SJ ZJ40 Truck-mounted Drilling Rig Three Bank Valve Lines (Z07060300002AA)

Core Purpose & Equipment Adaptation

This document is exclusively tailored for the Three Bank Valve Lines (Model: Z07060300002AA), a key hydraulic control component specially designed and matched for the SJ ZJ40 Truck-mounted Drilling Rig. It addresses the segmented needs of drilling engineering teams, on-site maintenance technicians, procurement specialists, and equipment managers who are responsible for the operation, daily upkeep, fault handling, and part replacement of the SJ ZJ40 truck-mounted drilling rig’s hydraulic system. As the “control hub” of the drilling rig’s hydraulic system, the three bank valve lines are mainly used to integrate, distribute, and regulate hydraulic oil flow and pressure, controlling the smooth operation of key drilling components such as the derrick, winch, and mud pump. This document provides comprehensive, practical guidance on product functions, structural features, applicable working conditions, maintenance, and procurement, helping users avoid equipment downtime, safety risks, and cost losses caused by improper use, inadequate maintenance, or mismatched parts—while ensuring the drilling rig operates continuously, efficiently, and safely.

Product Introduction

The Three Bank Valve Lines (Z07060300002AA) is a customized integrated hydraulic control assembly developed specifically for the SJ ZJ40 Truck-mounted Drilling Rig, complying with API 6D (Petroleum and Natural Gas Industries—Pipeline Valves) and SAE J517 (Hydraulic Hose and Hose Assemblies) standards. It integrates multi-way control valves, pipelines, connectors, and supporting components into a compact, modular structure, perfectly adapting to the limited installation space of the SJ ZJ40 truck-mounted drilling rig. The entire assembly is made of high-strength, corrosion-resistant materials: the main valve body and pipelines use precision-processed carbon steel and alloy steel, while the hoses and sealing components adopt oil-resistant, wear-resistant, and anti-aging materials. All matching parts (including supports, fittings, bushings, and fasteners) are custom-manufactured to ensure 100% compatibility with the main valve lines, avoiding leaks, blockages, or control failures caused by mismatched components. This product is designed to withstand the harsh working environment of mobile drilling, providing stable, reliable hydraulic control for long-term, high-load operations.

Function Description

The SJ ZJ40 Three Bank Valve Lines (Z07060300002AA) serves as the core control center of the drilling rig’s hydraulic system, with the following key functions that directly affect the overall operation of the drilling rig: First, hydraulic oil distribution and regulation: It receives high-pressure hydraulic oil from the drilling rig’s hydraulic pump, distributes it to different hydraulic actuators (such as cylinders and motors) according to operational needs, and precisely regulates oil flow and pressure to control the speed and force of each component’s movement. Second, multi-way independent control: Equipped with multiple independent control valves (integrated into the three bank structure), it can control the operation of multiple drilling components (derrick lifting, winch rotation, mud pump start-stop) simultaneously without mutual interference, improving drilling efficiency. Third, pressure protection: The integrated structure is designed with pressure relief and anti-overload functions, which can automatically adjust or cut off oil flow when the hydraulic system pressure exceeds the rated value, preventing damage to the valve lines, hoses, and other hydraulic components. Fourth, pipeline connection and sealing: It connects the hydraulic pump, actuators, and auxiliary components into a closed hydraulic circuit through matching hoses, steel pipes, fittings, and bushings, ensuring tight sealing and smooth oil flow—avoiding leaks that would reduce system pressure and affect operation. Fifth, easy operation and control: Equipped with ergonomically designed handle assemblies, it allows on-site operators to quickly and accurately control the on-off, flow, and direction of hydraulic oil, adapting to the fast-paced, high-intensity needs of drilling operations. Sixth, equipment protection: The integrated dust-proof, anti-collision components (such as covers and supports) protect the valve lines and internal components from damage caused by drilling debris, vibration, and harsh outdoor conditions.

Structural Characteristics

The SJ ZJ40 Three Bank Valve Lines (Z07060300002AA) adopts a scientific, modular structural design that balances compactness, durability, operability, and maintainability—with the following key features: 1. Integrated three-bank valve structure: The core control valves are integrated into a three-bank modular design, reducing the overall volume and occupied space, which is perfectly adapted to the limited installation area of the SJ ZJ40 truck-mounted drilling rig. The modular design also facilitates disassembly, maintenance, and part replacement. 2. High-strength pipeline system: The pipeline system includes precision steel pipes (32mm and 25mm) and high-pressure hose assemblies of various specifications, made of high-strength carbon steel and wear-resistant synthetic rubber respectively. The steel pipes undergo precision honing and anti-corrosion treatment, while the hoses are reinforced with multi-layer steel wire braids—ensuring pressure resistance (rated pressure ≥ 31.5MPa) and long service life. 3. Reliable connection and sealing structure: All connections adopt standard NPT threads and matching fittings, bushings, and quick couplings, complying with ANSI/ASME B1.20.1 (Pipe Threads, General Purpose) standards. The assembly uses high-quality copper washers, O-rings, and sealing components to achieve multi-layer sealing, effectively preventing hydraulic oil leaks and external dust/impurities from entering the pipeline. 4. Stable supporting structure: Equipped with multiple customized supports (such as P2200279AA, Z07060700003AA) and pipe clamps, it firmly fixes the valve lines, hoses, and steel pipes to the drilling rig body—reducing vibration during road transportation and drilling operations, avoiding pipeline displacement and friction damage. 5. User-friendly operation structure: The handle assemblies (Z07060700002AA, P6001580AA) are installed in an ergonomic position, with a comfortable grip and smooth operation—allowing operators to control hydraulic flow and direction with minimal effort, reducing operational fatigue during long working hours. 6. Easy maintenance structure: The valve covers, handle frames, and connection components adopt bolted or pinned connections, which can be quickly disassembled without special tools. The gauge bushing (QBJ10130214) and quick couplings (4700600247, 4700600246) are reasonably arranged, facilitating on-site pressure detection, oil circuit inspection, and part replacement. 7. Anti-damage protection structure: The integrated cover (P2000438AA) and supports protect the core valve components from collision, dust, and moisture, while the pad eyes (P2200276AA) and fixed slips (P7200163AA) enhance the overall structural stability and safety.

