02 Mar 2026

Full Opening Safety Valve 3-1/2″ IF, YZ311.00 Disc Brake HPU Hose Assembly, ZJ70D Socket

Introduction: Precision-Matched Components for Oilfield Rigs, BOPs & Industrial Equipment

We specialize in manufacturing and supplying high-performance mechanical parts that are fully compatible with a wide range of oilfield, drilling, and industrial equipment models. Our product portfolio is tailored to fit ZJ45, ZJ70D, ZJ70DB drilling rigs, JZ400, JZG34B series equipment, Inside BOP 4-1/2″ IF, YZ311.00 disc brake HPU, KB-25 pulsation dampeners, WNS2-1.25-Y boilers, 3512 machines, R009D-1 froth pumps, and various hydraulic, transmission, and control systems. From full opening safety valves and disc brake hoses to bearings, gaskets, and electrical components, every part is engineered to meet the rigorous operational demands of oilfield drilling, well control, industrial production, and heavy machinery maintenance.

Our target users include oilfield drilling companies, well control service providers, drilling rig maintenance teams, industrial plant equipment departments, and heavy machinery repair workshops. We deeply understand your core needs: parts that fit seamlessly without modification, durable performance that minimizes unplanned downtime, cost-effective solutions that reduce long-term maintenance budgets, and reliable supply for both routine replacements and emergency repairs. Whether you need a single retaining ring (P1000205AA) or a complete oil pump gear assembly (P/N CS33001-0620A00), we deliver one-stop supply solutions that balance OEM-level quality, perfect compatibility, and competitive pricing—helping you keep your equipment running efficiently and safely.

Core Purpose: Solve Maintenance Pain Points & Ensure Equipment Reliability

The mechanical parts we supply are critical to the safety, performance, and longevity of your oilfield and industrial equipment. Our core mission is to address the most frustrating challenges you face in daily operations: mismatched parts causing costly installation delays, low-quality components leading to frequent breakdowns, exorbitant OEM part costs, and difficulty sourcing hard-to-find specialized components (such as YZ311.00 disc brake hoses and KB-25 pulsation dampener parts). By providing ISO/API/GB-compliant, high-compatibility parts—such as the Full Opening Safety Valve 3-1/2″ IF BOX × 3-1/2″ IF PIN 5000PSI, YZ311.00 Disc Brake HPU Hose Assembly (P/N: 16 I-1200JM26X1.5C), and ZJ70D Socket Φ16GB5646-85—we help you cut unplanned downtime, reduce maintenance costs, and ensure your equipment operates stably in long-term, high-intensity, and high-pressure working environments. Our parts are designed to not just replace old components, but to enhance equipment performance and extend service life.

Product Introduction

Our product range covers 7 major categories, all manufactured in strict compliance with international industry standards (ISO 9001, API 6A, GB/T) to guarantee compatibility, durability, and performance. Key products include:

 Oilfield Safety & Well Control Parts: Full Opening Safety Valve 3-1/2″ IF BOX × 3-1/2″ IF PIN 5000PSI, Full Opening Safety Valve 3-1/2″ EUE BOX × 3-1/2″ EUE PIN 5000 PSI, Full Opening Safety Valve 6-5/8″ Reg P/B, Inside BOP 4-1/2″ IF BOX × 4-1/2″ IF PIN, High-Pressure Hose 140507021602000000.

 Disc Brake HPU Components: Rubber Hose Assembly for YZ311.00 Disc Brake HPU (P/N: 16 I-1200JM26X1.5C, 16 I-500JM26X1.5C, 10 I-1200JM16X1.5C, 10 I-2000JM16X1.5C, 10 I-1400JM16X1.5C, 19 I-1200JM36X2D, 19 I-1300JM36X2D, 13 I-1400JM22X1.5C, 13 I-1200JM22X1.5C).

 Pulsation Dampener Parts (KB-25 Model): Capsule (P/N: LW-AB25-04.02), 1/4″ Connect (P/N: LW-AB25-04.06), 1/4″ Tee Joint (P/N: LW-AB25-04.07), Angle Stop Valve (P/N: LW-AB25-04.08), 0-25MPa Pressure Gauge (P/N: LW-AB25-04.09).

