The flowserve cartridge seal for boiler feed water pump is a pre assembled, high performance sealing solution engineered to withstand the extreme conditions of boiler feed systems. This durable flowserve cartridge seal is specifically designed to handle high-pressure, high-temperature feed water, ensuring reliable containment and pump integrity. As a critical boiler feed water pump mechanical seal, it features robust materials (such as silicon carbide or tungsten carbide faces) and a balanced design to minimize heat generation and face wear, extending service life and reducing maintenance frequency. The cartridge configuration allows for quick, error-free installation, making it a direct, drop-in replacement for OEM flowserve cartridge seals in demanding power generation and industrial steam applications.
Key Features
• Boiler Feed Specialist: Engineered to replace Flowserve HSH or similar high-pressure flowserve cartridge seals used in boiler feed water service.
• Hot Water Handling: Boiler feed water pump mechanical seals are specifically designed to handle low-lubricity, high-pressure hot water (condensate) without face flashing or heat checking.
• High Velocity: Capable of operating at the high shaft speeds typical of multistage boiler feed pumps.
• Cooler Integration: Includes connection ports for API Plan 23, which circulates fluid from the seal chamber through a heat exchanger and back, keeping the faces cool despite high process temps.
• Pumping Ring: An integrated pumping ring drives this cooling circulation loop efficiently.
Technical Specs | Materials | ||
Mediums | Submersible pumps, sewage pumps, applied to the muddy water, sewage water or weakly-corrosive fluids with solid grains. | Stationary Ring | Ceramic/Sic/TC |
Pressure | ≤0.5MPa | Rotary Ring | Carbon/Sic/TC |
Temperature | -20℃ to 100℃ | Secondary Seal | NBR/EPDM/Viton |
Speed | ≤8m/s | Spring and Metal Part | Stainless Steel |
Product Specifications
| D1 (mm) | Size Code | D7 | D8 | L1 | L3 | L4 |
| 14 | 0140 | 30 | 30 | 37 | 5 | 5 |
| 15 | 0150 | 30 | 30 | 37 | 5 | 5 |
| 16 | 0160 | 30 | 30 | 37 | 5 | 5 |
| 20 | 0200 | 38 | 38/44 | 50 | 8/7 | 7 |
| 25 | 0250 | 44 | 44/50 | 51 | 8.5 | 7 |
| 30 | 0300 | 44/50 | 57 | 59 | 8.3 | 9 |
| 35 | 0350 | 54 | 57 | 61 | 9.5 | 8.5 |
| 40 | 0400 | 64 | 70 | 65 | 9 | 10 |
| 45 | 0450 | 66 | 70 | 65 | 9 | 10 |
| 50 | 0500 | 72 | 80 | 69 | 9 | 10 |
Workshop
This workshop is equipped with professional processing equipment and integrated with standardized material warehousing management, enabling a one-stop production process from precision machining to finished product delivery. It ensures boiler feed water pump mechanical seal machining accuracy and production efficiency, meeting various high-specification manufacturing requirements.
Product Research, Development and Testing
Our Product R&D and Testing focuses on optimizing seal performance through advanced simulation and material analysis. All flowserve cartridge seals undergo rigorous trials, including thermal cycling and pressure tests, to ensure durability, minimal leakage, and long service life in demanding industrial environments.
Industry Solutions
Case Study
Power Station: A boiler feed pump experienced seal vaporization (popping noise). We installed this cartridge with Plan 23. The pumping ring circulated fluid through the cooler, dropping face temp by 40°C and stabilizing the boiler feed water pump mechanical seal.
Testimonials
These flowserve cartridge seals saved our boiler feed pumps. The integrated pumping ring moves a lot of water through the cooler.
—Power Plant Supervisor, India
FAQs about Flowserve Mechanical Seal for Boiler Feed Water Pump
Q: Why not use SiC/SiC?
A: For hot water, Carbon vs. Tungsten Carbide or Carbon vs. SiC is often preferred because Carbon has self-lubricating properties that forgive the poor lubricity of hot water. Hard-on-hard faces can generate too much heat.
Q: What makes this Flowserve cartridge seal suitable for boiler feed water pumps?
A: This Flowserve cartridge seal is specifically engineered for high-pressure, high-temperature boiler feed water. It features a balanced design and materials (like silicon carbide faces) that resist the low lubricity and potential for vaporization (flashing) common in this service, ensuring reliable performance in power generation applications.
Q: Can I use this as a direct replacement for my existing Flowserve cartridge seal?
A: Absolutely. This cartridge is manufactured as a direct OEM-equivalent replacement for Flowserve models like the HSH series used in multistage boiler feed pumps. It is a pre-assembled unit designed for drop-in interchangeability, simplifying maintenance.
Our company is specialized in the production of sealing materials, mechanical seals , cartridge seals.
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