NB800M.27.00 KB-45 Pulsation Dampener

1

NB800M.27.01, R39

Flexible graphite composite with metal reinforcement, high pressure resistance (up to 30MPa), temperature resistance (-200℃~450℃), excellent compression resilience, suitable for high-pressure fluid sealing in pulsation dampeners.

1. Over-compression leading to loss of resilience and sealing failure; 2. Aging and brittleness from long-term high-pressure operation; 3. Damage from burrs on joint surfaces during installation.

1. Control installation compression ratio within 20%-30%; 2. Replace every 6-12 months or immediately if aging/cracking is found; 3. Remove burrs on joint surfaces before assembly.

1

NB800M.27.02

304 stainless steel, precision machining, thread anti-seize treatment, good corrosion resistance and high-pressure bearing capacity, compatible with the dampener’s bottom structure.

1. Thread wear or seizure caused by improper disassembly/assembly; 2. Corrosion from long-term contact with corrosive fluid; 3. Deformation from excessive tightening torque.

1. Apply anti-seize agent to threads before installation; 2. Use a torque wrench (35-45N·m) to avoid over-tightening; 3. Regularly inspect for corrosion and clean threads.

1

NB800M.27.03.00

Nitrile rubber (NBR 75) with fabric reinforcement, pressure resistance up to 25MPa, temperature resistance (-30℃~120℃), good oil resistance and aging resistance, tailored for pulsation dampening in industrial fluid systems.

1. Fatigue damage from long-term repeated pressure pulsations; 2. Aging and hardening from high-temperature/high-pressure operation; 3. Damage from contact with incompatible chemical media.

1. Regularly inspect for bulging/cracking (every 3 months); 2. Avoid exceeding rated pressure/temperature; 3. Ensure compatibility with fluid media to prevent chemical corrosion.

1

NB800M.27.04.00

Q355B carbon steel, integral forging forming, surface epoxy anti-corrosion coating, high structural strength, pressure-bearing capacity up to 30MPa, suitable for high-pressure fluid system protection.

1. Cracking from excessive fluid pressure exceeding rated limits; 2. Corrosion from external environment or internal fluid leakage; 3. Deformation from external impact.

1. Monitor fluid pressure to stay within rated range; 2. Touch up anti-corrosion coating if damaged; 3. Install protective barriers to avoid external impact.

1

NB800M.27.05

304 stainless steel, precision machining, surface polishing, good corrosion resistance and sealing performance, compatible with the dampener shell assembly.

1. Sealing surface wear from frequent disassembly; 2. Deformation from uneven installation torque; 3. Corrosion from harsh industrial environments.

1. Minimize unnecessary disassembly; 2. Use a torque wrench for uniform tightening (40-50N·m); 3. Regularly clean and inspect the sealing surface for scratches.

1

JZR3-L8, Xinhua hydraulic device, Fenghua

Valve body: 304 stainless steel; Valve core: hardened alloy steel; Seal: NBR rubber, pressure resistance up to 25MPa, suitable for one-way fluid control in hydraulic systems.

1. Valve core jamming from impurity accumulation; 2. Seal wear leading to leakage; 3. Fatigue damage from frequent backflow impact.

1. Regularly clean the valve body to remove impurities; 2. Inspect seals every 6 months and replace if worn; 3. Avoid sudden pressure spikes to reduce valve core impact.

1

NB800M.27.06.00

304 stainless steel, precision stamping and machining, good structural stability and corrosion resistance, compatible with Y-60 shock-proof pressure gauges.

1. Deformation from external impact; 2. Thread wear from repeated pressure gauge disassembly; 3. Corrosion from humid industrial environments.

1. Avoid collision with the cover during operation; 2. Minimize pressure gauge disassembly; 3. Apply anti-rust agent to threads regularly.

1

NB800M.27.07, NPT1/4

316L stainless steel, precision thread machining, excellent corrosion resistance and high-pressure bearing capacity, suitable for NPT1/4 standard pipe connections.

1. Thread wear from repeated disassembly/assembly; 2. Leakage from improper thread sealing; 3. Fatigue damage from pipeline vibration.

1. Apply thread sealant during installation to reduce wear; 2. Avoid over-tightening (torque: 25-35N·m); 3. Install shock absorbers near the connector to reduce vibration.

1

Y-60, 0～25MPa（0～3630psi）, Double Scale Shock Proof Pressure Gauge

Case: Stainless steel; Dial: Aluminum alloy; Movement: Copper alloy; Shock-proof filling: Silicone oil, accuracy grade 1.6, suitable for high-pressure fluid system pressure monitoring.

1. Dial damage from external impact; 2. Oil leakage leading to loss of shock-proof performance; 3. Internal component wear from excessive pressure fluctuations.

1. Install a protective cover to avoid impact; 2. Check for oil leakage regularly and refill silicone oil if needed; 3. Avoid exceeding the rated pressure range.

1

NB800M.27.08

65Mn spring steel, heat-treated for elasticity, surface galvanized for anti-rust, high pressure resistance, compatible with the dampener’s fastening bolts.

1. Deformation from excessive bolt pressure; 2. Rust from humid environments leading to loss of elasticity; 3. Wear from friction during bolt tightening.

1. Do not reuse deformed washers; 2. Replace if rust is found; 3. Ensure correct alignment with bolts during installation.

1

NB800M.27.09, NPT1/4

316L stainless steel, integral forging, precision thread machining, excellent corrosion resistance and structural strength, suitable for NPT1/4 three-way pipe connections.

1. Joint leakage from improper thread sealing; 2. Structural deformation from uneven pressure distribution; 3. Thread wear from repeated disassembly.

1. Apply thread sealant during installation; 2. Ensure uniform fluid pressure in all branches; 3. Minimize unnecessary disassembly.

1

NB800M.27.10.00

Valve body: 304 stainless steel; Valve core: PTFE; Seal: NBR rubber, pressure resistance up to 25MPa, suitable for air discharge in high-pressure fluid systems.

1. Valve core jamming from impurity accumulation; 2. Seal wear leading to air/fluid leakage; 3. Damage from excessive opening/closing force.

1. Regularly clean the valve body to remove impurities; 2. Inspect seals every 6 months; 3. Operate gently to avoid excessive force on the valve core.

1

NB800M.27.11.00

Inner tube: NBR rubber; Reinforcement layer: Polyester fiber; Outer layer: Chloroprene rubber, pressure resistance up to 25MPa, good flexibility and oil resistance, tailored for dampener fluid conveying.

1. Aging and cracking from long-term high-temperature/high-pressure operation; 2. Abrasion from contact with sharp objects; 3. Damage from excessive bending/twisting.

1. Avoid contact with sharp objects; 2. Do not exceed the maximum bending radius during installation; 3. Replace every 12 months or if aging/cracking is found.

1

Can I replace the JZR3-L8 check valve with other brands?

It is not recommended. The JZR3-L8 check valve (Xinhua Hydraulic) is tailored for the NB800M.27.00 dampener’s pressure and flow requirements. Other brands may have mismatched specifications, leading to backflow, pressure loss, or system damage.

2

How often should the air rubber (NB800M.27.03.00) be replaced?

Under normal working conditions (0-25MPa, -30℃~120℃), replace every 12 months. For harsh environments with frequent pressure pulsations, shorten the cycle to 6-8 months and inspect for damage every 3 months.

3

Why is a shock-proof pressure gauge required for the dampener?

The dampener operates in high-pressure pulsation environments; a shock-proof gauge (filled with silicone oil) resists vibration damage, maintains reading accuracy, and avoids internal component wear—critical for real-time monitoring of fluid pressure and dampener performance.