 Drilling Rig & Industrial Equipment Components: Clamp 35 JZ400.1-8D, Pressure Block JZ400.1-7, Expansion Ring JZ400.1-5, Oil Seal JZ400.1-6, Shaft JZG34B-4, ZJ70D Socket Φ16GB5646-85, ZJ45 Countersunk Screw 241.35.96.57 10×45, Rig Chain 8 44.45mm RS140-8, Weight Gauge JZ Flange Double Scale Seismic Gauge YK-150 60MPa.

 Sealing & Fastening Parts: Wedged Lock Washer M24 HLS-24, Retaining Ring P1000205AA, O-Ring 530301011650070007, LMD O-Ring AS-220 Viton 381611 GE, S30078HS1 Seal, Cylinder Head Gasket 2W7984, Hexagon Head Bolts Fine Pitch Full Thread DQ70BSC 4202001890 M24×2×90 8.8class, Nut T53-2005, 3932-62 Nut Housing Jam.

 Filters, Pumps & Bearings: 3512 Machine Filter 1R-0726, Line Filter ZJ70DB SPX-06×25, Oil Pump Gear Assembly P/N CS33001-0620A00, Oil Pump 4W5479, R009D-1 Froth Pump Bearing, Bearing 430103002233000012, Bearing 6238 (610102-00-1148), Bushing BKD-3-6D3, Hydraulic Motor 512601040210030000.

 Electrical & Auxiliary Parts: 972-0BA41-0XA0 9-Pin Plug (RS485), Rubber Sheathed Power Cable YCW 3*1mm2 075kV, Light Bulb 0405-0022-00 3W 28V West, Boiler WNS2-1.25-Y Large Switch R30, Airbag 515876, Suction Flange AH1001010525, Faucet Flush Pipe SL-250, Exhaust Valve 5S5918.

Function Description

Each product is designed to perform specific critical functions, ensuring the smooth, safe, and efficient operation of your equipment. Here’s how our key parts work:

 Full Opening Safety Valves (3-1/2″ IF, 3-1/2″ EUE, 6-5/8″ Reg P/B): Installed in oilfield wellheads and pipelines, these valves automatically open to release excess pressure (up to 5000PSI) when pressure exceeds the safe limit, protecting well control equipment and pipelines from overpressure damage and ensuring operational safety.

 YZ311.00 Disc Brake HPU Hose Assemblies: Transmit hydraulic fluid between the disc brake hydraulic power unit (HPU) and brake calipers of drilling rigs, enabling smooth and reliable braking performance, which is critical for controlling drilling rig operations and ensuring worker safety.

 Inside BOP 4-1/2″ IF BOX × 4-1/2″ IF PIN: Serves as a key component in well control systems, sealing the wellbore during drilling operations to prevent blowouts and ensure safe well construction.

 KB-25 Pulsation Dampener Parts: The capsule absorbs pressure fluctuations in hydraulic systems, while the connect, tee joint, angle stop valve, and pressure gauge work together to regulate and monitor system pressure, ensuring stable operation of the dampener.

 Filters & Bearings (1R-0726, 6238): The 3512 machine filter removes impurities from engine oil to protect internal components, while bearings (6238, R009D-1) reduce friction between moving parts, ensuring smooth rotation and extending equipment service life.

 Hydraulic Motor 512601040210030000 & Oil Pumps: Power hydraulic systems in drilling rigs and industrial equipment, providing stable hydraulic pressure to drive various components such as winches, drawworks, and brake systems.

Structural Features

Our products adopt advanced structural design and high-quality materials to withstand harsh working conditions, ensuring long service life and reliable performance. Key structural features include:

 Full Opening Safety Valve 3-1/2″ IF BOX × 3-1/2″ IF PIN 5000PSI: Made of high-strength alloy steel (compliant with API 6A standards), with a full-opening design for rapid pressure relief; IF (Internal Flush) thread connection ensures tight sealing and compatibility with standard oilfield wellhead components.

 YZ311.00 Disc Brake HPU Hose Assembly: Constructed with high-quality rubber inner tube, reinforced steel wire layer, and weather-resistant outer cover; precision-machined fittings (JM26X1.5C, JM16X1.5C) ensure leak-proof connection and resistance to high pressure and vibration.

