The OM VU1/2"V0610 is an inline check valve,also known as a Non-Return Valve,rated for 35 MPa pressure and 70 L/min nominal flow.Designed for road construction machinery,marine hydraulic systems,and mobile equipment,it provides G 1/2"BSPP ports and a cracking pressure of 0.4 to 0.7 bar.The valve ensures unidirectional flow control with minimal forward pressure drop.

　　What Is an Inline Check Valve(Non-Return Valve)?

　　An inline check valve is a directional flow device that permits fluid movement in one direction and blocks reverse flow automatically,preventing backflow damage in hydraulic circuits.Common designs include spring-loaded poppet,ball,and disc types,selected by cracking pressure,flow capacity,and mounting configuration.

　　The OM VU1/2"V0610 is a spring-loaded poppet-type inline check valve engineered for high-pressure hydraulic power transmission.It belongs to the VU series,offering a compact in-line body with low cracking resistance to reduce energy loss in continuous-duty mobile and industrial hydraulic systems.

　　Key Specifications

　　Rated Pressure:35 MPa

　　Rated Flow:70 L/min

　　Cracking Pressure:0.4 to 0.7 bar

　　Port Size:G 1/2"(BSPP)

　　Valve Type:Spring-loaded poppet check valve

　　Fluid Compatibility:Mineral oil-based hydraulic fluids(HL,HLP,HV per ISO 6743-4)

　　Seal Material:NBR(standard);FKM available upon request

　　Operating Temperature Range:-20°C to+100°C(typical for NBR seals)

　　Body Material:High-strength carbon steel with zinc-plated surface(per manufacturer datasheet;verify for specific model)

　　Mounting Position:Horizontal or vertical with upward flow;see installation guidance for vertical downward configurations

　　Approvals:Conforms to relevant ISO 1219-1 hydraulic circuit symbol and pressure equipment directives

　　Weight:Approx.0.2 kg(verify with datasheet)

　　Technical Highlights

　　Low cracking pressure preserves system efficiency.The 0.4 to 0.7 bar opening pressure reduces forward resistance,cutting energy consumption in load-sensing and constant-flow circuits.A common question during circuit design is whether such a low cracking pressure can reseat quickly;the spring-loaded poppet design achieves instant closure when downstream pressure exceeds upstream pressure,preventing reverse flow spikes.

　　High pressure rating supports demanding hydraulic circuits.Rated for 35 MPa,the valve operates reliably in heavy-duty construction machinery,crane hydraulics,and marine winch systems where pressure peaks are routine.

　　Compact in-line design simplifies piping.The G 1/2"BSPP threaded connections mount directly into tubing runs without extra adapters,reducing leak points and assembly time in mobile equipment.

　　Zinc-plated carbon steel body provides corrosion resistance in typical hydraulic environments.For saline or highly corrosive atmospheres,the optional FKM seals and consideration of a stainless-steel alternative are recommended.

　　Wide fluid compatibility broadens application scope.The valve handles standard hydraulic oils(HL,HLP,HV)as per ISO 6743-4,covering the majority of industrial hydraulic power units and mobile systems.For phosphate ester fluids,verify seal compatibility with the manufacturer.

　　Applications

　　Road construction machinery:Protects hydraulic pumps and actuators in excavators,graders,and pavers from reverse flow shock.Sustains 35 MPa system pressure while maintaining 70 L/min flow to slewing and travel circuits.

　　Marine hydraulic systems:Serves in steering gear,deck machinery,and hatch cover hydraulics.The cracking pressure of 0.4 bar supports low-speed,high-torque applications where start-up pressure peaks must be minimized.

　　Construction equipment hydraulics:Installed in hydraulic breakers,crushers,and compaction machines to prevent backflow-induced damage.The fast poppet reseating prevents actuator drift during hold phases.

　　Mobile hydraulic equipment:Fits in tail lifts,refuse compactors,and agricultural machines with compact hydraulic manifolds.The G 1/2"port easily integrates into standard metric tubing systems,reducing piping weight.

　　General industrial power units:Used in press hydraulics and material handling lifts to block return line backflow.The rated flow of 70 L/min matches typical small-to-medium power pack outputs.

