pressure at Port 4 additive to the spring setting.

Parker’s N04B4 series operation in its neutral (deactivated) position allows Port 3 to be open to Port 2, with Port 4 blocked. When a pilot signal is activated at Port 1, the spool shifts against the spring allowing Port 3 to be open to Port 4, blocking Port 2. The spring chamber is vented to Port 4 so care needs to be taken with back pressure at Port 4 additive to the spring setting.

Parker’s N04 series of Pilot Operated Directional Valves are available with switching pressures of 73 psi and 145 psi, and are available with either Nitrile or Fluorocarbon seals.

N5 cartridge valves from Parker provide design flexibility for high pressure and high flow applications because they are actually 5-ported cartridges. Each version has 3 work ports, 1 Main pilot port, and one spring chamber vent that can sometimes be used as a second pilot / sense port. Each cartridge contains a spool that is offset by a spring to allow a non-piloted flow configuration. Once pilot pressure is applied to port 1, the spool shifts against the spring creating a second flow configuration. Multiple spool configurations, transition types, and switching pressures are available to cover a wide range of applications.

N5A125 and N5A300 cartridge valves have an open transition which connects all 3 work ports together during the shifting of the spool. Both versions operate in the same manner with the key difference being flow rating. The N5A125 is rated for 42 GPM (160 LPM) and the N5A300 is rated for 105 GPM (400 LPM.) They can be used as normally-open, normally-closed and selector directional control valves and in a wide range of pressure and/or flow control circuits. The 5th port spring chamber can be vented to tank or used as a sensing port for applications that require high flow pressure or flow control. Pressure compensation, priority flow control, pressure reducing, pressure relieving, and pressure sequencing are just a few of the applications for these extremely versatile cartridge valves.

N5B125 and N5B300 have the same respective flow ratings and operate in the same manner as the respective N5A125 and N5A300. The key difference is that N5B cartridges have a closed condition transition. Please contact your Parker Application Engineer for assistance selecting the best transition condition for your application.

N5C and N5D are similar in their operation to N5A and N5B cartridges but without the transition conditions and with either all work ports blocked or all work ports open. N5C125 and N5C300 cartridges have spools that are spring offset to a condition where all 3 work ports are open. Once pilot pressure is applied to port 1, all 3 work ports are blocked. N5D125 and N5D300 valves are spring offset to an all ports blocked condition. Once pilot pressure is applied, the spool shifts and all ports are connected together. Flow ratings for both size 125 styles is 42 GPM (160 LPM) and the size 300 styles are rated for 105 GPM (400 LPM.)

Parker’s N5 high flow 3-way 2-position control valve offering allows for application specific solutions in the most demanding applications and markets including: Power Units, Oil and Gas, Material Handling, Construction, Drills, Presses, Mixers, Agriculture, Balers, Combines, Priority Steering, Priority Braking, High Flow Pressure Compensation, etc.

Parker’s R04* series of directional valves are available both normally-open and normally-closed. Flow ranges up to 26 gpm and pressure rating of 6000 psi, these valves are used as a switching valve by sensing pressure in other parts of the circuit.

The R04*3 series valve is a 2 way, 2 position valve that is 3 ported. With port one (nose) of the valve the pilot port, main flow goes through ports 2 and 3. The spring chamber is ported to port three so care needs to be taken making sure this is the low pressure side of the circuit.

When a pilot signal is given at port one, pressure acts upon the spool lifting it against the spring and closing flow from port two to port three. Spring chamber is vented internally out port three. When the pilot signal is removed, the spring acts upon the spool forcing it open to allow flow from ports two to three. Switching pressures of 5 bar and 10 bar are available. This valve is also available in a normally closed configuration.

The R04*4 series valve is a 2 way, 2 position valve that is 4 ported. Like the R04*3 series of valves, this valve received the pilot signal at port 1, shifting the valve against the spring and closing flow from port two to port three. A fourth port is connected to the spring chamber allowing the oil to vent independently of pressure at port three.

The R04 series of valve are used as a high flow directional control valve or unloader valve. Typical markets include, but are not limited to: Aerial lift, fork lift, off-road earth moving contruction equipment, industrial special machinery, conveying systems.

Sandwich valve with pressure relief function ZUDB, sandwich plate mounting NG06. MTTFD value 150 years, flow rate maximum 5 l/min.

Zawory zwrotne sterujące z funkcją odciążania serii UR06M i US06M w rozmiarze NG06 przyczyniają się do bezproblemowego działania. Mają uniwersalne zastosowanie dzięki dwóm opcjom montażu:
• UR06M — do montażu na płycie
• US06M — do montażu na płycie warstwowej

Zawory uzupełniają szeroką gamę rozwiązań sterowanych pośrednio firmy Parker do zaworów nabojowych DIN. Ten modułowy system pozwala na udokumentowanie wielu funkcji ciśnieniowych.