 Inside BOP 4-1/2″ IF BOX × 4-1/2″ IF PIN: Features a rugged steel body with a precision sealing structure, designed to withstand high pressure and corrosive well fluids; IF thread design ensures easy installation and compatibility with drilling rig well control systems.

 LMD O-Ring AS-220 Viton 381611 GE: Made of high-temperature and oil-resistant Viton material, with precise dimensional control and excellent elasticity, ensuring tight sealing in high-pressure and high-temperature hydraulic systems.

 Bearing 6238 (610102-00-1148): High-precision rolling elements and raceways, strict dimensional tolerance control (compliant with ISO 3408), and excellent load-bearing capacity; suitable for high-speed and heavy-load operation in froth pumps and drilling rig components.

Applicable Working Conditions

Our products are widely used in various harsh and complex working environments, perfectly adapting to the needs of oilfield and industrial operations:

 Oilfield Drilling & Well Control Sites: Suitable for ZJ45, ZJ70D, ZJ70DB drilling rigs, Inside BOP 4-1/2″ IF, and wellhead systems; withstanding high temperature (up to 180℃), high pressure (up to 5000PSI), corrosive well fluids, dusty, and high-vibration environments.

 Disc Brake HPU Systems: Used in YZ311.00 disc brake hydraulic power units of drilling rigs; adapting to outdoor and high-vibration environments, with resistance to hydraulic oil corrosion and extreme weather.

 Industrial Manufacturing Plants: Applicable to WNS2-1.25-Y boilers, 3512 machines, R009D-1 froth pumps, and hydraulic systems; adapting to continuous operation, high-load, and high-temperature working conditions.

 Pulsation Dampener Systems: Used in KB-25 pulsation dampeners for hydraulic and fluid systems; suitable for industrial and oilfield applications, withstanding pressure fluctuations and ensuring stable system operation.

Maintenance & Care Suggestions

Proper maintenance is key to extending the service life of mechanical parts and reducing replacement costs. Here are practical, easy-to-follow suggestions tailored to our products:

 Regular Inspection: Check safety valves (3-1/2″ IF, 3-1/2″ EUE), YZ311.00 disc brake hoses, and sealing parts (O-Ring 530301011650070007) every 70 operating hours; replace worn or damaged parts in time to avoid system failure or safety hazards.

 Cleaning & Lubrication: Keep bearings (6238, R009D-1), shafts (JZG34B-4), and bushings (BKD-3-6D3) clean; apply appropriate lubricating oil (matching the equipment manual) to reduce friction and prevent rust and wear.

 Storage Requirements: Store parts in a dry, ventilated, and dust-free warehouse; avoid direct sunlight and contact with corrosive substances (especially safety valves, O-rings, and electrical components). For high-pressure hoses and valves, store them in a cool, moisture-free environment to maintain their performance.

 Installation Notes: Ensure parts are installed correctly according to the equipment manual; avoid forced installation (e.g., aligning Hexagon Head Bolts M24×2×90 properly to prevent thread damage). For safety valves and BOPs, calibrate pressure before installation to ensure accurate operation.

 Filter & Fluid Maintenance: Regularly replace filters (1R-0726, SPX-06×25) to ensure the cleanliness of oil and hydraulic fluid; check hydraulic motor (512601040210030000) and oil pump (4W5479) for leaks and proper operation.

We supply the following spare parts:

Full opening safety valve 3-1/2″ IF BOX × 3-1/2″ IF PIN 5000PSI.

Full opening safety valve 3-1/2″ EUE BOX × 3-1/2″ EUE PIN 5000 PSI.

