Throttle Shutdown Lines & Matching Parts for Drilling Rig - Z08040000002AA

1

Throttle shutdown lines

Z08040000002AA

1

High-pressure seamless steel pipe + anti-corrosion epoxy coating, inner wall polished, compliant with API Spec 7K and ISO 4394-1

1. Fatigue cracking caused by long-term high-frequency vibration during drilling; 2. Coating damage and corrosion due to contact with drilling fluid; 3. Over-bending during installation leads to pipe wall damage.

1. Ensure installation bending radius is not less than 8 times the pipe diameter; 2. Regularly inspect the coating for damage and reapply anti-corrosion paint if needed; 3. Avoid collision with drilling tools during operation.

1

Spring

P9000049AA

65Mn spring steel, heat-treated, surface galvanized, hardness HRC 43-48, compliant with GB/T 1239.2-2009

1. Fatigue loss of elasticity due to long-term repeated compression; 2. Corrosion caused by outdoor moisture and dust; 3. Over-compression during installation exceeds elastic limit.

1. Do not exceed the specified compression range during installation; 2. Regularly clean and apply anti-rust oil; 3. Replace immediately if deformation or rust is found.

2

Support

P7100044AA

Low-carbon steel Q235B, surface powder coating, thickness 10mm, load-bearing capacity meets GB/T 700-2006

1. Deformation due to uneven stress during installation; 2. Coating wear and corrosion caused by long-term friction with lines; 3. Impact damage from falling debris on site.

1. Ensure the installation surface is flat and fasteners are evenly tightened; 2. Install anti-wear gaskets between supports and lines; 3. Add protective covers to avoid impact.

3

Support

P7100045AA

Low-carbon steel Q235B, surface hot-dip galvanizing, thickness 12mm, corrosion resistance higher than ordinary powder coating

1. Welding joint fatigue and cracking due to vibration; 2. Galvanizing layer damage and corrosion; 3. Loose connection with the rig frame leads to displacement.

1. Regularly check welding joints for cracks; 2. Avoid scratching the galvanizing layer during maintenance; 3. Re-tighten fasteners monthly.

1

Hose assembly 6

Z08330100034AA

Inner layer: NBR (nitrile rubber), reinforcement layer: 4-layer high-strength steel wire, outer layer: wear-resistant CR (chloroprene rubber), compliant with ISO 6803

1. Over-bending exceeds the minimum radius, damaging the steel wire layer; 2. High-temperature hydraulic oil accelerates rubber aging; 3. Friction with rig components wears the outer layer.

1. Ensure bending radius ≥ 6 times the hose diameter; 2. Avoid contact with high-temperature engine components; 3. Install protective sleeves at friction points.

2

Hose assembly 6

Z08330100035AA

Inner layer: NBR (nitrile rubber), reinforcement layer: 4-layer high-strength steel wire, outer layer: wear-resistant CR (chloroprene rubber), compliant with ISO 6803

1. Pulse pressure fatigue leads to steel wire breakage; 2. Oil leakage due to poor joint connection; 3. Rubber aging caused by long-term exposure to sunlight.

1. Replace after 3-4 years of service even without obvious damage; 2. Check joint tightness regularly; 3. Avoid direct sunlight for long periods.

3

Hose assembly 6

Z08330100036AA

Inner layer: NBR (nitrile rubber), reinforcement layer: 4-layer high-strength steel wire, outer layer: wear-resistant CR (chloroprene rubber), compliant with ISO 6803

1. Damage caused by improper installation and stretching; 2. Corrosion of the outer layer by chemical drilling fluid; 3. Foreign object impact leads to bulging.

1. Reserve sufficient length during installation to avoid stretching; 2. Clean the outer layer promptly after contact with drilling fluid; 3. Avoid impact from hard objects.

4

Hose assembly 6

Z08330100037AA

Inner layer: NBR (nitrile rubber), reinforcement layer: 4-layer high-strength steel wire, outer layer: wear-resistant CR (chloroprene rubber), compliant with ISO 6803

1. Joint wear due to vibration leads to oil leakage; 2. Rubber cracking caused by low temperature in winter; 3. Steel wire layer damage due to excessive pressure.