　　Selection Guidance

　　Suitable for:Systems requiring a compact inline non-return valve with 35 MPa rating,70 L/min flow,and G 1/2"BSPP ports;applications where low cracking pressure(0.4 bar)is critical for energy efficiency;mobile and marine hydraulics using standard mineral oils and NBR seals within-20°C to+100°C.

　　Suitable for:Circuits where flow direction must be strictly maintained and backflow could damage pumps or cause actuator drift.The spring-loaded poppet provides reliable closure without external pilot signals.

　　Not recommended for:Applications requiring bidirectional flow control.This valve blocks reverse flow by design;if reversible flow is needed,consider a flow control valve or a piloted check valve with external pilot signal.

　　Not recommended for:Flow rates consistently exceeding 70 L/min.For higher demands,select a larger port size such as a 3/4"or 1"inline check valve to reduce pressure drop and avoid cavitation.

　　Not recommended for:Continuous operation with water-glycol fluids or phosphate esters unless FKM seals are specified and verified.The standard NBR seals may swell or degrade;always confirm fluid-seal compatibility with the technical datasheet before ordering.

　　FAQ

　　1.What is the cracking pressure and rated flow of the OM VU1/2"V0610?

　　The cracking pressure is 0.4 to 0.7 bar,and the rated flow is 70 L/min at 35 MPa.This combination provides low forward resistance for energy-efficient hydraulic circuits.

　　2.What are the port size and thread type of this inline check valve?

　　The OM VU1/2"V0610 features G 1/2"BSPP threaded ports.Both inlet and outlet connections follow the same thread standard,enabling direct integration into standard hydraulic tubing.

　　3.Can the VU1/2"V0610 be used in marine and mobile hydraulic systems?

　　Yes,the valve is designed for marine hydraulics and mobile equipment.Its 35 MPa rating and zinc-plated carbon steel body withstand vibration and pressure peaks in deck machinery,steering systems,and construction vehicles.

　　4.What is the delivery time or lead time for the OM VU1/2"check valve?

　　We dispatch stocked units within 24 hours of order confirmation.Standard factory lead time for backordered quantities is approximately 2 to 4 weeks,depending on production scheduling.

　　5.How much does the OM VU1/2"V0610 cost?What is the price range?

　　The unit price typically ranges from 85to150 USD per piece,varying with order quantity,shipping terms,and current raw material indices.Prices fluctuate due to exchange rates,tariffs,and factory adjustments.For an accurate quotation including freight and any applicable import duties,contact Beijing Zhongping Technology directly.

　　6.What payment terms do you accept for hydraulic valve purchases?

　　We accept bank wire transfer(T/T),Letter of Credit(L/C),and major trade platforms.For qualified corporate accounts,Beijing Zhongping Technology offers net 30 payment terms upon credit assessment and approval.

　　7.How do I install an inline check valve and what orientation is required?

　　Install the valve with the flow arrow on the body pointing in the desired flow direction.The valve functions in horizontal pipe runs and in vertical lines with upward flow.For vertical downward flow,consult our application engineers;Beijing Zhongping Technology provides installation guidance to ensure proper poppet seating.

　　8.Do you stock spare seals and service kits for the VU1/2"V0610?

　　We stock NBR seal kits and spare O-rings for the VU1/2"V0610.FKM seal kits and complete poppet assemblies are available upon request.Beijing Zhongping Technology ships spare parts within 1 to 3 business days from local inventory.

　　9.What is the return policy and warranty for OM non-return valves?

　　We provide a 2-year warranty against material and manufacturing defects.Returns require prior authorization with an issued RMA number;Beijing Zhongping Technology processes standard RMA requests within one business day of receipt and replaces or credits defective products per warranty terms.

　　10.What material and operating temperature range apply to the OM VU1/2"V0610?

　　The valve body is high-strength carbon steel with zinc-plated finish,and the standard seal material is NBR,suitable for-20°C to+100°C.For higher temperatures or aggressive fluids,specify FKM seals and confirm the full material specification with the manufacturer datasheet before ordering.