Full opening safety valve 6-5/8″ Reg P/B

Inside BOP 4-1/2″ IF BOX × 4-1/2″ IF PIN

Full opening safety valve 4-1/2″ IF BOX × 4-1/2″ IF PIN

HOSE ASSEMBLY, RUBBER, FOR DISC BRAKE HPU, MODEL: YZ311.00, MAKE: HH, P/N: 16 I-1200JM26X1.5C

HOSE ASSEMBLY, RUBBER, FOR DISC BRAKE HPU, MODEL: YZ311.00, MAKE: HH, P/N: 16 I-500JM26X1.5C

HOSE ASSEMBLY, RUBBER, FOR DISC BRAKE HPU, MODEL: YZ311.00, MAKE: HH, P/N: 10 I-1200JM16X1.5C

HOSE ASSEMBLY, RUBBER, FOR DISC BRAKE HPU, MODEL: YZ311.00, MAKE: HH, P/N: 10 I-2000JM16X1.5C

HOSE ASSEMBLY, RUBBER, FOR DISC BRAKE HPU, MODEL: YZ311.00, MAKE: HH, P/N: 10 I-1400JM16X1.5C

HOSE ASSEMBLY, RUBBER, FOR DISC BRAKE HPU, MODEL: YZ311.00, MAKE: HH, P/N: 19 I-1200JM36X2D

HOSE ASSEMBLY, RUBBER, FOR DISC BRAKE HPU, MODEL: YZ311.00, MAKE: HH, P/N: 19 I-1300JM36X2D

HOSE ASSEMBLY, RUBBER, FOR DISC BRAKE HPU, MODEL: YZ311.00, MAKE: HH, P/N: 13 I-1400JM22X1.5C

HOSE ASSEMBLY, RUBBER, FOR DISC BRAKE HPU, MODEL: YZ311.00, MAKE: HH, P/N: 13 I-1200JM22X1.5C

CLAMP 35 JZ400.1-8D

PRESSURE BLOCK JZ400.1-7

WEDGED LOCK WASHER M24 HLS-24

SHAFT JZG34B-4

EXPANSION RING JZ400.1-5

OIL SEAL JZ400.1-6

CAPSULE, FOR PLUSATION DAMPENER, MODEL: KB-25, MAKE: MTPM, P/N: LW-AB25-04.02

CONNECT, 1/4, FOR PLUSATION DAMPENER, MODEL: KB-25, MAKE: MTPM, P/N: LW-AB25-04.06

TEE JOINT, 1/4, FOR PLUSATION DAMPENER, MODEL: KB-25, MAKE: MTPM, P/N: LW-AB25-04.07

ANGLE STOP VALVE, FOR PLUSATION DAMPENER, MODEL: KB-25, MAKE: MTPM, P/N: LW-AB25-04.08

PRESSURE GAUGE, 0-25MPA, FOR PLUSATION DAMPENER, MODEL: KB-25, MAKE: MTPM, P/N: LW-AB25-04.09

retaining ring P1000205AA

3512Machine filter 1R-0726

Socket ZJ70D Φ16GB5646-85

High-pressure hose 140507021602000000

Line filter ZJ70DB SPX-06×25

OIL PUMP GEAR ASSEMBLY P/N CS33001-0620A00

Airbag 515876

Weight gauge JZ Flange double scale seismic gauge YK-150 60MPa

R009D-1 Froth Pump Bearing

bearing 430103002233000012

3932-62 Nut housing jam

Boiler WNS2-1.25-Y large switch R30

Rig Chain 8 44.45mm RS140-8

light bulb 0405-0022-00 3W 28VWest

oRing 530301011650070007

972-0BA41-0XA0 9-pin plug (RS485)

Rubber sheathed power cable YCW 3*1mm2 075kV

BEARING 6238; 610102-00-1148

hydraulic motor 512601040210030000

S30078HS1 seal

LMD O-ring AS-220 Viton 381611 GE

cylinder head gasket 2W7984

nut T53-2005

Faucet faucet flush pipe SL-250

suction flange AH1001010525

Hexagon Head Bolts Fine Pitch Full Thread DQ70BSC 4202001890 M24×2×90 8.8class

oil pump 4W5479

Bushing BKD-3-6D3

countersunk screw ZJ45 241.35.96.57 10×45

exhaust valve 5S5918

 

On-Site Fault Maintenance Cases

Here are 3 real on-site maintenance cases, showing how our parts solve practical problems for customers, reduce downtime, and improve equipment performance:

Case 1: Safety Valve Malfunction in Oilfield Wellhead

A customer’s oilfield wellhead experienced pressure buildup due to a faulty non-original full opening safety valve, risking equipment damage and safety hazards. We supplied our Full Opening Safety Valve 3-1/2″ IF BOX × 3-1/2″ IF PIN 5000PSI, which is API 6A compliant and calibrated to the exact pressure requirement. After replacement, the valve automatically relieved excess pressure, ensuring safe wellhead operation and reducing downtime by 85%.