1. Use a torque wrench to tighten joints to standard torque; 2. Avoid using in extremely low temperature (-20℃ below) without insulation; 3. Ensure system pressure does not exceed the hose’s rated pressure.

5

Hose assembly 6

Z08330100038AA

Inner layer: NBR (nitrile rubber), reinforcement layer: 4-layer high-strength steel wire, outer layer: wear-resistant CR (chloroprene rubber), compliant with ISO 6803

1. Long-term contact with sharp edges leads to outer layer wear; 2. Rubber aging due to frequent temperature changes; 3. Fatigue damage caused by repeated bending.

1. Install protective sleeves near sharp edges; 2. Check for cracks regularly in areas with large temperature changes; 3. Minimize unnecessary bending during operation.

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Hose assembly 6

Z08330100039AA

Inner layer: NBR (nitrile rubber), reinforcement layer: 4-layer high-strength steel wire, outer layer: wear-resistant CR (chloroprene rubber), compliant with ISO 6803

1. Oil leakage due to seal ring aging at the joint; 2. Outer layer damage caused by dust and gravel erosion; 3. Steel wire corrosion due to inner layer damage.

1. Replace the joint seal ring annually; 2. Clean the hose surface regularly to remove dust and gravel; 3. Check for inner layer damage by observing oil color.

7

Hose assembly 6

Z08330100040AA

Inner layer: NBR (nitrile rubber), reinforcement layer: 4-layer high-strength steel wire, outer layer: wear-resistant CR (chloroprene rubber), compliant with ISO 6803

1. Over-tightening of joints leads to hose damage; 2. Rubber swelling caused by incompatible hydraulic oil; 3. Fatigue fracture of the steel wire layer.

1. Follow the recommended torque when tightening joints; 2. Use hydraulic oil that meets ISO VG 46 standards; 3. Conduct pressure tests quarterly to check for hidden damage.

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Hose assembly 6

Z08330100041AA

Inner layer: NBR (nitrile rubber), reinforcement layer: 4-layer high-strength steel wire, outer layer: wear-resistant CR (chloroprene rubber), compliant with ISO 6803

1. Damage caused by collision with moving parts of the rig; 2. Corrosion due to humid environment; 3. Rubber aging caused by long-term idle storage.

1. Keep a safe distance from moving rig parts; 2. Store in a dry and ventilated place when idle; 3. Check and replace if stored for more than 1 year without use.

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Hose assembly 6

Z08330100042AA

Inner layer: NBR (nitrile rubber), reinforcement layer: 4-layer high-strength steel wire, outer layer: wear-resistant CR (chloroprene rubber), compliant with ISO 6803

1. Pulse pressure impact leads to joint loosening and oil leakage; 2. Outer layer wear caused by friction with the ground; 3. Rubber cracking due to high temperature.

1. Install shock-absorbing gaskets at joints; 2. Avoid dragging the hose on the ground; 3. Keep away from high-temperature exhaust pipes.

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Hose assembly 6

Z08330100043AA

Inner layer: NBR (nitrile rubber), reinforcement layer: 4-layer high-strength steel wire, outer layer: wear-resistant CR (chloroprene rubber), compliant with ISO 6803

1. Damage caused by improper disassembly and assembly; 2. Rubber aging due to UV radiation; 3. Steel wire breakage due to excessive bending.

1. Use special tools for disassembly and assembly, avoid violent operation; 2. Cover with a protective sleeve to prevent UV radiation; 3. Follow the minimum bending radius requirement.

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Hose assembly 6

Z08330100044AA

Inner layer: NBR (nitrile rubber), reinforcement layer: 4-layer high-strength steel wire, outer layer: wear-resistant CR (chloroprene rubber), compliant with ISO 6803

1. Oil leakage due to joint corrosion; 2. Outer layer damage caused by chemical corrosion; 3. Fatigue damage due to long-term high-pressure operation.

1. Apply anti-corrosion sealant to joints; 2. Avoid contact with chemical agents; 3. Reduce long-term high-pressure operation when possible.

