Relief Check Hydraulic Valve
Proportional Flow & Pressure Control – Relief Check Hydraulic Valve PV70‑30B Hydraulic systems in cranes, construction machinery, agricultural equipment, and aerospace require precise flow control and reliable pressure regulation. A poorly controlled valve can cause unstable actuator speeds, pressure fluctuations, or system inefficiency. The relief check hydraulic valve from Flying Bull (Model PV70‑30B) is a proportional regulating flow control valve that combines relief and check functions. It operates with oil as the medium. The valve is 100% brand new, manufactured in Zhejiang, China, and backed by a 1‑year warranty. Delivery takes 5–7 working days. Product overview – what this valve does This product is a proportional regulating flow control valve (overflow one‑way hydraulic valve), categorized under solenoid valves. The brand is FLYING BULL, and all units are supplied as 100% brand‑new and genuine, sourced directly from the original factory. Designed to operate with oil as the medium, it serves as a key control component in hydraulic systems, meeting wholesalers’ procurement needs for flow and pressure control accessories. It can function as a balance valve, safety valve, or unloading valve. Operating pressure The valve is designed for standard pressure operation, making it compatible with the normal pressure conditions of most hydraulic systems. It can be directly installed and used without requiring additional pressure adjustments, offering broad applicability. This simplifies integration for customers and supports stable hydraulic system performance. Key performance advantages 1. Strong stability – Maintains consistent hydraulic system pressure by regulating flow, preventing output pressure fluctuations caused by external variations (load changes, temperature shifts, pump pulsations). 2. High reliability – Features a simple and robust mechanism, stable operation, strong resistance to external influences (vibration, contamination, temperature swings), and an extended service life. 3. Easy maintenance – Components such as the coil, spring, and main flow switch offer high corrosion resistance and are straightforward to maintain or replace, supporting long‑term efficient operation. 4. Precise control – Equipped with precision sensors for high control response accuracy and minimal error. The next‑generation flow controller ensures reliable flow accuracy with minimal impact from system pressure variations, improving overall equipment reliability. 5. Energy efficiency and environmental friendliness – The advanced controller enhances flow precision, reduces unnecessary flow cycles in machinery, significantly saves energy, and supports sustainable, low‑emission operation. Application scenarios Widely used across industries including: Cranes and lifting equipment – Load holding and controlled lowering. Construction machinery – Excavators, loaders, dozers. Agricultural equipment – Tractors, harvesters, sprayers. Shipbuilding – Deck machinery, steering systems. Aerospace – Hydraulic actuation systems. Metallurgy – Presses, rolling mills, forging equipment. Why choose Flying Bull for the relief check hydraulic valve PV70‑30B? Proportional control – Precise flow and pressure regulation. Multi‑function – Balance, safety, or unloading valve. Energy efficient – Reduces unnecessary flow cycles. 100% brand new – Not rebuilt or refurbished. 1‑year warranty – Against manufacturing defects. Fast delivery – 5‑7 working days from Zhejiang, China. Flying Bull’s relief check hydraulic valve (PV70‑30B) is a reliable, high‑quality component for hydraulic systems requiring precise proportional control. Choose Flying Bull for efficient, stable flow and pressure management.
Product Introduction
Products Description
I. Type & Basic Specifications
This product is a proportional regulating flow control valve (overflow one-way hydraulic valve), categorized under solenoid valves. The brand is FLYING BULL, and all units are supplied as 100% brand-new and genuine, sourced directly from the original factory. Designed to operate with oil as the medium, it serves as a key control component in hydraulic systems, meeting wholesalers' procurement needs for flow and pressure control accessories.
II. Operating Pressure
The valve is designed for standard pressure operation, making it compatible with the normal pressure conditions of most hydraulic systems. It can be directly installed and used without requiring additional pressure adjustments, offering broad applicability. This simplifies integration for customers and supports stable hydraulic system performance.
III. Key Performance Advantages
Strong Stability: Maintains consistent hydraulic system pressure by regulating flow, preventing output pressure fluctuations caused by external variations.
High Reliability: Features a simple and robust mechanism, stable operation, strong resistance to external influences, and an extended service life.
