GH3101-28.00A JA-3 Relieve Valve for Sichuan Honghua Mud Pump HHF-1000

1

GH3101-28.03.00

Piston assembly

Stainless steel 316 (piston seal: nitrile rubber NBR 70)

1. Wear from high-pressure fluid impact and friction with valve body; 2. Seal aging leading to pressure leakage; 3. Jamming from fluid impurities.

1. Maintain fluid cleanliness to avoid impurity buildup; 2. Inspect piston seal quarterly and replace if hardened; 3. Lubricate with high-pressure resistant grease every 3 months.

2

GH3101-28.04

Valve Body

Carbon steel Q355B (surface quenching + anti-corrosion epoxy coating)

1. Internal erosion from high-velocity fluid during pressure relief; 2. Corrosion from acidic/alkaline mud components; 3. Stress cracking from repeated overpressure cycles.

1. Avoid frequent overpressure triggers to reduce stress; 2. Inspect internal walls annually for erosion pits; 3. Touch up anti-corrosion coating if peeling occurs.

3

GH3101-28.05

Piston rod

Alloy steel 40Cr (quenched and tempered, surface chrome-plated for wear resistance)

1. Surface wear from friction with seals; 2. Bending deformation from uneven pressure; 3. Chrome peeling leading to corrosion.

1. Ensure alignment with piston to avoid uneven stress; 2. Inspect chrome layer for peeling monthly; 3. Replace if bending deviation exceeds 0.1mm per meter.

1

GH3101-28.02

Retainer ring

Spring steel 65Mn (heat-treated for elasticity and wear resistance)

1. Elastic fatigue from repeated pressure cycles; 2. Deformation from improper installation; 3. Corrosion in humid environments.

1. Install with specialized tools to avoid deformation; 2. Inspect elasticity quarterly; 3. Replace if deformation or corrosion affects part retention.

2

GH3101-28.06

Buffer pad

Polyurethane (PU) foam (high elasticity, pressure-resistant)

1. Aging and hardening from long-term pressure impact; 2. Damage from sharp edges of adjacent parts; 3. Deterioration from oil contamination.

1. Inspect for hardening or cracks every 6 months; 2. Ensure no sharp edges contact the pad during assembly; 3. Replace if buffer performance decreases by 30%.

3

GH3101-28.09

Safety guard

Carbon steel Q235B (surface galvanized for anti-corrosion)

1. Impact damage from falling construction debris; 2. Rusting leading to structural weakening; 3. Deformation from improper handling.

1. Ensure firm installation before pump operation; 2. Inspect for rust and deformation monthly; 3. Replace if structural damage compromises protection.

4

GH3101-28.14

Spacer ring

Stainless steel 304

1. Wear from friction with adjacent components; 2. Corrosion from fluid leakage; 3. Deformation from uneven pressure.

1. Clean contact surfaces before installation; 2. Inspect for wear and corrosion quarterly; 3. Replace if thickness wear exceeds 0.2mm.

5

GH3101-28.12A

Warning plate

Aluminum alloy (surface printed with wear-resistant ink)

1. Ink fading from sun exposure and mud contamination; 2. Bending deformation from impact; 3. Corrosion from humid air.

1. Clean surface mud regularly to protect printed content; 2. Avoid impact during maintenance; 3. Replace if warning text is illegible.

6

GH3101-28.15A

Nameplate

Stainless steel 304 (laser-engraved for durability)

1. Corrosion from mud and humid environments; 2. Scratching leading to illegible engraving; 3. Loosening from vibration.

1. Secure firmly to avoid vibration-induced loosening; 2. Clean with neutral detergent to prevent corrosion; 3. Inspect engraving clarity annually.

1

GH3101-28.01

Connector

Stainless steel 304

1. Thread wear from repeated assembly/disassembly; 2. Corrosion from chemical components in mud; 3. Seal failure from impurity contamination.

1. Apply PTFE thread sealant before installation; 2. Use UNC-standard wrenches to avoid thread slipping; 3. Inspect thread integrity quarterly.

2

GH3101-28.07

Elastic straight pin

Spring steel 65Mn (surface anti-rust treated)

1. Elastic fatigue from repeated vibration; 2. Bending or breaking from improper installation; 3. Corrosion leading to reduced elasticity.

1. Install with matching tools to avoid over-force; 2. Inspect for bending or rust monthly; 3. Replace if elasticity decreases or cracks appear.

3

GH3101-28.13

Pin

Carbon steel 45# (heat-treated, surface galvanized)

1. Wear from friction with mating parts; 2. Shear failure from uneven force; 3. Corrosion in humid/muddy environments.

1. Ensure proper alignment during installation to distribute force evenly; 2. Inspect for wear and corrosion quarterly; 3. Replace if shear cracks are detected.