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Hose assembly 6

Z08330100045AA

Inner layer: NBR (nitrile rubber), reinforcement layer: 4-layer high-strength steel wire, outer layer: wear-resistant CR (chloroprene rubber), compliant with ISO 6803

1. Uneven stress leads to local wear; 2. Rubber aging caused by temperature fluctuations; 3. Steel wire layer damage due to foreign object penetration.

1. Ensure even stress during installation; 2. Check for cracks in areas with large temperature fluctuations; 3. Prevent foreign objects from piercing the hose.

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Hose assembly 6

Z08330100046AA

Inner layer: NBR (nitrile rubber), reinforcement layer: 4-layer high-strength steel wire, outer layer: wear-resistant CR (chloroprene rubber), compliant with ISO 6803

1. Joint damage caused by vibration; 2. Outer layer wear due to friction with other hoses; 3. Rubber swelling caused by oil contamination.

1. Install vibration-damping brackets at joints; 2. Separate hoses to avoid mutual friction; 3. Regularly replace hydraulic oil to keep it clean.

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Hose assembly 6

Z08330100047AA

Inner layer: NBR (nitrile rubber), reinforcement layer: 4-layer high-strength steel wire, outer layer: wear-resistant CR (chloroprene rubber), compliant with ISO 6803

1. Damage caused by improper storage; 2. Corrosion due to humid and dusty environment; 3. Rubber aging caused by long-term exposure to air.

1. Store in a clean, dry place when not in use; 2. Clean the hose surface regularly; 3. Cover with a plastic film to prevent air oxidation.

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Hose assembly 6

Z08330100048AA

Inner layer: NBR (nitrile rubber), reinforcement layer: 4-layer high-strength steel wire, outer layer: wear-resistant CR (chloroprene rubber), compliant with ISO 6803

1. Over-pressure operation leads to hose burst; 2. Joint wear due to frequent disassembly; 3. Outer layer damage caused by impact from falling tools.

1. Ensure system pressure does not exceed the rated pressure; 2. Minimize frequent disassembly of joints; 3. Keep the work area clean to avoid tool falling.

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Hose assembly 10

Z08330300039AA

Inner layer: NBR (nitrile rubber), reinforcement layer: 6-layer high-strength steel wire, outer layer: wear-resistant CR (chloroprene rubber), compliant with ISO 18752

1. Steel wire layer damage due to excessive bending; 2. High-pressure pulse leads to fatigue burst; 3. Outer layer wear caused by friction with heavy components.

1. Ensure bending radius ≥ 8 times the hose diameter; 2. Conduct regular pressure tests (12 MPa, 30 minutes); 3. Install anti-wear pads between the hose and heavy components.

17

Hose assembly 10

Z08330300040AA

Inner layer: NBR (nitrile rubber), reinforcement layer: 6-layer high-strength steel wire, outer layer: wear-resistant CR (chloroprene rubber), compliant with ISO 18752

1. Joint oil leakage due to seal failure; 2. Rubber aging caused by high temperature; 3. Steel wire corrosion due to inner layer damage.

1. Replace seal rings every 6 months; 2. Avoid contact with high-temperature components; 3. Check for oil seepage regularly to detect inner layer damage early.

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Copper pipe assembly 6

Z08360100007AA

T2 pure copper, seamless, surface anti-oxidation treatment, wall thickness 1.5mm, compliant with GB/T 18033-2017

1. Bending deformation caused by impact from external forces; 2. Oxidation and corrosion of the surface; 3. Joint leakage due to improper welding.

1. Avoid collision with hard objects during installation and operation; 2. Regularly clean the surface and apply anti-oxidation agent; 3. Ensure welding quality meets GB/T 13148-2017.

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Copper pipe assembly 6

Z08360100008AA

T2 pure copper, seamless, surface anti-oxidation treatment, wall thickness 1.5mm, compliant with GB/T 18033-2017

1. Fatigue cracking due to vibration; 2. Corrosion caused by contact with acidic drilling fluid; 3. Damage caused by improper bending during installation.

1. Install vibration-damping brackets to reduce vibration; 2. Avoid contact with acidic substances; 3. Use professional bending tools to ensure bending quality.

