Packages

API seal support plans are standardized configurations defined under API guidelines (API 682) for mechanical seal flushing and cooling. These plans ensure:

• reliable seal performance
• safe operation in hazardous services
• reduced seal failure rate
• consistent cooling/flush arrangements

Petronash supplies systems in line with plans such as Plan 21, 32, 52, 53A, 53B, 72 and more.

API Plan 21 is a seal flush plan where seal chamber fluid is circulated through a cooler and returned back. It is used to:

• reduce seal chamber temperature
• improve viscosity stability
• extend seal life in hot services

Plan 21 is widely used in refinery services where pump fluid temperature needs to be reduced near the seal.

API Plan 32 uses an external flush fluid injected into the seal chamber. It is recommended when:

• process fluid contains solids or contaminants
• process fluid is not suitable for sealing
• seal faces need clean lubricating fluid

Plan 32 is common in slurry, dirty fluid, or polymerizing services

API Plan 52 is a buffer fluid system used for unpressurized dual seals. It provides:

• cooling and lubrication to the seal
• containment of leakage
• improved safety for hazardous process fluids

Plan 52 systems typically include a seal pot/reservoir with instrumentation.

Both are used for pressurized dual seals, but their pressurization method differs:

API Plan 53A

• pressurized barrier fluid using a bladder accumulator or external pressurizing system
• easier operation and common in many refinery applications

API Plan 53B

• pressurized barrier fluid maintained using accumulator (bladder/piston type)
• better stability for certain operating conditions
• suitable for more demanding or fluctuating pressures

Petronash has strong expertise in supplying 53B systems with in-house accumulator manufacturing.

In API Plan 53B, the accumulator helps maintain stable barrier fluid pressure. It:

• compensates pressure fluctuations
• ensures consistent seal face lubrication
• supports system integrity during pump transients
• reduces chance of seal failure in critical services

Petronash manufactures the required accumulators in-house for full performance control

API Plan 72 is generally used for gas seal support systems. It supplies clean gas to the seal chamber for:

• containment of hazardous fluids
• sealing performance for volatile services
• safer operation in refinery and petrochemical facilities

Plan 72 is used with dry gas seals and related seal arrangements

Yes. Petronash manufactures seal cooling/support systems with stainless steel piping construction as per:
API 682 3rd or 4th edition

This ensures standardization, safety, and compatibility with API classified pumps and refinery requirements

Petronash systems offer:

• stainless steel piping for corrosion resistance
• sturdy design with low centre of gravity
• robust packaging for plant use
• painting suitable for both onshore and offshore installation

This improves service life and reliability in harsh environments.

Yes. Petronash can supply systems with optional certifications such as:

• ASME U Stamp

• PED certification

Certification depends on system design, project specification, and destination regulatory compliance.

Petronash mechanical seal cooling systems are used for:

• API classified centrifugal pumps
• refinery and petrochemical process pumps
• critical services where temperature control and seal reliability are essential
• hazardous/volatile fluids requiring dual seals and barrier/buffer fluid systems

These systems are critical for plant safety and uptime.

Petronash is trusted because we provide:

• complete API plan-based systems (21, 32, 52, 53A, 53B, 72, etc.)
• stainless steel piping as per API 682
• strong expertise in accumulator-based 53B systems
• robust mechanical design suitable for onshore and offshore
• optional ASME / PED compliance

We focus on reliability, safety, and long-term operational performance

Yes. Petronash can design systems as per:

• customer pump datasheet and seal arrangement
• required API plan configuration
• instrumentation and control preferences
• material, painting and skid requirements
• project documentation and inspection requirements

This ensures perfect fitment to site conditions and pump operation.

Yes. Petronash offers complete in-house manufacturing of:

• seal support skid systems
• stainless steel piping assembly
• accumulators required for 53B systems

This reduces dependency on multiple suppliers and ensures consistent system-level quality and performance.