Fuel Cell Nitrogen Purge Valve HSPQF Series 5-300kW Response Under 10ms 15 Million Cycle Life

Fuel Cell Nitrogen Purge Valve HSPQF Series for 5~300kW Systems Response Time <=10ms Life >=15 Million Cycles Fast Cold-Start Opening IP67 Protection

Quick Detail:

• Nitrogen purge valve (exhaust valve/tailpipe valve) developed for the hydrogen path of proton exchange membrane fuel cell (PEMFC)
• Core function: periodically and quantitatively discharges accumulated nitrogen and other impurity gases in the hydrogen path, maintaining hydrogen concentration and ensuring system efficiency
• Applicable power range: 5~300kW (covering passenger vehicles, commercial vehicles, stationary power stations)
• Cold-start advantage: compared with the heated drain valve, which needs heating before opening, the nitrogen purge valve can open quickly to ensure the hydrogen concentration in the hydrogen path, facilitating fast cold start
• Rated voltage: 24VDC; normal working voltage range: 18~32VDC
• Allowed gas media: H2 (with a small amount of He, N2, water vapor)
• Inlet working pressure range: 60~360kPa(a)@H2
• Maximum response time: <=10ms (fully open)
• Solenoid valve bore: 2.5mm / 3.0mm / 3.5mm / 4.0mm / 4.5mm / 5.0mm (optional)
• Starting current: <=2A; Solenoid coil resistance: 11 Ohm / 25 Ohm / 30 Ohm (optional)
• Open/close cycles: >=15 million; Life: >=25000 hours; Protection class: IP67

Description:

In a fuel cell system, during the recirculation of hydrogen in the hydrogen path (anode side), nitrogen from the air path that permeates through the proton exchange membrane gradually accumulates on the anode side. As the system runs for a long time, the nitrogen concentration in the hydrogen path becomes higher and higher, diluting the hydrogen concentration and leading to degraded stack performance and reduced system efficiency. At this point the nitrogen purge valve (also called exhaust valve or tailpipe valve) is needed to periodically and quantitatively discharge the mixed gas of hydrogen and nitrogen and replenish high-concentration hydrogen, keeping the hydrogen content in the hydrogen path at a relatively high level and ensuring the operating efficiency of the fuel cell system.

In a cold-start scenario, ice may form in the hydrogen path. The heated drain solenoid valve needs heating to melt the ice before it can open and cannot act immediately. The nitrogen purge valve, however, uses the solenoid valve principle and requires no heating wait; it can open quickly during cold start to promptly discharge the accumulated nitrogen in the hydrogen path, ensuring the hydrogen concentration and facilitating a successful fast cold start of the fuel cell system.

In addition, the nitrogen purge valve can also be used to purge the hydrogen path before the fuel cell system shuts down, discharging residual hydrogen and impurity gases to improve system safety.

The HSPQF series nitrogen purge valve is a solenoid valve product developed specifically for the fuel cell hydrogen path. It uses the solenoid valve principle, controlling the opening and closing of the valve spool through PWM or switch signals to achieve precise control of the exhaust volume. Core highlights include:

Fast response: the maximum response time is only <=10ms (fully open), able to respond quickly to system control commands and precisely control the exhaust volume.

Ultra-long life and high reliability: the HSPQF series nitrogen purge valve has >=15 million open/close cycles and a life of >=25000 hours. It uses high-performance solenoid coils and wear-resistant sealing materials, ensuring long-term reliable operation under frequent switching conditions.

Multiple bore options: the solenoid valve bore is available in 2.5mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm and 5.0mm to match different power stack systems.

High protection class: IP67, meeting harsh vehicle environment requirements.

Specifications:

Electrical / Optical Characteristics (Ta=25C +/-3C). See product specification image.

Applications:

This product is widely used in the hydrogen path (anode side) of various proton exchange membrane fuel cell (PEMFC) systems, specifically including:

• Hydrogen fuel commercial vehicles (heavy trucks, city buses, logistics vehicles, cold-chain logistics vehicles)
• Hydrogen fuel passenger vehicles (sedans, SUVs)
• Stationary fuel cell power stations (backup power, distributed energy systems)
• Hydrogen fuel cell ships
• Fuel cell forklifts and port material handling equipment
• Fuel cell system test benches

Company Advantages:

Shanghai Yibaijia Hydrogen Energy Technology Co., Ltd., as a professional hydrogen energy parts supply platform, distributes the HSPQF series nitrogen purge valves (exhaust valve/tailpipe valve) dedicated to fuel cells. The HSPQF series has a response time of <=10ms, open/close cycles >=15 million, life >=25000 hours, protection class IP67, adapts to 5~300kW systems, and offers bores of 2.5~5.0mm. The company team has more than 10 years of hydrogen energy industry experience and can provide full-process technical support from product selection and system matching to installation.

FAQ

Q1: Can you provide samples for testing?
A: Yes, we support sample orders for vehicle installation testing and performance verification, and also accept mixed-model sample orders.

Q2: What is the delivery lead time?
A: Sample orders usually take 5-7 working days; bulk orders (depending on order quantity) generally take 15-30 working days.

Q3: Is there a minimum order quantity (MOQ) limit?
A: There is no strict MOQ limit; 10-piece sample trial orders are supported, and bulk order prices are more favorable.

Q4: Why does a fuel cell system need a nitrogen purge valve (exhaust valve)?
A: After the fuel cell system runs for a long time, nitrogen permeating through the proton exchange membrane gradually accumulates on the hydrogen path (anode side), causing a decrease in hydrogen concentration and system efficiency. The role of the nitrogen purge valve is to periodically and quantitatively discharge the mixed gas of hydrogen and nitrogen and replenish high-concentration hydrogen, keeping the hydrogen content in the hydrogen path at a relatively high level and ensuring the operating efficiency of the fuel cell system.

Q5: What role does the nitrogen purge valve play during cold start?
A: During cold start, the heated drain solenoid valve needs heating to melt the ice before it can open and cannot act immediately. The nitrogen purge valve, however, uses the solenoid valve principle and requires no heating wait; it can open quickly to promptly discharge nitrogen, ensuring the hydrogen concentration and facilitating a successful fast cold start of the fuel cell system.

Q6: What bores are available for the nitrogen purge valve?
A: The solenoid valve bore is available in 2.5mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm and 5.0mm.

Q7: What is the service life of the nitrogen purge valve?
A: Open/close cycles >=15 million, life >=25000 hours.

Q8: What is the protection class of the nitrogen purge valve?
A: Protection class IP67, meeting harsh vehicle environment requirements.

Q9: How to handle product failures?
A: We implement a strict quality control system, with an out-of-factory defect rate below 0.2%. During the warranty period, small batches of defective products will be replaced with new ones in the next order; batch quality problems will be negotiated for repair or replacement to ensure customer rights.