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Z1/4" tee

QBJ806020202

Carbon steel AISI 1045, zinc dichromate plating, thread compliant with ISO 261 and DIN 13-1

1. Thread wear due to over-tightening during installation; 2. Corrosion of the plating layer caused by humid environment; 3. Stress concentration at the tee joint leads to cracking.

1. Use a torque wrench to tighten to standard torque (7-10 N·m); 2. Apply anti-corrosion sealant to threads; 3. Avoid excessive force when connecting branches.

2

Z1/4" fitting

QBJ5230202

Carbon steel AISI 1045, zinc plating, thread precision machining, compliant with ISO 965-1

1. Seal surface damage due to improper installation; 2. Thread sliding caused by violent disassembly; 3. Corrosion leads to oil leakage.

1. Align the seal surface correctly during installation; 2. Use appropriate tools for disassembly, avoid brute force; 3. Regularly clean and apply anti-rust oil.

3

M12x1.5-Z1/4" fitting

QBJ5011202

Carbon steel AISI 1045, nickel plating, thread pitch 1.5mm, compliant with ISO 898-1

1. Thread wear due to frequent disassembly; 2. Nickel layer damage and corrosion; 3. Vibration leads to loose connection and seal damage.

1. Minimize frequent disassembly; 2. Avoid scratching the nickel layer during maintenance; 3. Re-tighten regularly to prevent loosening.

4

M12x1.5-Z1/4" fitting

QBJ6011202

Carbon steel AISI 1045, nickel plating, thread pitch 1.5mm, compliant with ISO 898-1

1. Stress concentration caused by uneven installation; 2. Corrosion of the seal surface; 3. Thread damage due to over-tightening.

1. Ensure even force during installation; 2. Clean the seal surface before installation; 3. Follow the recommended torque to avoid over-tightening.

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Z3/8"X1/4" bushing

QBJ10010302

Stainless steel 304, passivated surface, thread compliant with ISO 262, precision machining

1. Thread wear due to improper installation and disassembly; 2. Corrosion in humid and salty environments; 3. Deformation caused by excessive force.

1. Use a wrench to install and disassemble, avoid hand tightening; 2. Suitable for non-salty environments, add anti-corrosion measures if needed; 3. Do not apply excessive force to prevent deformation.

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M14x1.5-Z3/8" fitting

QBJ6051403

Stainless steel 316, passivated surface, thread pitch 1.5mm, compliant with ISO 965-1

1. Cracking at the thread root due to vibration; 2. Passivation layer damage and corrosion; 3. Seal failure due to dirt on the seal surface.

1. Install vibration-damping gaskets; 2. Avoid scratching the passivation layer; 3. Clean the seal surface thoroughly before installation.

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M14x1.5-Z3/8" fitting

QBJ5071403

Stainless steel 316, passivated surface, thread pitch 1.5mm, compliant with ISO 965-1

1. Thread sliding caused by over-tightening; 2. Corrosion caused by contact with chemical drilling fluid; 3. Wear of the seal surface due to long-term use.

1. Use a torque wrench to control tightness; 2. Avoid contact with chemical drilling fluid; 3. Replace the fitting if the seal surface is worn.

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M14x1.5-Z1/4" fitting

QBJ6051402

Carbon steel AISI 1045, zinc plating, thread pitch 1.5mm, compliant with ISO 261

1. Corrosion of the zinc layer caused by outdoor environment; 2. Thread wear due to frequent disassembly; 3. Seal damage due to vibration.

1. Regularly check the zinc layer and re-plate if damaged; 2. Minimize disassembly frequency; 3. Install anti-vibration components.

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M10X1-Z1/4" bushing

QBJ10061002

Carbon steel 45#, surface black oxide treatment, thread pitch 1.0mm, compliant with GB/T 9440-2010

1. Thread wear due to improper installation; 2. Oxide layer damage and corrosion; 3. Deformation caused by uneven force.

1. Align the thread correctly during installation; 2. Avoid scratching the oxide layer; 3. Ensure even force when tightening.

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Sealing washer 10

P1000182AA

NBR (nitrile rubber), shore hardness 70±5, oil-resistant and high-temperature resistant (≤120℃), compliant with GB/T 5720-2008

1. Aging and hardening caused by high temperature and oil immersion; 2. Damage caused by uneven compression; 3. Cracking due to long-term use.