Easy Maintenance: Components such as the coil, spring, and main flow switch offer high corrosion resistance and are straightforward to maintain or replace, supporting long-term efficient operation.
Precise Control: Equipped with precision sensors for high control response accuracy and minimal error. The next-generation flow controller ensures reliable flow accuracy with minimal impact from system pressure variations, improving overall equipment reliability.
Energy Efficiency & Environmental Friendliness: The advanced controller enhances flow precision, reduces unnecessary flow cycles in machinery, significantly saves energy, and supports sustainable, low-emission operation.
IV. Application Scenarios
Widely used across industries including cranes, construction machinery, agricultural equipment, shipbuilding, aerospace, and metallurgy. The valve can function as a balance valve, safety valve, or unloading valve, meeting wholesalers' supply needs for customers in diverse fields.
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OE NO.: PV70-30B
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Media: Oil |
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Warranty: 1 YEAR |
Condition:New, 100% Brand-new |
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Place of Origin:Zhejiang, China |
ltem:Solenoid |
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Brand Name:FLYING BULL |
Quality:High-Quality |
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Delivery:5-7 Working Days |
Pressure:Ordinary Pressure |
Company Introduction
Frequently Asked Questions (FAQ)
1. What is the core type and applicable medium of the FLYING BULL relief check hydraulic valve (Model: PV70‑30B)?
This product is a proportionally regulated flow control valve (also categorized as a relief check hydraulic valve) under the solenoid component category. It is 100% brand‑new, branded FLYING BULL, and designed to work with oil as the medium. It serves as a key control part for hydraulic systems, making it ideal for your bulk supply to hydraulic system maintenance providers or equipment manufacturers.
2. What working pressure condition is this valve suitable for, and does it require extra pressure adjustment?
It is engineered for ordinary pressure working conditions, which matches the conventional pressure requirements of most hydraulic systems. No additional pressure adaptation or modification is needed – it can be directly installed and used, reducing the application threshold for your customers.
3. What core performance advantages does this relief check hydraulic valve have?
Its key advantages include:
Strong stability – Stabilizes hydraulic system pressure by controlling flow, ensuring no pressure fluctuations due to external changes.
High reliability – Simple structure, stable operation, less affected by external factors, and longer service life.
Easy maintenance – Components like coils, springs, and main flow switches have high corrosion resistance, enabling simple maintenance and long‑term efficient operation.
Precise control – Equipped with precision sensors for high response accuracy and small errors; adopts a new‑generation flow controller for stable flow accuracy (less affected by system pressure).
Energy efficiency – The new controller reduces unnecessary flow operation of machinery, saving energy and meeting energy‑saving and emission‑reduction requirements.
4. Which industries and scenarios is this valve applicable to?
It is widely used in industries including crane, construction machinery, agricultural machinery, shipbuilding, aerospace, and metallurgy. It can function as a balance valve, safety valve, or unloading valve, making it suitable for your bulk supply to customers across multiple sectors.
5. What is the warranty period for this valve, and what does it cover?
The 100% brand‑new product comes with a 1‑year warranty. The warranty covers manufacturing defects that affect normal operation, such as flow control failure due to substandard internal components or leakage caused by poor sealing. If such issues occur within the warranty period, we provide replacement or technical support.
6. What is the standard delivery time for bulk orders, and is expedited delivery available?
The standard delivery cycle for bulk orders is 5‑7 working days. For urgent needs, please contact our 24‑hour sales team. We will adjust production and logistics to provide customized expedited solutions.
7. As a wholesaler, can we get factory‑direct pricing, and is there flexibility in MOQ?
We offer factory‑outlet pricing exclusively for wholesalers to ensure your market competitiveness. Regarding the Minimum Order Quantity (MOQ), we provide flexible terms based on your long‑term cooperation plans and immediate needs. Please consult our sales team for the most suitable MOQ.
8. Does FLYING BULL provide customization services for this valve, and what can be customized?
Yes, we offer custom service for this valve. Customization mainly focuses on adapting to specific equipment (e.g., cranes, agricultural machinery) by adjusting parameters to match the unique requirements of your customers' hydraulic systems. Please share detailed needs with our team for a tailored plan.
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