HydraForce RV5A RV5 Series Cartridge Relief Valve | RV5A-10 RV5-16 | Hydraulic Solenoid Valve

The RV5A and RV5 Series threaded cartridge-style pressure relief valves manufactured by Chengyuan Hydraulic are high-response, heavy-duty pressure control components engineered to match the historical performance standards of HydraForce industrial manifolds. This specialized aftermarket product group covers essential, high-demand cartridge models, including RV5A-10-F-0-35/30, RV5A-10-S-0-50, RV5-16-S-0-30, and RV5-16-C-0-60.

Serving as the reliable protective control line inside compact hydraulic manifolds, Chengyuan guarantees 100% original-place interchangeability regarding standardized cavity profiles (complying perfectly with VC10-2 and VC16-2 common cavities), sealing step dimensions, mechanical adjustment travel, and fluid damping characteristics. Every individual valve is subjected to 100% simulated load testing under high-pressure conditions on digital test benches prior to delivery, ensuring stable pressure transitions, minimal override leakage, and peak adjusting sensitivity under intense cyclic shock loads.

Technical Specifications 

• Compatible Brand: HydraForce Standard Cartridge Valves

• Core Model Codes: RV5A-10, RV5A-10-F, RV5A-10-S, RV5-16-S, RV5-16-C

• Cavity Designations: Size 10 (VC10-2 Cavity) / Size 16 (VC16-2 Cavity)

• Maximum Flow Capacities:

  • 10 Sizes (RV5A-10): Up to 38 L/min (10 USgpm)

  • 16 Sizes (RV5-16): Up to 132 L/min (35 USgpm)

• Maximum Operating Pressure: 350 bar (35 MPa / 5000 psi)

• Adjustment Mechanisms: F – Flexible Toolless Handknob / S – Internal Hex Screw / C – Hex Screw with Protective Cap

• Pre-set Pressure Settings: e.g., 35/30 denotes a pre-set pressure of 3500 psi (241 bar) with stable control operating over 3000 psi

• Maximum Internal Leakage: $\le 5$ drops/minute (less than 0.25 $cc/min$) at $85\%$ of cracked pressure setting

• Fluid Operating Temperatures: -40°C to +120°C (equipped with heavy-duty FKM Viton seals as standard)

Key Technical Advantages:

• Low-Hysteresis Conical Poppet Geometry: Employs a classic guided-poppet design contacting a sharp, line-contact seating area. When circuit pressure breaches the pre-set limit, the poppet responds via micron-level linear displacement. This holds pressure override and mechanical hysteresis strictly under 3%, preventing system hammer and severe pipeline resonance.

• Vacuum-Harden Alloy Steel Elements: The internal poppet and sliding sleeve function as a high-precision matching pair, forged from premium alloy steel (20CrMnTi) and subjected to vacuum carburizing and cryogenic tempering. The resulting surface hardness of HRC 60-62 delivers exceptional resilience against fluid cavitation erosion and hard particulate scouring.

• Dual-Stage Fatigue-Resistant Springs: Outfitted with robust rectangular wire springs that have passed rigorous 1-million-cycle stress testing. Even under high-frequency relief cycles and extreme fluid temperature spikes, spring rate degradation is completely eliminated, solving the common problem of pressure “drift” seen in cheap alternative brands.

• Precision-Rolled Thread Profiling: Outer cartridge locking threads (such as 7/8-14 UNF or 1-5/16-12 UN) are fabricated through cold thread-rolling processes rather than common lathed cutting. This drastically increases tensile and shear limits, ensuring the valve sleeve resists structural distortion or binding during continuous high-torque installations into steel manifolds.

Application Areas:

• Mobile Construction Machinery: Delivering secondary overload clipping and anti-cavitation cushioning in hydraulic circuits for rotary drilling rigs and aerial work platforms.

• Custom Industrial Manifolds: System pressure management for compact electric stackers, mini scrap balers, and refuse compactor trucks.

• Servo Hydraulic Units: Acting as a high-precision safety relief loop for specialized circuits requiring ultra-stable pressure slope profiles.

Expert Maintenance Tips:

• Mandatory Cavity Decontamination: Before screwing in a replacement valve, thoroughly flush the internal VC10-2 or VC16-2 manifold cavity with a high-pressure solvent cleaner and dry with a lint-free cloth. Residual metal slivers or abrasive dust will easily lodge in the precise poppet interface, causing instant pressure loss.

• Strict Adherence to Torque Ratings: Always employ a calibrated torque wrench during final manifold integration. Size 10 cartridges require a fastening torque of 34-41 Nm, while Size 16 cartridges demand 102-115 Nm. Never over-tighten the hex base, as excessive stress deform the outer sleeve and lock up the internal poppet mechanism.

• Prevent Viton O-Ring Twisting: Liberally lubricate the external O-rings and backup rings with clean hydraulic oil before assembly. Thread the valve in smoothly by hand; never force it blindly past internal oil-port intersections, which feature sharp cross-drilled edges that can easily score or slice raw rubber components.