What is the standard cracking pressure and available alternatives for the Throttling and check valve for hydraulic systems, type FPU?

Throttling and check valve for hydraulic systems, type FPU . standard cracking (opening) pressure is 0.5 bar. Available alternative cracking pressures: 2.5 bar, 5 bar and 10 bar. Additional key data: - Permissible flow direction: A â A1 (free), A1 â A (throttled, adjustable via knob) - Materials: body . carbon steel, galvanized; spring and stem . steel; knob . plastic - Sealing: NBR - Operating temperature: â20Â°C to +90Â°C

Can the Throttling and check valve for hydraulic systems, type FPU be installed in reverse to throttle A â A1 instead of A1 â A?

No - the Throttling and check valve for hydraulic systems, type FPU cannot be installed in reverse to throttle A â A1. Its design allows free flow only A â A1 and controlled (throttled) flow only A1 â A. Reversing it would prevent the intended free-flow/check function and could cause improper operation, increased pressure, leakage or damage. Install per specified flow direction.

How do I maintain the Throttling and check valve for hydraulic systems, type FPU to ensure reliable operation?

To maintain the Throttling and check valve for hydraulic systems, type FPU and ensure reliable operation, follow these steps: 1. Regular visual inspection - Check the body (carbon steel, galvanized) for corrosion, dents or coating damage. - Inspect the plastic knob for cracks or wear; ensure it turns smoothly. - Look for external leaks around seals and connections. 2. Functional check - Verify free flow from A â A1 without restriction. - Confirm throttled flow from A1 â A responds to knob adjustment; ensure smooth, consistent change. - Check opening pressure (standard 0.5 bar or installed variant 2.5/5/10 bar) by applying controlled pressure and observing valve response. 3. Cleaning - Depressurize and isolate the circuit before servicing. - Remove valve, flush housing and ports to remove debris and contamination that can damage NBR seals or obstruct flow. - Avoid aggressive solvents that can degrade NBR; use suitable hydraulic-compatible cleaners. 4. Seal and component inspection - Inspect NBR seals for swelling, hardening, cuts or permanent deformation; replace if any damage or leakage. - Check spring and stem for corrosion, wear or deformation; replace if weakened or damaged. - Ensure valve seat and bore are free from scoring or pitting. 5. Lubrication and reassembly - Use compatible hydraulic fluid or recommended light lubricant on moving parts; avoid oils that swell NBR. - Reassemble carefully, ensuring correct orientation (A â A1 free flow). - Tighten fittings to manufacturer torque recommendations. 6. Testing after maintenance - Repressurize system gradually, check for leaks and correct operation in both directions. - Confirm pressure settings and throttling behavior across the intended flow range and temperature limits (-20Â°C to +90Â°C). 7. Preventive measures - Install appropriate filtration to prevent particulate ingress. - Use hydraulic fluid compatible with NBR seals and system materials. - Avoid exceeding the valveâs rated pressures and temperature range. - Schedule periodic inspections based on operating hours and contamination risk. 8. Spare parts and records - Keep replacement NBR seals, springs, and knobs in stock. - Record maintenance actions, observed wear, and pressure settings for trend monitoring. Following these steps will help maintain the Throttling and check valve for hydraulic systems, type FPU in reliable working condition.

Valve throttle check for systems hydraulic, type FPU

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Additional information

Material	CS – steel (cast iron)

Valve throttle check type FPU used in systems hydraulic as element opening free Flow rate in one direction. Flow rate throttled in direction opposite adjustable is using a knob. standard pressure opening 0.5 bar (available also 2.5, 5 and 10 bar). permissible direction flow: A → A1 (free), A1 → A (throttled). Material: steel carbon, galvanized (body), steel (spring, stem), plastic (knob). sealing: NBR. Operating temperature: od -20°C up to +90°C.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
DC-FPU-04	Throttle check valve FPU 1/4" female	-	400	In stock	Enquiry
DC-FPU-06	Throttle check valve FPU 3/8" female	-	400	In stock	Enquiry
DC-FPU-08	Throttle check valve FPU 1/2" female	-	400	In stock	Enquiry
DC-FPU-12	Throttle check valve FPU 3/4" female	-	400	In stock	Enquiry

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Valve throttle check type FPU used in systems hydraulic as element opening free Flow rate in one direction. Flow rate throttled in direction opposite adjustable is using a knob. standard pressure opening 0.5 bar (available also 2.5, 5 and 10 bar). permissible direction flow: A → A1 (free), A1 → A (throttled). Material: steel carbon, galvanized (body), steel (spring, stem), plastic (knob). sealing: NBR. Operating temperature: od -20°C up to +90°C.