NVH101S

Parker’s family of needle valves feature a highly contamination tolerant design that allows for fine metering with manual adjustment to create and orifice and control flow. These valves can operate with hydraulic system flows as high as 225 lpm and pressures up to 420 bar with the option of an integrate reverse free-flow check valve. Parker’s needle valves or needle-check valves are ideal for cylinder or motor control and/or bleed-off applications within a broad range of markets, such as the agriculture, construction, material handling, industrial, oil & gas, and several more.

Markets:
• Agriculture
• Construction Equipment
• Material Handling Equipment
• Miscellaneous Industrial
• Miscellaneous Mobile
• Oil & Gas

Features/Benefits:
• High flow capacity from a small cavity
• Manual shutoff with extremely low leakage
• Fine adjustment control/sensitivity
• Very tolerant to contamination
• Tamperproof options available
• Free-flow reverse check available
• All external parts zinc plated

Applications:
• Accumulator bleed-off
• Motor speed control
• Cylinder speed control

Additional Technical Insight:
Needle valves offer economical solutions for applications that require basic adjustable control of hydraulic flow. The effective orifice size inside the valve is varied with screw or knob adjustments and the valve can be made tamper resistant with the addition of an optional cap.  Shutoff can be achieved when the valve is adjusted completely closed.  Once the adjustment is set, the valve acts as a fixed orifice.  Like all fixed orifices, any changes in pressure will cause changes in flow.  If constant flow is required regardless of system or load pressure, please consider Parker’s pressure compensated flow controls. Parker’s J02A2, NVH081, NVH101, and J06A2 cartridges are standard 2-port needle valves with fine adjustment options available.  The orifice will meter in both directions, but flow from port 2 to 1 is preferred.  If unrestricted reverse flow is required, an additional check valve will need to be used with these needle valve versions. Parker also offers J02B2, FV101, and FV102 needle valves with internal reverse free flow checks in order to reduce manifold size and component quantities.

Tipo de accionamiento: Manual
Mecanismo de ajuste: Tornillo
Material del cuerpo: N/A
Tamaño de la cavidad: C10-2
Configuración: Aguja
Tamaño de conexión: N/A
Tipo de conexión: N/A
División: División de sistemas de válvulas hidráulicas
División: División de sistemas hidráulicos
Índice de eficiencia del filtro: ISO 4406 18/16/13, SAE Clase 4
Caudal: 16, 60
Caudal: 16 GAL/MIN, 60 L/MIN
Para tipo de fluido: Fluidos hidráulicos minerales o sintéticos
Función: 2 vías
Par de instalación: 37-41, 50-56
Tasa de fuga: 5 a 5000 PSI (345 BAR)
Caudal máximo: 16, 60
Presión nominal máxima de entrada: 5500, 380
Presión nominal máxima de entrada: 5500 PSI, 380 BAR
Viscosidad cinemática máxima: 45-2000 SSU (6 a 420 cSt)
Presión máxima de funcionamiento: 5500, 380
Temperatura máxima de funcionamiento: +200, +93
Temperatura mínima de funcionamiento: -35, -37
Tipo de aguja: gruesa
Temperatura de funcionamiento: -35 a +200, -37 a +93
Tipo de funcionamiento: Manual
Material del sello: Anillo en D (estándar)
Material de la válvula: Todas las piezas son de acero. Todas las piezas operativas son de acero endurecido
Peso: 0,4, 0,18