Applicable Working Conditions

The SJ ZJ40 Three Bank Valve Lines (Z07060300002AA) is specially designed for the mobile, harsh working environment of the SJ ZJ40 truck-mounted drilling rig, with strong environmental adaptability and wide applicability to the following working conditions: 1. Mobile drilling sites: It is fully adapted to the on-road transportation and on-site transfer characteristics of the SJ ZJ40 truck-mounted drilling rig, capable of withstanding severe vibration, impact, and position changes during transportation—without pipeline loosening or leakage. 2. Onshore petroleum drilling environments: It can work normally in various onshore drilling sites, including deserts, grasslands, mountains, and plains, adapting to extreme temperature changes (-40℃ ~ +80℃), sandstorms, rain, and high humidity. 3. High-load, long-term operation: It can withstand continuous high-pressure, high-load operation during drilling (8-12 hours per day, 5-6 days per week), with stable performance and no valve jamming, pipeline blockage, or leakage. 4. High-dust, high-impact conditions: The integrated protection structure and dust-proof components (covers, dust rings) prevent drilling debris, sand, and other impurities from entering the valve lines and pipelines, avoiding component wear and blockage. 5. Variable-load operation: It can adapt to the variable hydraulic load during drilling operations (such as derrick lifting, winch rotation, and mud pump adjustment), with quick pressure and flow response—ensuring smooth, stable control of each drilling component. 6. Corrosive environments: The anti-corrosion treatment of the pipeline and valve body, as well as the corrosion-resistant materials of the connectors and sealing components, allow it to work normally in environments with slight chemical corrosion (such as drilling fluid splashing), avoiding component corrosion and failure.

Maintenance and Care Suggestions

To extend the service life of the SJ ZJ40 Three Bank Valve Lines (Z07060300002AA), reduce fault rates, and ensure safe, stable operation, on-site maintenance technicians should strictly implement the following practical maintenance and care suggestions: 1. Daily inspection (before each drilling operation): Check the entire valve line assembly for oil leaks—focusing on connections, fittings, bushings, and hose joints; inspect the handle assemblies for flexibility (no jamming or looseness); check the supports and pipe clamps for tightness (re-tighten if loose); clean the valve body and pipeline surface to remove dust, debris, and drilling fluid residues; check the gauge bushing and pressure gauge for normal operation. 2. Regular pipeline inspection (weekly): Inspect all steel pipes and hoses for damage—such as scratches, bulges, cracks, or wear; check the hose connections for looseness (re-tighten if needed); replace any hose with obvious wear or cracks immediately to avoid bursting under high pressure. 3. Hydraulic oil maintenance (monthly): Check the hydraulic oil level and cleanliness—replace the hydraulic oil every 6 months (or 1000 working hours) with No. 46 anti-wear hydraulic oil that meets GB/T 11118.1-2011 standards; regularly clean the hydraulic oil filter to prevent impurities from entering the valve lines and blocking the valves or pipelines. 4. Sealing component maintenance (monthly): Check the copper washers, O-rings, and other sealing components for aging, cracking, or deformation—replace them immediately if damaged; apply a small amount of anti-rust grease to the thread connections to enhance sealing and prevent corrosion. 5. Valve and handle maintenance (monthly): Inject a small amount of lubricating grease into the handle rotating parts to ensure flexible operation; check the valve core for jamming—if jamming occurs, disassemble and clean the valve body (avoid using harsh chemicals that may damage the valve core). 6. Transportation and storage maintenance: Before road transportation, check and tighten all supports, pipe clamps, and connections to avoid pipeline displacement and damage; after transportation, re-inspect the entire assembly for leaks or damage; when the drilling rig is shut down for more than 1 month, clean the valve lines and pipelines, drain the hydraulic oil (or keep it filled to prevent corrosion), cover the valve body and connectors with a protective cover, and store the drilling rig in a dry, ventilated place. 7. Fault prevention: Avoid overloading the hydraulic system (do not exceed the rated pressure); do not use mismatched parts (such as non-original fittings, bushings, or hoses); train operators to use the handle assemblies correctly (avoid violent operation that may damage the valve core or handles).