1. Replace annually or when hardening is found; 2. Ensure even compression during installation; 3. Avoid contact with high-temperature components.

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M14x1.5-Z1/4" fitting

QBJ5071402

Carbon steel AISI 1045, zinc plating, thread pitch 1.5mm, compliant with ISO 261

1. Massive wear due to batch installation with improper tools; 2. Corrosion caused by humid on-site environment; 3. Thread sliding due to over-tightening.

1. Use uniform tools and torque for batch installation; 2. Conduct regular anti-corrosion maintenance; 3. Train operators to follow torque standards.

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M18x1.5-Z1/4" fitting

QBJ6051802

Carbon steel AISI 1045, zinc plating, thread pitch 1.5mm, compliant with ISO 261

1. Stress concentration at the thread root due to heavy load; 2. Corrosion of the zinc layer; 3. Seal damage due to vibration.

1. Install reinforcement brackets for heavy-load positions; 2. Regularly inspect and maintain the zinc layer; 3. Add anti-vibration gaskets.

13

M18x1.5-Z1/4" fitting

QBJ5071802

Carbon steel AISI 1045, zinc plating, thread pitch 1.5mm, compliant with ISO 261

1. Thread wear due to infrequent disassembly and maintenance; 2. Corrosion caused by long-term exposure to dust and moisture; 3. Seal failure due to dirt accumulation.

1. Conduct regular disassembly and maintenance; 2. Clean the fitting surface regularly; 3. Remove dirt from the seal surface before installation.

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Bolt M6X25

4316806025

Alloy steel 8.8 grade, zinc plating, tensile strength ≥ 830MPa, compliant with ISO 898-1

1. Fatigue fracture caused by frequent vibration; 2. Thread wear due to over-tightening; 3. Corrosion of the zinc layer leads to rust and jamming.

1. Use matching nuts and spring washers; 2. Tighten to standard torque (8-12 N·m); 3. Regularly clean and apply anti-rust oil.

2

Nut M6

4309300006

Carbon steel 45#, zinc plating, thread compliant with ISO 262, hardness HRC 28-32

1. Thread wear caused by frequent disassembly; 2. Corrosion leads to thread jamming; 3. Deformation due to over-tightening.

1. Avoid violent disassembly and assembly; 2. Store in a dry environment when not in use; 3. Replace if thread sliding occurs.

3

Spring washer 6

4313100006

65Mn spring steel, surface galvanized, hardness HRC 42-48, compliant with GB/T 93-1987

1. Fatigue loss of elasticity due to long-term compression; 2. Corrosion causes fracture; 3. Deformation due to incorrect installation.

1. Replace together with bolts and nuts during maintenance; 2. Do not reuse deformed washers; 3. Ensure correct installation direction.

4

Bolt M8X20

4301308020

Alloy steel 8.8 grade, zinc plating, tensile strength ≥ 830MPa, compliant with ISO 898-1

1. Fatigue fracture caused by high vibration; 2. Thread damage due to over-tightening; 3. Corrosion leads to rust and difficulty in disassembly.

1. Use a torque wrench to tighten to 15-20 N·m; 2. Apply thread locking agent to prevent loosening; 3. Regularly check for rust.

5

Nut M8

4309300008

Carbon steel 45#, zinc plating, thread compliant with ISO 262, hardness HRC 28-32

1. Thread wear due to infrequent use and rust; 2. Deformation caused by uneven force; 3. Corrosion leads to thread jamming.

1. Regularly clean and apply anti-rust oil; 2. Ensure even force when tightening; 3. Replace if rust is severe.

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Spring washer 8

4313100008

65Mn spring steel, surface galvanized, hardness HRC 42-48, compliant with GB/T 93-1987

1. Elastic failure due to long-term high-load compression; 2. Corrosion causes cracking; 3. Deformation due to incorrect installation.

1. Replace regularly during routine maintenance; 2. Avoid reuse of damaged washers; 3. Check the installation direction before use.

