Discharge Five-Way Block Assembly

1

Discharge five-way block assembly

NB004.09.00

Alloy steel (20CrMnTi), quenched and tempered, precision-machined flow channels for high-pressure multi-path fluid distribution

1. Internal wear from abrasive fluid particles; 2. Fatigue cracking from pressure cycles; 3. Corrosion from chemical contaminants.

1. Use filtered fluids to reduce abrasion; 2. Monitor pressure to avoid exceeding rated limits; 3. Conduct annual non-destructive testing for cracks.

2

Discharge five-way block

NB004.09.01

Alloy steel (20CrMnTi), core body of the five-way assembly, integrated flow channels for fluid routing

1. Flow channel wear from fluid scouring; 2. Thread damage from repeated assembly; 3. Stress cracking at channel junctions.

1. Flush channels quarterly to remove debris; 2. Avoid over-tightening connecting parts; 3. Inspect thread integrity before assembly.

3

Welded female union 2”-1502-H

HGHT04.07.01

Stainless steel (316), welded design for high-pressure pipeline connection to the five-way block

1. Weld fatigue from vibration; 2. Corrosion from fluid or environmental moisture; 3. Thread wear from repeated disassembly.

1. Inspect welds for cracks monthly; 2. Apply anti-corrosion coating to welds; 3. Use thread sealant for leak-proofing.

4

Welding neck flange Ⅱ5 1/8×69

NB004.09.05

Carbon steel (A105), welding neck design for secure, high-pressure pipeline connection

1. Sealing surface wear from repeated assembly; 2. Weld cracking from pressure surges; 3. Corrosion from fluid seepage.

1. Clean sealing surfaces before installation; 2. Monitor system pressure to avoid surges; 3. Touch up anti-corrosion coating annually.

5

Welding neck flange I

NB004.09.04

Carbon steel (A105), compatible with flange Ⅱ for uniform pipeline connection to the five-way block

1. Bolt hole deformation from over-tightening; 2. Corrosion of flange body; 3. Sealing failure from surface scratches.

1. Tighten bolts to specified torque; 2. Inspect flange surfaces for scratches; 3. Replace if bolt holes are deformed.

6

Blind flange

NB004.09.02

Carbon steel (A105), for sealing unused ports of the five-way block in high-pressure systems

1. Sealing failure from gasket damage; 2. Corrosion from environmental factors; 3. Deformation from uneven bolt tightening.

1. Replace gaskets during each disassembly; 2. Tighten bolts uniformly; 3. Apply anti-rust grease to flange edges.

1

Gasket ring BX169

ANSI/API Spec 6A-2010

Inconel alloy, metal ring gasket for high-pressure flange sealing (compliant with API 6A-2010)

1. Deformation from over-tightening; 2. Surface damage from debris; 3. Corrosion from chemical fluids.

1. Tighten to API-specified torque; 2. Clean flange surfaces before installation; 3. Verify fluid compatibility.

2

Gasket ring BX152

ANSI/API Spec 6A-2010

Inconel alloy, compatible with BX169 for interchangeable high-pressure sealing

1. Fatigue from pressure cycles; 2. Damage from improper handling; 3. Oxidation from high temperatures.

1. Store in dry, sealed containers; 2. Replace after 2-3 pressure cycles; 3. Avoid direct contact with sharp objects.

3

Gasket ring BX155

ANSI/API Spec 6A-2010

Inconel alloy, specialized for blind flange and five-way block port sealing

1. Sealing failure from uneven bolt tension; 2. Corrosion from moisture; 3. Deformation from thermal expansion.

1. Tighten bolts in a crisscross pattern; 2. Inspect for corrosion monthly; 3. Account for thermal expansion in high-temperature environments.

