High-Quality Railway Cast Iron Pump Covers: Durability, Precision, and Performance for Railway Systems

Overview of Railway Cast Iron Pump Cover

Railway cast iron pump covers are core sealing components designed specifically for railway vehicles (such as diesel locomotives, electric locomotives, and EMUs) and railway infrastructure (such as maintenance bases and station water supply systems). Made from high-strength gray cast iron (HT250/HT300) or ductile iron (QT450) through a precision casting process, they offer excellent pressure resistance, corrosion resistance, and shock absorption. These covers strictly adhere to international railway industry standards (such as EN 15085 and IRIS) and are suitable for critical equipment such as fuel pumps, cooling water pumps, and hydraulic pumps. They effectively prevent media leakage, protect internal components, and ensure stable operation of railway systems under complex operating conditions.

Technical Parameters of Railway Cast Iron Pump Cover

Parameters	Detailed Specifications
Material	Gray cast iron (HT250/HT300), ductile iron (QT450)
Applicable Media	Fuel, lubricating oil, coolant, hydraulic oil, water, and mildly corrosive liquids
Operating Pressure Range	0.6-4.0 MPa (High-pressure models up to 10 MPa available on request)
Operating Temperature Range	-40°C to +200°C (extended to +250°C for special conditions)
Seal Type	Mechanical seal, O-ring seal, packing seal (optional depending on operating conditions)
Connections	Flange (DN25-DN200), Threaded (G1/2″-G4″), Quick-Release Clamp
Surface Treatment	Epoxy Coating, Dacromet Anti-Corrosion, Phosphate Treatment (Rust Resistance ≥ ISO 9227:2017)
Protection Rating	IP65/IP67 (Dustproof and Waterproof)
Weight Range	Customizable

Features of Railway Cast Iron Pump Cover

High Strength and Durability

• The spheroidized cast iron (QT450) increases its tensile strength by 30%, allowing it to withstand railway vibration and high-pressure media circulation, reducing the risk of deformation.
• An optimized internal rib design enhances the pump cover’s rigidity and prevents fatigue cracking caused by pressure fluctuations.

Excellent Sealing Performance

• An integrated double mechanical seal achieves a dynamic leakage rate of ≤0.5 mL/h, meeting railway safety standards (such as GB/T 34571-2017).
• A pre-designed quick-change seal slot allows maintenance without disassembling the pump body, minimizing downtime.

Environmental Adaptability

• The surface coating has passed the salt spray test (≥1000 hours), making it suitable for coastal, high-humidity, or industrially polluted environments.
• The low-temperature model utilizes an antifreeze formula to ensure seal flexibility at -40°C, preventing brittle fracture.

Lightweight and Modular Design

• The ductile iron model is 15% lighter than traditional gray cast iron, reducing train energy consumption.
• Standardized flange interfaces enable interchangeability between pump bodies from multiple brands, simplifying spare parts management.

Application of Railway Cast Iron Pump Cover

Diesel and Electric Locomotives

• Fuel Pump Cover: Seals diesel or gas to prevent leakage into high-temperature engine areas, suitable for models such as GE and Siemens.
• Cooling Water Pump Cover: Protects the water pump from corrosion caused by ethylene glycol coolant, withstanding temperature cycles from -40°C to +120°C.
• Hydraulic Pump Cover: Used in the braking system or pantograph lifting mechanism, ensures zero hydraulic oil leakage to maintain system pressure.

EMU and Urban Rail Transit Vehicles

• Main Cooling Pump Cover: Integrated exhaust valve design balances steam pressure during high-speed operation, preventing cavitation damage.
• Air Conditioning System Water Pump Cover: Features a food-grade coating to meet train drinking water transport hygiene standards.

Railway Infrastructure and Maintenance Bases

• Lubricating Oil Pump Cover: Used in equipment maintenance stations, withstands frequent starts and stops and the impact of high-pressure lubricating oil.
• Sewage Treatment Pump Cover: Corrosion-resistant design, suitable for wastewater discharge containing particulate matter.
• Station Water Supply Pump Cover: IP67 protection rating, prevents rainwater intrusion and motor short circuits.

Special Environment Routes

• Altitude and Cold Regions: Low-temperature ductile iron models are used to prevent seal hardening and failure.
• Desert Routes: Sand filters are installed to reduce sand intrusion into the pump body.
• Seismic Zones: Shock-absorbing rubber pads are designed to absorb the impact of earthquake waves on the pump cover.

Package of Railway Cast Iron Pump Cover

Polybag + Carton box+ Wooden case/Pallet, according to customer’s request

Company Profile

Luoyang Fonyo Heavy Industries Co., Ltd. was founded in 1998, covers an area of 72,600㎡, with more than 300 employees, 32 technicians, including 5 senior engineers, 11 assistant engineers, and 16 technicians. It has been rated as Luoyang Engineering Technology Center, Luoyang Technology R&D Center, and National High-tech Enterprise for many times.
Our production capacity is 30,000 tons per year. Currently, we mainly produce cast steel, cast iron (gray iron, ductile iron, etc.), processing of finished product and component assembly for locomotive,railcar,high-speed trains, mining equipment,wind power,etc.Our products have been exported to Russia, the United States, Germany, Argentina, Japan, France, South Africa,Italy and other countries.

FAQS

Q1: Are you a manufacturer or trading company?
A: We are a manufacturer. Our company was founded in 1998, with nearly 30 years in casting industry, a total area of 72,600㎡, with a factory building area of 51,000㎡.
Q2. What are your main products?
A: We primarily focus on steel casting, iron casting, finished product machining, and component assembly production for locomotive, railcar, high-speed trains, mining equipment, wind power,etc.
Q3: How precision can you produce casting parts?
A: We have the capability of producing casting parts with different casting processes. The production is strictly comply with ISO 9001, ISO 14001 and ISO45001,EN15085, IRIS.
Q4. Can you produce according to the samples?
 Yes, we can produce by your samples or technical drawings. We can build drawings for you after we get your samples too.
Q5: How do you do Quality Control before delivery?
A: Quality inspection is a very important factor to guarantee the quality of steel casting parts. We follow 3 times of inspection during the whole production process. And we will provide material testing report, dimensional testing report, and mechanical properties testing report to our clients before delivery.

It you are interested in any products, please feel free to contact us.
Contact: Stella Liu
Email:sales@railwaypart.com
WhatsApp: +86-152-3615-7103