4/3-Way Hydraulic Hand Lever Valve Section Tandem Center 320bar
4/3-way hand lever section for modular hydraulic control blocks, up to 320 bar. For double-acting cylinders and hydraulic motors. In neutral, ports A and B are blocked and the pump flow returns pressureless to tank through the neutral bypass channel (tandem centre). The lever springs back to neutral. A and B ports G3/8, nominal flow up to 50 l/min. NBR seals, for mineral-oil hydraulics from -30 to +90 °C.
- Regular price
- £148.81
Description
Move the lever 13° either way to drive the cylinder or motor in one direction or the other. Let go and it springs back to neutral: A and B are blocked and the actuator holds its position. A neutral bypass channel runs through every section. In neutral it is open, so the pump flow passes on to the next section and back to tank without pressure, which suits a gear pump. Order the inlet section, outlet section and matching tie rod set separately. For an actuator that must float in neutral, choose the section with A and B open.
Pros:
- Actuator stops and holds its position in neutral (A and B blocked)
- Pressureless circulation in neutral, suits gear pumps
- Spring return to neutral, detent kits available
- Up to nine sections in one control block
Cons:
- Needs an inlet section, an outlet section and a tie rod set - order them separately
- Nominal flow falls as sections are added: 45 l/min from 3, 35 l/min with 8 or 9 sections
Series:
Modular hydraulic hand lever valves for mobile and industrial machines. A control block is built from an inlet section with an adjustable pressure relief valve (40 to 320 bar), one to nine hand lever sections and an outlet section, clamped together with the tie rod set for that number of sections. Lever sections are double-acting with A and B blocked or open to tank in neutral, or single-acting with A blocked. In neutral, the pump flow returns pressureless to tank through a neutral bypass channel. The levers spring back to neutral as standard; detent kits hold them in position 1, 2 or both. An optional kit gives closed centre for a variable displacement pump, or power beyond to a second block. P and T ports G1/2, A and B ports G3/8. Inlet pressure up to 320 bar, return pressure max 35 bar. Nominal flow 50 l/min for blocks with 1 or 2 lever sections, 45 l/min for 3 to 5, 40 l/min for 6 or 7 and 35 l/min for 8 or 9. Steel and plastic bodies, NBR seals, for mineral oil of 10 to 300 mm²/s from -30 to +90 °C. Also known as sectional control valves.