Pilot Operated Relief Valves

Parker’s pilot operated relief valves are designed for continuous duty applications featuring great stability with low pressure drop; working with pressures up to 420 bar (6000 psi) and flows up to 400 lpm (106 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 400 lpm (106 gpm) in a reliable and compact design. Parker’s pilot operated relief valves are ideal for limiting system pressure or in standard relief valve applications within mobile and industrial equipment such as agricultural, aerial, refuse, industrial power unit systems, mining equipment, and other heavy duty fluid power pressure control circuits.

Markets:
• Miscellaneous Industrial
• Miscellaneous Manufacturing
• Miscellaneous Mobile

Features/Benefits:
• High pressure and flow capacity
• Low leak ball and poppet designs
• Compact design
• Internal screens
• Hardened, precision ground parts for durability
• All external parts zinc plated

Applications:
• System pressure limiter
• Port/cross-port relief
• Swing relief
• Motor braking

Additional Technical Insight:
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. Spool type relief valves should not be used in load holding application.

Характеристики

Расход:	20, 30, 50, 80, 100, 106 Gal/min, 75.8, 113, 189.5, 302.8, 379, 400 L/min
Максимальное расчетное давление на входе:	3000, 5000, 5500, 6000 psi, 210, 350, 380, 420 bar
Диапазон регулирования давления:	100-1000, 100-2000, 200-2000, 145-3000, 200-3000, 300-3000, 200-5000, 500-5000, 145-6000 psi, 6.9-69, 6.9-138, 13.8-138, 10-210, 13.8-210, 20.7-210, 13.8-350, 34.5-350, 10-420 bar
Регулировочный механизм:	Fixed, Knob, Screw, Tamper Resistant
Материал уплотнения:	D-Ring (Standard), Fluorocarbon, Nitrile
Максимальный расход:	20, 30, 50, 80, 100, 106 Gal/min, 75.8, 113, 189.5, 302.8, 379, 400 L/min
Максимальное рабочее давление:	3000, 5000, 5500, 6000 psi, 210, 350, 380, 420 bar
Максимальное давление в баке:	5000, 6000 psi, 350, 420 bar
Стандартное давление посадки:	500, 1000, 1450, 1500, 2500, 2900 psi, 34.5, 69, 100, 103.5, 172.4, 200 bar
Уставка максимального давления:	1000, 2000, 3000, 5000, 6000 psi, 69, 138, 210, 350, 420 bar
Чувствительность регулирования давления:	N/A, 285 per turn, 334 per turn, 435 per turn, 539 per turn, 570 per turn, 800 per turn, 855 per turn, 867 per turn, 1711 per turn, 1910 per turn psi, N/A, 19.6 per turn, 23 per turn, 30 per turn, 37 per turn, 39.3 per turn, 55 per turn, 59 per turn, 59.7 per turn, 118 per turn, 131.6 per turn bar
Давление закрытия:	N/A, 80% of pressure setting, 90% of pressure setting
Тип срабатывания:	Pressure Sensing
Конфигурация:	Pressure Relief
Интенсивность утечек:	82 @ 75% Crack Pressure, 5 per @ 100 psi (6.8 bar) setting, 100 @ 1450 psi (100 bar) cm3/min
Тип монтажа:	Screw in cartridge valve
Размер полости:	C08-2, C10-2, C12-2, C16-2, C20-2
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:	21, 32-36, 51-55, 56, 74 lb-ft, 28, 43-49, 69-75, 76, 100 Nm
Рабочая температура:	-35 to +200, -30 to +250, -15 to +400 °F, -37 to +93, -34 to +121, -26 to +204 °C
Максимальная рабочая температура:	+200, +250, +400 °F, +93, +121, +204 °C
Минимальная рабочая температура:	-35, -30, -15 °F, -37, -34, -26 °C
Вес:	0.2, 0.48, 0.5, 0.75, 1.26, 2 lb, 0.09, 0.22, 0.23, 0.34, 0.57, 0.9 kg
Материал корпуса:	N/A