Pilot Operated Relief Valve with Free Reverse Check

Parker’s pilot operated relief valves are designed for continuous duty applications and features a spool type pilot operated valve with an integrated reverse flow check; working with pressures up to 420 bar (6000 psi) and flows up to 350 lpm (92 gpm).

Полное описание продукта

Parker’s pilot operated relief valves provide a stable design with low pressure drop meant for continuous duty applications while operating with less hydraulic noise. These valves can work with pressures up to 420 bar (6000 psi) and flows up to 350 lpm (92 gpm) in a reliable and compact design that contains an integrated free reverse flow check valve. Parker’s pilot operated relief valves are ideal for relief or load holding applications within mobile equipment such as agricultural machinery, aerial equipment, refuse vehicles, industrial power unit systems, mining equipment, and other heavy duty fluid power pressure control circuits.

Markets:
• Agriculture
• Aerial
• Material Handling
• Miscellaneous Industrial
• Miscellaneous Manufacturing
• Miscellaneous Mobile

Features/Benefits:
• High flow capacity
• Leak free
• Compact design
• Hardened, precision ground parts for durability
• All external parts zinc plated
• Adjustable, fixed, or tamper resistant adjustments available

Applications:
• Load holding
• Actuator control
• Motor control

Additional Technical Insight:
This particular model of spool type pilot operated valve has a reverse check. This allows flow to pass in the opposite direction, port 2 to 1. This may be advantageous in an anti-cavitation application, or where reverse flow needs to be accommodated.

Pilot operated relief valves are available is -08 to -20 size cavity configurations. This family of valves is best suited for continuous duty systems where the valve is asked to operate beyond any intermittent use. They can be used to maintain system pressure for long periods of time. Additionally, where systems may have large rates of change in flow, the pilot operated valves can accommodate these changes without excessive pressure rise or sometimes called pressure override. Due to the flow opening areas through the valve, these spool type valves will operate more quietly than a conventional direct acting valve. One must also consider the leakage component as the spool is, by design, going to pass a small leakage flow, whereas a direct acting valve does not pass significant flow until the cracking pressure is reached.

Характеристики

Расход:	106 Gal/min, 400 L/min
Регулировочный механизм:	Knob, Screw, Tamper Resistant
Материал уплотнения:	Nitrile, Fluorocarbon
Максимальный расход:	106 Gal/min, 400 L/min
Максимальное расчетное давление на входе:	6000 psi, 420 bar
Максимальное давление в баке:	6000 psi, 420 bar
Максимальное рабочее давление:	6000 psi, 420 bar
Уставка максимального давления:	6000 psi, 420 bar
Диапазон регулирования давления:	145-6000 psi, 10-420 bar
Стандартное давление посадки:	2900 psi, 200 bar
Чувствительность регулирования давления:	768 per turn psi, 53 per turn bar
Тип срабатывания:	Pressure Sensing
Конфигурация:	Pressure Relief w/Reverse Check
Интенсивность утечек:	5 @ 1450 psi (100 bar) drops/min
Тип монтажа:	Screw in cartridge valve
Размер полости:	C16-2
Функция:	Pilot Operated
Тип эксплуатации:	Automatic
Для типа жидкости:	Mineral-based or synthetic hydraulic fluids
Максимальная кинематическая вязкость:	45-2000 SSU (6 to 420 cSt)
Показатель эффективности фильтра:	ISO 4406 18/16/13, SAE Class 4
Материал клапана:	All parts steel. All operating parts hardened steel
Момент затяжки при монтаже:	74 lb-ft, 100 Nm
Рабочая температура:	-30 to +250, -15 to +400 °F, -34 to +121, -26 to +204 °C
Максимальная рабочая температура:	+250, +400 °F, +121, +204 °C
Минимальная рабочая температура:	-30, -15 °F, -34, -26 °C
Вес:	1.26 lb, 0.57 kg
Материал корпуса:	N/A