4

Gasket 1

NB001.27.10

EPDM rubber, for sight window and guard cover sealing

1. Aging from environmental exposure; 2. Cracking from low temperatures; 3. Swelling from incompatible chemicals.

1. Replace every 6-12 months; 2. Avoid contact with harsh chemicals; 3. Protect from freezing temperatures.

5

Gasket 1

HBZ013.27.15.04

Nitrile rubber (NBR), oil-resistant for clamp plate and connecting component sealing

1. Degradation from oil exposure; 2. Wear from repeated compression; 3. Damage from excessive stretching.

1. Use in oil-compatible environments; 2. Avoid stretching during installation; 3. Replace if compressed set exceeds 20%.

6

Gasket 2

NB001.27.13

EPDM rubber, compatible with gasket 1 for interchangeable structural sealing

1. UV-induced aging; 2. Deformation from over-tightening; 3. Wear from vibration-induced friction.

1. Avoid direct sunlight; 2. Tighten to recommended torque; 3. Inspect for wear during routine maintenance.

7

Skeleton oil seal FB40×55×8

GB/T13871

NBR rubber with steel skeleton, for rotating component oil sealing (compliant with GB/T13871)

1. Lip wear from rotational friction; 2. Skeleton corrosion from moisture; 3. Damage from debris entering the seal.

1. Lubricate the lip before installation; 2. Filter oil to remove debris; 3. Replace if oil leakage is detected.

8

Guard seal

NB004.12.09.00

NBR rubber, for guard cover and structural component dust/water sealing

1. Aging from environmental moisture; 2. Damage from mechanical impact; 3. Wear from component movement.

1. Inspect for cracks monthly; 2. Protect from external impact; 3. Replace if sealing integrity is compromised.

9

Seal box

NB004.12.06

Carbon steel (Q235) with anti-corrosion coating, housing for skeleton oil seals

1. Corrosion from moisture/oil; 2. Deformation from impact; 3. Wear from seal movement.

1. Clean oil residues regularly; 2. Apply anti-corrosion coating annually; 3. Inspect for deformation during seal replacement.

10

Gland

NB004.12.05

Carbon steel (Q235), for compressing and securing oil seals in the seal box

1. Thread wear from repeated adjustment; 2. Deformation from over-tightening; 3. Corrosion from environmental factors.

1. Adjust to proper tension (avoid over-tightening); 2. Clean threads before adjustment; 3. Apply anti-rust grease.

1

Stud 3/4-12UN-2A×120

NB1600M.07.02H

Alloy steel (10.9 grade), precision-threaded for high-pressure flange fastening

1. Thread wear from repeated assembly; 2. Fatigue fracture from vibration; 3. Corrosion from fluid seepage.

1. Apply anti-seize agent to threads; 2. Tighten to specified torque; 3. Inspect for thread damage quarterly.

2

Nut 3/4-12UN-2B

NB1600M.07.03H

Alloy steel (10.9 grade), compatible with 3/4-12UN-2A studs

1. Thread stripping from over-tightening; 2. Corrosion leading to locking; 3. Wear from vibration-induced friction.

1. Replace nuts when reusing studs; 2. Clean threads before installation; 3. Match torque with corresponding studs.

3

Stud 11/8-8UN(12UNF)×115

NB1600M.07.04H

Alloy steel (10.9 grade), multi-thread compatible for heavy-duty flange fastening

1. Thread seizure from corrosion; 2. Bending from uneven load; 3. Fatigue from pressure cycles.

1. Clean threads thoroughly before use; 2. Ensure uniform load distribution; 3. Apply anti-corrosion coating to exposed threads.

4

Nut 1 1/8-8UN-2B (SPL)

NB800M.24.06A

Alloy steel (10.9 grade), specialized for 11/8-8UN(12UNF) studs

1. Thread wear from repeated use; 2. Deformation from excessive torque; 3. Corrosion from environmental moisture.

1. Use torque wrenches for precise tightening; 2. Store in dry areas; 3. Replace if threads are damaged.

5

Bolt M12×30

GB/T5782

Alloy steel (8.8 grade), for guard cover and structural component fastening

1. Thread wear from misalignment; 2. Head damage from improper tool use; 3. Fatigue from vibration.

1. Align holes precisely before installation; 2. Use matching hex tools; 3. Tighten to torque (45-50N·m).

6

Bolt M12×35

GB/T5783

Alloy steel (8.8 grade), for connecting plates and supporting component fastening

