• 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.
Key Features
• Boiler Feed Specialist: Engineered to replace Flowserve HSH or similar high-pressure cartridge seals used in boiler feed water service.
• Hot Water Handling: 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.
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 part 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 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 seal.
Testimonials
These seals saved our boiler feed pumps. The integrated pumping ring moves a lot of water through the cooler.
—Power Plant Supervisor, India
FAQs about Metal Bellows Seals for High Temperature Pumps
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.
Our company is specialized in the production of sealing materials, mechanical seals , cartridge seals.
E-mail: gechacha@aliyun.com
Mobile: +86-18758835650
WhatsApp: +86-18758835650
Add: No8-2, Jinsha road Yuelin Street, Fenghua District, Ningbo, Zhejiang