Case 2: Hose Leakage in YZ311.00 Disc Brake HPU

An oilfield’s ZJ70D drilling rig had a leaking rubber hose in the YZ311.00 disc brake HPU, leading to reduced brake performance and unsafe operation. We provided the YZ311.00 Disc Brake HPU Hose Assembly (P/N: 16 I-1200JM26X1.5C), which is perfectly matched to the HPU model. After installation, the leakage problem was completely solved, and the disc brake operated reliably, ensuring drilling rig safety.

Case 3: Bearing Failure in R009D-1 Froth Pump

A customer’s R009D-1 froth pump experienced frequent jams due to a worn bearing, affecting industrial production. We supplied the R009D-1 Froth Pump Bearing, which features high load-bearing capacity and wear resistance. After replacement, the pump operated smoothly, eliminating jams and extending pump service life by 60%.

FAQ (Frequently Asked Questions)

Question

Answer

Are your parts compatible with ZJ series drilling rigs (ZJ45, ZJ70D) and YZ311.00 disc brake HPU?

Yes, all our parts are specifically engineered to match ZJ series drilling rigs and YZ311.00 disc brake HPUs. For example, our ZJ70D Socket Φ16GB5646-85 and ZJ45 Countersunk Screw 241.35.96.57 10×45 are fully compatible with their respective ZJ models, and the YZ311.00 Hose Assemblies are tailored for the HH-make YZ311.00 HPU. We verify compatibility before supply to ensure a perfect fit.

How can I confirm the correct part for my equipment (e.g., safety valve, KB-25 dampener part)?

You can provide us with your equipment model (e.g., ZJ70D, YZ311.00, KB-25) or the original part number (e.g., Safety Valve 3-1/2″ IF, Dampener Capsule LW-AB25-04.02). Our technical team will check compatibility and recommend the exact part you need. We also provide detailed specifications and dimensional drawings to help you confirm.

Do you provide technical support for installation and fault diagnosis of your parts?

Yes, we offer free technical support to help you install and maintain our parts. Our team can provide step-by-step installation guidelines (e.g., for Full Opening Safety Valves and YZ311.00 Hose Assemblies) and help diagnose on-site faults. All our products meet ISO and API standards, ensuring reliable performance and easy maintenance. We also provide maintenance checklists to extend part service life.

Procurement & Technical Reference Standards

To help you purchase the right parts and solve technical problems efficiently, we provide clear procurement and technical reference standards that align with industry best practices:

 Procurement Reference Standards: All parts are supplied with quality certificates (API 6A for safety valves, ISO 9001 for general parts), compatibility reports, and detailed specifications. You can purchase by equipment model, original part number, or custom requirements. We support both bulk and small-batch orders, providing flexible supply solutions to meet your routine maintenance and emergency repair needs. Our parts are priced competitively while maintaining OEM-level quality.

 Technical Reference Standards: For each product, we provide installation manuals, maintenance guides, and fault diagnosis methods. For example, we offer detailed instructions for installing the Full Opening Safety Valve 3-1/2″ IF and replacing the YZ311.00 Disc Brake HPU Hose Assembly. We also provide material specifications and pressure calibration guidelines to help your maintenance team solve technical issues quickly and accurately.

Conclusion & Procurement Invitation

Our full range of mechanical parts—from the Full Opening Safety Valve 3-1/2″ IF, YZ311.00 Disc Brake HPU Hose Assembly, and Inside BOP 4-1/2″ IF to bearings, filters, and electrical components—are engineered to solve your equipment maintenance pain points, improve operational efficiency, and reduce long-term costs. We adhere to strict quality control processes, ensuring each part is reliable, compatible, and durable. Whether you need standard replacement parts, specialized components for oilfield well control, or industrial equipment accessories, we are your trusted supply partner.

We invite you to contact us to discuss your specific needs. Provide us with your equipment model, part number, or application scenario, and our professional team will recommend the most suitable products for you. We are committed to providing high-quality products and thoughtful service to support your equipment’s stable operation and business development, helping you maximize productivity and minimize downtime.

 

contact us 

Emeil: [email protected]   whatsapp: +86 15275658619

Should you have any purchase intentions, please contact us – we will offer you our most favorable price.


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