Rynki:
• Przemysł

Cechy/zalety:
• Kompaktowa, sprawdzona konstrukcja będąca efektem naszego wieloletniego doświadczenia w hydraulice siłowej — zwiększa niezawodność
• Zakres ciśnienia od 70 do 350 barów — umożliwia precyzyjną regulację.
• Średni czas do niebezpiecznego uszkodzenia (MTTFD) wynosi 150 lat — gwarancja długiego okresu eksploatacji.
• Regulacja ciśnienia za pomocą nakrętki kołpakowej z plombą lub zamkiem cylindrycznym (na zamówienie).
• Natężenie przepływu maksymalnie 5 l/min.

Zastosowania:
• Nadaje się do ogólnych zastosowań hydraulicznych

Direct operated proportional pressure relief valves of the series RPDM ensure fast response times and a very low pressure drop for efficient operation. They are typically used as remote control valves for flow rates below 3 l/min. The valves complete Parker's wide pilot control range for DIN cartridge valves. By this modular system, many pressure functions are documented.

Markets:
• Industrial

Features/Benefits:
• Fast response time - optimized process speed
• Low pressure drop - resulting in low energy losses in operation
• Very low pressure adjustment of pmin - predestined as remote control valve for cartridge valve combinations
• 4 pressure stages  from 105 to 350 bar - enables fine adjustment
• 2 pressure ports, A and P  
• MTTFD value 150 years - ensures long service life
• Short delivery time for most versions - no warehousing necessary
• Flow rate maximum 5 l/min

Applications:
• Suitable for general hydraulic applications

Function:
When the pressure in port P or A exeeds the pressure setting at the solenoid, the cone opens to port T and limits the pressure in port P to the adjusted level. The optimum performance can be achieved in combination with the digital amplifier module PCD00A-400. Also available as valve for subplate mounting, see valves series RE06M*W.

The 2-way slip-in cartridge valve series S06M is a  valve with pressure sequence function for sandwich plate mounting in size NG06 and features maximum flexibility in building pressure functions. It completes Parker's wide pilot control range for DIN cartridge valves. By this modular system, many pressure functions are documented. The S06M is available either with hand knob (standard), hexagon screw with lock nut or with cylinder lock for adjustment (on request).

Markets:
• Industrial

Features/Benefits:
• Compact, proven design that represents our long-term experience in hydraulics - increases reliability
• 4 pressure ranges: 70, 175, 250 or 350 bar - enables fine adjustment
• MTTFD value 150 years - ensures long service life
• Short delivery time for most variations - no warehousing necessary
• Flow rate maximum 5 l/min

Applications:
• Suitable for general hydraulic applications

Parker hydraulically pilot operated check valves for subplate mounting series SVLA in size NG06 enable a reliable operation. They complete Parker's wide pilot control range for DIN cartridge valves. By this modular system, many pressure functions are documented. SVLA is also used as pilot valve of the slip-in cartridge check valves series SVLB.

Markets:
• Industrial

Features/Benefits:
• Compact, proven design that represents our long-term experience in hydraulics - increases reliability
• MTTFD value 75 years - ensures long service life
• Short delivery time - no warehousing necessary
• Flow rate maximum 5 l/min

Applications:
• Suitable for general hydraulic applications

The pilot valves with preload function series DSBA100 in NG06 are available in two versions:

• DSB*P* for subplate mounting
• DSB*Z* for sandwich plate mounting

The DSBA100 completes Parker's wide pilot control range for DIN cartridge valves. By this modular system, many pressure functions are documented.

Features:
• Pressure range from 70 to 350 bar
• Flow rate maximum 5 l/min
• Pressure adjustment via hexagon screw with lock nut or cylinder lock (on request)
• MTTFD value 150 years

The proven pilot valves with pressure relief function series R06M and RS06M in NG06 contribute to a reliable operation and complete Parker's wide pilot control range for DIN cartridge valves. By this modular system, many pressure functions are documented. The R06M and RS06M represent two mounting options:
• R06M for subplate mounting
• RS06M for sandwich plate mounting

Markets:
• Industrial

Features/Benefits:
• Compact, proven design that represents our long-term experience in hydraulics - increases reliability
• Pressure range from 105 to 350 bar - enables fine adjustment
• MTTFD value 150 years - ensures long service life
• Short delivery time for most variations - no warehousing necessary
• Flow rate maximum 5 l/min
• Pressure adjustment via acorn nut with lead seal or cylinder lock (on request)

Applications:
• Suitable for general hydraulic applications

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