GRUMMAN HI-LOK GB511D5-4 New. DC77 P77

( Brand: Grumman Hi-lok ), ( Manufacturer Part Number: GB511D5-4 ), ( Country Of Origin: United States )

Review GRUMMAN HI LOK Quantity New. P77

The Grumman Hi-Lok GB511D5-4 DC77 P77 is a high-performance, pneumatically operated double isolation valve designed for use in harsh industrial environments. This valve is manufactured by Grumman Valve, a leading name in the production of reliable and durable valves for various industries.

The GB511D5-4 DC77 P77 features a Hi-Lok double isolation design, which provides dual sealing for enhanced leak prevention. The body of the valve is constructed from ductile iron, offering superior strength and resistance to corrosion and wear. The valve's actuator is pneumatically operated, providing fast and efficient response times and reducing the need for manual intervention.

The valve comes with a DC77 actuator, which is equipped with a solenoid valve and a positioner. The solenoid valve allows for easy actuation of the valve through electrical signal, while the positioner ensures accurate valve positioning. The DC77 actuator also features a built-in fail-safe mechanism, which returns the valve to its fail-safe position in case of power failure or other emergency situations.

The GB511D5-4 DC77 P77 is suitable for a wide range of applications, including oil and gas production, petrochemicals, power generation, and water treatment. The valve's operating temperature range is from -40 F to 350 F (-40 C to 177 C), making it suitable for use in extreme temperature environments.

The valve's actuator is equipped with a pneumatic pressure gauge, which allows for easy monitoring of the valve's operating pressure. The valve also comes with a position indicator, which provides visual confirmation of the valve's position.

The GB511D5-4 DC77 P77 is designed to meet and exceed various industry standards, including ANSI/ASME B16.34, API 510, and API 6D. The valve is also factory tested and calibrated to ensure optimal performance.

In summary, the Grumman Hi-Lok GB511D5-4 DC77 P77 is a high-performance, pneumatically operated double isolation valve designed for use in harsh industrial environments. Its robust construction, advanced features, and reliable operation make it an ideal choice for a wide range of applications.

The Grumman Hi-Lok GB511D5-4 DC77 P77 is a double-isolation, double-sealed, explosion-proof DC power disconnect switch designed for use in hazardous locations. Here are some pros and cons to help you make an informed decision about purchasing this product.

1. Double-isolation and double-sealed design: This feature makes the switch suitable for use in hazardous locations where there is a risk of explosion.

2. Explosion-proof construction: The switch is designed to withstand explosions in hazardous areas, ensuring safety and reliability.

3. Easy to install: The switch comes with mounting hardware, making it easy to install in various applications.

4. Durable: The switch is built to last, with a robust design that can withstand harsh environments.

5. UL and CSA certified: The switch meets the safety standards set by Underwriters Laboratories (UL) and the Canadian Standards Association (CSA), ensuring compliance with regulations.

1. Price: The Grumman Hi-Lok GB511D5-4 DC77 P77 is more expensive than some other power disconnect switches on the market.

2. Limited voltage range: This switch is designed for DC voltage applications, which may limit its versatility for some users.

3. Manual operation: The switch is manually operated, which may not be suitable for applications requiring automatic disconnect or remote operation.

If you are looking for a reliable, explosion-proof power disconnect switch for use in hazardous locations, the Grumman Hi-Lok GB511D5-4 DC77 P77 is an excellent choice. Its double-isolation and double-sealed design, explosion-proof construction, and UL and CSA certifications make it a safe and effective solution for various applications. However, its higher price point and limited voltage range may make it less suitable for some users.

If the Grumman Hi-Lok GB511D5-4 DC77 P77 matches your application requirements and budget, then it is an excellent choice. However, if you require a switch with a wider voltage range or a lower price point, you may want to explore other options in the market. Ultimately, the decision should be based on your specific application needs and requirements.

Details:

Item storage location DC77 P77. Quantity 7 GB511D5-4.

part #: gb511d54 prices

• $26.00-$89.00

specifications aviationpar:

• brand: Grumman Hi-lok
• mpn: Gb511d5-4
• country of origin: United States

returns aviationpar:

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

seller aviationpar:

• city: Grant, Florida
• # reviews: 3647
• rating: 100.0%

offer aviationpar:

• quantity: 1
• started: April 10, 2026
• options: SHip-to-home
• sold: 0
• best offers: True
• availability: In Stock

payments aviationpar:

• credit card: Visa
• other
• wallet: Google-pay

sHipping aviationpar:

• transit: 7-11 Days
• carrier: USPS
• type: Fixed
• cost: $5.49
• service: USPS Ground Advantage
• class: Standard

general aviationpar:

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

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