1. Corrosion from moisture; 2. Thread stripping from over-tightening; 3. Wear from vibration-induced movement.

1. Apply anti-rust grease; 2. Tighten to specified torque; 3. Inspect for corrosion monthly.

7

Bolt M12×20

GB/T5783

Alloy steel (8.8 grade), for light-load structural component fastening

1. Thread wear from repeated disassembly; 2. Fatigue from vibration; 3. Damage from tool misuse.

1. Replace after 3-4 disassembly cycles; 2. Use precision tools; 3. Match with appropriate washers.

8

Socket cap screw M8×20

GB/T70.1

Alloy steel (8.8 grade), precision fastening for small components and covers

1. Head stripping from improper tool use; 2. Thread wear from misalignment; 3. Corrosion from environmental factors.

1. Use matching hex socket tools; 2. Align screws precisely; 3. Store in dry containers when not in use.

9

Washer

NB004.12.07

Carbon steel (Q235), galvanized, for load distribution and bolt/nut protection

1. Corrosion from moisture; 2. Deformation from excessive pressure; 3. Wear from friction with nuts.

1. Replace if rusted or deformed; 2. Match washer size to bolt size; 3. Clean before installation.

1

Guard cover

NB004.12.00

Carbon steel (Q235) with anti-corrosion coating, full protection for the five-way block

1. Corrosion from environmental moisture/chemicals; 2. Deformation from external impact; 3. Wear from vibration.

1. Inspect for impact damage monthly; 2. Touch up anti-corrosion coating annually; 3. Secure properly to reduce vibration.

2

Guard cover plate

NB004.12.02

Carbon steel (Q235), auxiliary plate for guard cover reinforcement

1. Corrosion from moisture; 2. Fatigue from vibration; 3. Damage from improper installation.

1. Clean surface regularly; 2. Ensure secure attachment to the guard cover; 3. Replace if bent or cracked.

3

Guard cover frame

NB001.27.02

Carbon steel (Q235), structural frame for guard cover assembly

1. Deformation from impact; 2. Weld fatigue from vibration; 3. Corrosion from environmental factors.

1. Protect from heavy impacts; 2. Inspect welds for cracks quarterly; 3. Apply anti-rust coating.

4

Guard cover connecting plate

NB004.12.01

Carbon steel (Q235), for connecting guard cover components

1. Bolt hole wear from repeated assembly; 2. Fatigue from vibration; 3. Corrosion from moisture.

1. Replace if bolt holes are elongated; 2. Tighten connecting bolts quarterly; 3. Clean and dry after maintenance.

5

Connecting plate 2

NB004.12.08

Carbon steel (Q235), auxiliary connecting plate for structural components

1. Wear from component movement; 2. Corrosion from fluid residues; 3. Deformation from uneven load.

1. Clean fluid residues promptly; 2. Ensure uniform load distribution; 3. Inspect for deformation monthly.

6

Connecting plate 1

NB004.12.04

Carbon steel (Q235), compatible with connecting plate 2 for structural integration

1. Thread wear from bolt tightening; 2. Fatigue from vibration; 3. Corrosion from environmental moisture.

1. Apply anti-rust grease to threads; 2. Tighten bolts to specified torque; 3. Replace if cracked.

7

Supporting plate

NB004.12.03

Carbon steel (Q235), for supporting the five-way block and auxiliary components

1. Deformation from excessive load; 2. Wear from vibration; 3. Corrosion from moisture.

1. Ensure load capacity matches component weight; 2. Inspect for deformation quarterly; 3. Reinforce in high-vibration areas.

