What is the maximum working pressure and temperature range for the Manual Lever Hydraulic Spool Valve YFM35?

Manual Lever Hydraulic Spool Valve YFM35 has a maximum working pressure of 315 bar. Its return (tank) pressure is up to 25 bar, and the operating temperature range is from -20°C to +80°C.

How does the built‑in type C safety valve preset to 140 bar enhance operator safety and system protection in the Manual Lever Hydraulic Spool Valve YFM35?

The built-in type C safety valve preset to 140 bar in the Manual Lever Hydraulic Spool Valve YFM35 protects both the operator and the hydraulic system by limiting maximum circuit pressure to a safe, controlled threshold. Key benefits: - Overpressure protection: The valve prevents pressure spikes that could damage hoses, seals, sliders, actuators or connected components by opening at 140 bar to dump excess flow, reducing risk of catastrophic failures. - Operator safety: By capping working pressure well below potential maximums, it lowers the chance of sudden component rupture or uncontrolled actuator motion, protecting personnel and nearby equipment. - System longevity: Regularly exposing components to excessive pressure accelerates wear; the preset relief reduces stress on the cast iron body, hardened steel sliders and NBR seals, extending service life and reducing downtime. - Predictable performance: A factory preset relief provides consistent, repeatable protection without field adjustment, simplifying maintenance and ensuring reliable behavior under heavy or erratic loads. - Complementary protection: With the YFM35’s maximum working pressure of 315 bar and return limits, the 140 bar valve offers localized safeguarding for specific circuits or functions where lower pressure is required, improving overall system control and safety. In short, the integrated 140 bar type C safety valve ensures safer operation, prevents component damage from overpressure, and contributes to reliable, long-lived performance of the Manual Lever Hydraulic Spool Valve YFM35.

Directional valve hydraulic spool, Controlled hand lever, type YFM35

All products, Directional control valves/

Additional information

Maximum operating temperature [°C]	80
Minimum operating temperature [°C]	-20

A monoblock Directional valve spool YFM35 Controlled hand lever of centering springs. intended for systems hydraulic cranes, lifts, machine construction, agricultural etc. standard equipped in valve safety type C (set on 140 bar) and spools type 1. Material: cast iron (body), steel hardened (spools). sealing: NBR. maximum Working pressure: 315 bar. maximum pressure return: 25 bar. Operating temperature: od -20°C up to +80°C.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
TL-YFM35-1-C-1	Directional valve hydraulic YFM35, 1-section with a valve overflow	-	315	In stock	Enquiry
TL-YFM35-2-C-11	Directional valve hydraulic YFM35, 2-section with a valve overflow	-	315	In stock	Enquiry
TL-YFM35-3-C-111	Directional valve hydraulic YFM35, 3-section with a valve overflow	-	315	In stock	Enquiry
TL-YFM35-4-C-1111	Directional valve hydraulic YFM35, 4-section with a valve overflow	-	315	In stock	Enquiry
TL-YFM35-5-C-11111	Directional valve hydraulic YFM35, 5-section with a valve overflow	-	315	In stock	Enquiry
TL-YFM35-6-C-111111	Directional valve hydraulic YFM35, 6-section with a valve overflow	-	315	In stock	Enquiry

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A monoblock Directional valve spool YFM35 Controlled hand lever of centering springs. intended for systems hydraulic cranes, lifts, machine construction, agricultural etc. standard equipped in valve safety type C (set on 140 bar) and spools type 1. Material: cast iron (body), steel hardened (spools). sealing: NBR. maximum Working pressure: 315 bar. maximum pressure return: 25 bar. Operating temperature: od -20°C up to +80°C.