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Bolt M5X60

4316705060

Alloy steel 8.8 grade, zinc plating, tensile strength ≥ 830MPa, compliant with ISO 898-1

1. Bending deformation caused by uneven stress; 2. Fatigue fracture due to vibration; 3. Thread wear due to over-tightening.

1. Ensure the installation surface is flat; 2. Install anti-vibration gaskets; 3. Tighten to standard torque (6-8 N·m).

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Nut M5

4309300005

Carbon steel 45#, zinc plating, thread compliant with ISO 262, hardness HRC 28-32

1. Thread wear caused by frequent disassembly; 2. Corrosion leads to thread jamming; 3. Damage due to improper tool use.

1. Use a suitable wrench for operation; 2. Store in a dry and clean place; 3. Replace if thread damage is found.

1

What is the service life of the core throttle shutdown lines (Z08040000002AA) under normal drilling conditions?

Under normal on-site conditions (proper installation, regular maintenance, no severe impact or corrosion), the service life of the throttle shutdown lines (Z08040000002AA) is 2-3 years. It is recommended to conduct a comprehensive inspection every 6 months, and replace it immediately if there are signs of coating damage, pipe wall deformation or oil leakage.

2

Can the 6mm and 10mm hose assemblies be used interchangeably?

No, they cannot be used interchangeably. The 6mm hose assembly (compliant with ISO 6803) is designed for low-pressure signal transmission, with a 4-layer steel wire reinforcement; the 10mm hose assembly (compliant with ISO 18752) is for high-pressure transmission, with a 6-layer steel wire reinforcement. Their inner diameter, pressure-bearing capacity and matching fittings are different, and interchange use will lead to hose burst, oil leakage and system failure.

3

How to handle the corrosion of galvanized fittings and fasteners on site?

First, use fine sandpaper to gently polish the corroded area to remove rust, then clean and dry the surface thoroughly. For slight corrosion, apply anti-rust oil or anti-corrosion sealant to protect the surface; for severe corrosion (thread damage, plating layer peeling off), replace the fittings/fasteners immediately to avoid loosening or oil leakage caused by structural damage. It is recommended to conduct anti-corrosion maintenance once a month in humid or dusty environments.

4

What are the key points to check during the routine maintenance of the throttle shutdown system?

Routine maintenance focuses on 4 key points: ① Check the integrity of lines (no damage, deformation, oil leakage); ② Inspect fittings and joints (no loosening, corrosion, thread wear); ③ Check auxiliary components (springs have good elasticity, supports are stable, washers are not aging); ④ Verify the flexibility of the shutdown action (conduct 3-5 shutdown tests to ensure rapid and stable response). It is recommended to carry out routine maintenance once a week during continuous operation.

5

Why do the copper pipe assemblies (6mm) often bend and deform, and how to avoid it?

Copper pipe assemblies are prone to deformation mainly due to two reasons: ① External impact during on-site operation or installation; ② Improper bending during installation, exceeding the material's bearing capacity. To avoid this, first, install protective sleeves or baffles around the copper pipes to prevent collision with hard objects or falling debris; second, use professional bending tools during installation, ensure the bending radius is not less than 10 times the pipe diameter, and avoid forced bending.

6

What should be paid attention to when replacing the sealing washers (P1000182AA)?

Three key points should be noted: ① Select the matching model (P1000182AA) and ensure the material is NBR nitrile rubber (shore hardness 70±5) to avoid mismatched size or material affecting the sealing effect; ② Clean the seal surface of the fitting thoroughly before installation, and remove dirt, oil stains or rust; ③ Tighten the fitting to the standard torque during installation to ensure even compression of the washer, avoiding over-tightening (damaging the washer) or under-tightening (causing oil leakage).

7

How to judge whether the spring (P9000049AA) is fatigued and needs to be replaced?

Judge by three phenomena: ① After long-term use, the spring cannot return to its original length after compression, and there is obvious permanent deformation; ② The surface of the spring has rust, cracks or peeling of the galvanized layer; ③ During the shutdown operation, the throttle response is slow or inflexible, which is caused by the loss of elasticity of the spring. Once any of the above phenomena occurs, the spring should be replaced immediately to avoid system shutdown failure.