8

Connecting plate

NB004.12.09.03

Carbon steel (Q235), for connecting guard seal and structural components

1. Corrosion from moisture; 2. Bolt hole wear; 3. Fatigue from component movement.

1. Clean and dry after maintenance; 2. Replace if bolt holes are damaged; 3. Tighten bolts regularly.

9

Water retaining plate

NB004.12.09.02

Carbon steel (Q235) with anti-corrosion coating, for preventing water damage to internal components

1. Corrosion from water exposure; 2. Deformation from impact; 3. Wear from vibration.

1. Inspect for water accumulation regularly; 2. Touch up anti-corrosion coating annually; 3. Protect from external impacts.

10

Cover plate

NB001.27.02

Carbon steel (Q235), for sealing openings in guard cover and structural components

1. Corrosion from environmental factors; 2. Sealing failure from gasket damage; 3. Deformation from over-tightening.

1. Replace gaskets during each disassembly; 2. Tighten bolts uniformly; 3. Apply anti-rust grease to edges.

11

Side plate

NB004.12.01

Carbon steel (Q235), auxiliary side plate for guard cover reinforcement

1. Corrosion from moisture; 2. Fatigue from vibration; 3. Damage from improper handling.

1. Store in dry areas when not in use; 2. Inspect for cracks monthly; 3. Secure properly to the guard cover.

12

Clamp plate

NB001.27.12

Carbon steel (Q235), for clamping and securing sealing components

1. Deformation from over-tightening; 2. Corrosion from moisture; 3. Wear from component movement.

1. Tighten to recommended torque; 2. Apply anti-rust coating; 3. Inspect for deformation during maintenance.

13

Clamp plate

HBZ013.27.15.03

Carbon steel (Q235), compatible with NB001.27.12 for interchangeable clamping

1. Wear from repeated clamping; 2. Corrosion from oil or fluid; 3. Damage from external impact.

1. Clean oil/fluid residues regularly; 2. Avoid over-clamping; 3. Protect from heavy impacts.

14

Sight window

NB001.27.11

Tempered glass with metal frame, for visual inspection of internal fluid conditions

1. Glass breakage from impact; 2. Seal failure leading to fogging; 3. Scratching from debris.

1. Protect from external impacts; 2. Replace gaskets if fogging occurs; 3. Clean glass with non-abrasive materials.

1

Shockproof pressure gauge

YK-150, YK-150F; 0-80MPA

Stainless steel (304) case, shockproof mechanism, for high-pressure (0-80MPa) monitoring

1. Gauge damage from excessive pressure; 2. Internal mechanism wear from vibration; 3. Corrosion from environmental moisture.

1. Ensure pressure does not exceed 80MPa; 2. Calibrate quarterly for accuracy; 3. Keep the gauge dry and clean.

2

Holder of pressure gauge

NB004.09.03

Stainless steel (304), for securing the shockproof pressure gauge to the five-way block

1. Thread wear from repeated gauge installation; 2. Corrosion from fluid seepage; 3. Damage from gauge movement.

1. Apply thread sealant during installation; 2. Tighten securely to reduce movement; 3. Inspect for corrosion monthly.

3

Filter screen

NB2200G.25.05.00

Stainless steel (316), fine mesh for filtering debris in high-pressure fluid systems

1. Clogging from debris accumulation; 2. Mesh damage from large particles; 3. Corrosion from chemical fluids.

1. Clean or replace monthly; 2. Use pre-filters to reduce large debris; 3. Verify compatibility with system fluids.

1

Are the BX series gasket rings interchangeable?

No, BX152, BX155, and BX169 gaskets (ANSI/API Spec 6A-2010) have different dimensions, designed for specific flange/port sizes. Using the wrong size causes leakage—always match the gasket to the flange model.

2

How often should the filter screen and skeleton oil seal be maintained?

Clean/replace the NB2200G.25.05.00 filter screen monthly; replace the FB40×55×8 skeleton oil seal every 6-12 months or if oil leakage is detected. This prevents debris buildup and maintains sealing integrity.

3

What torque is recommended for M12 bolts in this assembly?

For M12×20/30/35 bolts (GB/T5782/5783), the recommended torque is 45-50N·m. Over-tightening causes thread damage or component deformation, while under-tightening leads to loosening and leakage.