On-site Fault Maintenance Cases

The following are 4 real, short on-site fault maintenance cases of the SJ ZJ40 Three Bank Valve Lines (Z07060300002AA), providing practical reference for maintenance technicians to quickly troubleshoot and resolve problems on site:

Case 1: Hydraulic Oil Leakage at Bushing Connections

Fault Phenomenon: During drilling operations, hydraulic oil was found leaking from the connection of the NPT3/8”X1/4” bushing (QBJ10010302), leading to reduced system pressure and slow operation of the drilling rig’s winch. Fault Cause: On-site inspection found that the bushing thread was worn due to frequent disassembly during previous maintenance, and the copper washer (4317000208) was deformed—resulting in poor sealing. Maintenance Method: Stop the equipment, release the hydraulic pressure, remove the worn bushing and deformed copper washer, replace them with original matching parts (QBJ10010302 bushing and 4317000208 copper washer), apply thread sealant to the bushing thread, and tighten it to the specified torque. Test Operation: After maintenance, the oil leakage stopped, system pressure returned to normal, and the winch operated smoothly.

Case 2: Valve Handle Jamming and Unresponsive Control

Fault Phenomenon: The handle assembly (Z07060700002AA) of the three bank valve lines became stuck and unresponsive when attempting to control the derrick lifting, making it impossible to adjust the derrick position. Fault Cause: Inspection found that dust and drilling fluid residues had accumulated in the handle rotating parts, and the lubricating grease had dried up—causing increased friction and jamming. Additionally, the pinshaft (P2000217AA) connecting the handle to the valve core was slightly bent. Maintenance Method: Disassemble the handle assembly, clean the rotating parts and pinshaft with clean hydraulic oil, straighten the bent pinshaft (or replace it if severely damaged), apply new lubricating grease, and reassemble the handle. Test Operation: The handle operated flexibly after maintenance, and the derrick lifting control returned to normal, with quick response to handle adjustments.

Case 3: High-Pressure Hose Burst During Operation

Fault Phenomenon: During high-load drilling operations, the Hose Assembly 32Ⅱ-1100 (1101020062) suddenly burst, causing a large amount of hydraulic oil leakage and forcing the drilling operation to stop. Fault Cause: Inspection revealed that the hose outer cover was severely worn due to long-term friction with the drilling rig body (the pipe clamp had loosened and fallen off), and the steel wire reinforcement inside the hose was fatigued and broken—unable to withstand the system’s high pressure. Maintenance Method: Replace the burst hose with an original matching Hose Assembly 32Ⅱ-1100 (1101020062), reinstall and tighten the pipe clamp (QBJ11041055) to fix the hose, and check other hoses for wear (replace if necessary). Test Operation: The hydraulic system operated normally after replacement, with no leaks, and the hose remained stable during high-pressure operation.

Case 4: System Pressure Instability and Component Misoperation

Fault Phenomenon: The hydraulic system pressure of the three bank valve lines was unstable (fluctuating significantly), and the drilling rig’s mud pump and winch occasionally operated abnormally (uncontrolled start-stop or speed changes). Fault Cause: Inspection found that the M39X2-NPT1” fitting (QBJ6033908) was loose due to transportation vibration, causing air to enter the hydraulic circuit; additionally, the hydraulic oil was contaminated with impurities, blocking the valve core and affecting oil flow regulation. Maintenance Method: Tighten the loose fitting (QBJ6033908) and discharge the air from the circuit using the air exhaust plug; replace the contaminated hydraulic oil and clean the hydraulic oil filter; disassemble and clean the valve core to remove impurities. Test Operation: System pressure stabilized after maintenance, and all drilling components operated normally without misoperation.

FAQ (Frequently Asked Questions)

Procurement Guide

The Three Bank Valve Lines (Z07060300002AA) and its matching components are critical to the safe, efficient operation of the SJ ZJ40 Truck-mounted Drilling Rig—any failure or mismatch can lead to costly downtime, equipment damage, and safety risks. To ensure the reliability and longevity of your drilling rig’s hydraulic system, we recommend purchasing only high-quality, original-matching products that comply with API 6D, SAE J517, and ANSI/ASME standards. All products referenced in this document are custom-manufactured for the SJ ZJ40 Truck-mounted Drilling Rig, using high-strength, corrosion-resistant materials and precision processing—ensuring perfect compatibility, tight sealing, and stable performance in harsh drilling environments. Whether you need to purchase the complete three bank valve lines assembly, replace wearing parts (hoses, fittings, bushings, sealing components), or reserve spare parts for daily maintenance and emergency repairs, we provide comprehensive support and professional technical guidance. Our products undergo strict quality inspections and pressure tests before leaving the factory, and we offer detailed product specifications and maintenance instructions to help you reduce maintenance costs and extend equipment service life. Please select the required parts according to the specified model and part name, and contact us to complete your procurement. We are committed to providing you with reliable products, reasonable prices, and thoughtful service—helping you keep your SJ ZJ40 truck-mounted drilling rig operating continuously and efficiently.

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