PARKER HANNIFIN GL-4A Nos Aircraft Bleeder Valve 4820-00-673-4685

( Brand: Parker Hannifin ), ( Manufacturer Part Number: GL-4A ), ( Part Type: Valve )

Review PARKER HANNIFIN Nos Aircraft Bleeder Valve Pn

The Parker Hannifin GL-4A NOS (New Old Stock) Aircraft Bleeder Valve, model number 4820-00-673-4685, is a crucial component in the aviation industry designed for effective and safe aircraft fuel system purging. This valve is manufactured by Parker Hannifin, a leading global provider of motion and control technologies.

The GL-4A NOS Aircraft Bleeder Valve is engineered to meet the stringent requirements of aviation applications. It is made from high-quality materials that ensure durability, reliability, and resistance to harsh environments. The valve body is constructed from anodized aluminum, which provides excellent corrosion resistance, while the internal components are made from stainless steel to ensure longevity.

This bleeder valve is designed to be used in both wing and fuselage fuel systems. It features a unique, patent-pending design that allows for easy installation and removal, as well as a built-in filter screen that helps prevent debris and contaminants from entering the fuel system. The valve is also equipped with a vented cap that allows for easy venting during installation and maintenance.

The GL-4A NOS Aircraft Bleeder Valve is easy to operate and requires minimal maintenance. It operates by allowing air to escape while fuel remains in the system, ensuring that all air bubbles are purged from the fuel lines. This helps improve fuel system efficiency, reduce fuel consumption, and prevent potential engine damage caused by air pockets.

The Parker Hannifin GL-4A NOS Aircraft Bleeder Valve, model number 4820-00-673-4685, is a critical component for maintaining the safety and performance of aviation fuel systems. With its high-quality construction, reliable operation, and easy installation, it is an essential tool for aviation maintenance professionals. Whether you are performing routine maintenance or troubleshooting fuel system issues, the GL-4A NOS Aircraft Bleeder Valve is the ideal solution for ensuring the safe and efficient operation of your aircraft fuel system.

Parker Hannifin GL-4A NOS Aircraft Bleeder Valve (4820-00-673-4685): A Comprehensive Analysis

a. Authenticity: New Old Stock (NOS) items, such as this Parker Hannifin valve, are original components that have been newly manufactured and have been stored in a controlled environment since then. This ensures that the valve is in its original condition and has not been subjected to wear and tear or the effects of environmental factors.

b. Reliability: Parker Hannifin is a reputable and reliable manufacturer of aircraft components. The GL-4A bleeder valve is designed to meet the highest standards of quality and performance.

c. Availability: NOS items, like this valve, can be a good option for those who need hard-to-find or obsolete parts. Since the valve is still new, it can be a better alternative to reconditioned or used parts.

d. Consistent Performance: NOS items maintain their original specifications and performance characteristics, ensuring that the valve will function as intended in an aircraft environment.

a. Cost: New Old Stock items, especially those from reputable manufacturers like Parker Hannifin, can be more expensive than used or reconditioned parts. The cost difference may be significant, depending on the availability and demand for the specific part.

b. Limited Use: NOS items are typically intended for specific applications, and the Parker Hannifin GL-4A bleeder valve is no exception. It is designed for use in aircraft, and attempting to use it in a different context could lead to safety concerns or other issues.

The decision to buy the Parker Hannifin GL-4A NOS Aircraft Bleeder Valve (4820-00-673-4685) depends on your specific needs and circumstances. If you require a high-performance, reliable, and authentic component for an aircraft application, and the cost is within your budget, then purchasing this NOS valve may be an excellent choice. However, if you are looking for a more cost-effective option, or if the valve is intended for use outside of an aircraft application, you may want to consider other alternatives, such as used or reconditioned parts.

For those in need of a new and authentic Parker Hannifin GL-4A aircraft bleeder valve, purchasing the NOS (New Old Stock) item (4820-00-673-4685) is a recommended option. This valve is guaranteed to meet the highest standards of quality and performance, ensuring safe and effective operation in an aircraft environment. However, it is essential to consider the cost and the specific application before making the final decision.

Details:

GL4 56529 A 2/5 ZZ. V5009-100 26337 A 2/3 x. GL4 26337 A 9/5 ZZ. LOC F1-A1N-B2-S4-C6: NOS USGI Surplus.

part #: gl4a prices

• $28.79-$79.99

specifications aviationpar:

• brand: Parker Hannifin
• mpn: Gl-4a
• part type: Valve

payments aviationpar:

• wallet: Apple-pay
• other
• credit card: Diners-club

returns aviationpar:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

offer aviationpar:

• best offers: True
• availability: In Stock
• quantity: 2
• started: May 16, 2026
• options: Ship-to-home
• sold: 0

seller aviationpar:

• city: Ogden, Utah
• # reviews: 14165
• rating: 98.6%

general aviationpar:

• Parts Accessories > Aviation Parts Accessories > Parts
• condition: New

shipping aviationpar:

• carrier: USPS, FedEx
• type: Calculated
• transit: 5-11 Days
• cost: $13.05
• class: Expedited, Economy, Standard
• service: USPS Priority Mail, FedEx Ground Economy, USPS Ground Advantage

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