4

GB/T91-1986

Pin：4×26

Carbon steel 10# (surface anti-corrosion treated, compliant with GB/T91-1986)

1. Bending from improper installation; 2. Corrosion leading to structural weakening; 3. Wear from vibration-induced friction.

1. Use tools matching pin size for installation; 2. Store in dry environment before use; 3. Replace if bending or corrosion affects fit.

5

American standard (item 17)

Screw：8（0.164）-32UNC-2A×16

Alloy steel 40Cr (quenched and tempered, surface zinc-plated)

1. Thread stripping from over-tightening or cross-threading; 2. Fatigue fracture from vibration; 3. Corrosion leading to seized threads.

1. Torque to 6-8N·m (compliant with UNC 2A standards); 2. Align threads correctly before tightening; 3. Apply anti-rust thread lubricant.

6

American (item 18)

Nut：8（0.164）-32UNC-2B

Carbon steel 10B21 (heat-treated, surface zinc-plated)

1. Thread wear from repeated use; 2. Loosening due to vibration; 3. Corrosion reducing clamping force.

1. Pair exclusively with matching UNC screws; 2. Use lock washers for anti-loosening; 3. Inspect and retighten monthly.

7

American standard (item 19)

Bolt：3/8-16UNC-2A×110

Alloy steel 40Cr (quenched and tempered, surface zinc-plated)

1. Fatigue fracture from long-term vibration; 2. Thread corrosion in harsh environments; 3. Shear failure from uneven torque.

1. Torque to 45-50N·m (compliant with UNC 2A standards); 2. Tighten in diagonal order for uniform force; 3. Replace every 18 months.

8

American standard (item 20)

Nut：3/8-16UNC-2B（SPL）

Carbon steel 10B21 (heat-treated, surface zinc-plated)

1. Thread stripping from over-tightening; 2. Corrosion leading to seized threads; 3. Reduced clamping force from wear.

1. Use torque wrenches to avoid over-force; 2. Clean threads before installation; 3. Replace if thread damage is detected.

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American (item 21)

Screw：5（0.125）-40UNC-2A×8

Alloy steel 40Cr (quenched and tempered, surface zinc-plated)

1. Thread damage from cross-threading; 2. Fatigue from vibration; 3. Corrosion in humid environments.

1. Use precision tools for installation to align threads; 2. Torque to 3-5N·m; 3. Replace if rust or thread wear is severe.

1

GH3101-28.08

Lock spring

Alloy spring steel 50CrVA (heat-treated for high elasticity and fatigue resistance)

1. Fatigue deformation from repeated pressure cycles; 2. Corrosion leading to reduced elasticity; 3. Damage from improper assembly.

1. Inspect spring elasticity every 6 months; 2. Avoid over-compression during installation; 3. Replace if deformation or corrosion is detected.

2

GH3101-28.10

Plate, shear pin

Carbon steel 45# (heat-treated for precise shear strength)

1. Wear from friction with shear pin; 2. Deformation from uneven pressure; 3. Corrosion leading to reduced shear resistance.

1. Ensure proper fit with shear pin to distribute force; 2. Inspect for deformation quarterly; 3. Replace if corrosion affects structural strength.

3

GH3101-28.11

Shear pin

Alloy steel 35CrMo (heat-treated to meet specified shear force standards)

1. Shear failure from overpressure (designated safety function); 2. Fatigue from repeated pressure fluctuations; 3. Corrosion leading to premature failure.

1. Replace immediately after shear failure; 2. Use only OEM-matched pins to ensure correct shear force; 3. Inspect for corrosion monthly.

1

Are these parts compatible with other relieve valve models or mud pumps?

No. All parts are custom-designed for the GH3101-28.00A JA-3 relieve valve and Sichuan Honghua HHF-1000 mud pump. Thread specifications (UNC) and dimensions are exclusive to this match, so misuse may cause safety failures.

2

How often should critical safety components like the shear pin and lock spring be replaced?

Replace the shear pin immediately after shear failure; replace the lock spring every 12 months (or sooner if fatigue is detected). For harsh environments with frequent pressure fluctuations, shorten the lock spring replacement cycle to 8 months.

3

What standards apply to the fasteners and pins, and why is compliance important?

Fasteners comply with American UNC standards; the 4×26 pin complies with GB/T91-1986. Compliance ensures precise fit, reliable clamping force, and consistent shear/load-bearing performance—critical for preventing valve failure and ensuring pump safety.