Description
GROCO 3/4" NPS/NPT Thru-Hull Fitting | Boat Supply Store
Engineered for demanding marine plumbing, this thru-hull fitting resolves complex connection challenges with its unique NPSM/NPT combination thread, ensuring broad compatibility with various marine-grade fittings and hoses. Fabricated from high-grade #316 stainless steel, it guarantees exceptional resistance to saltwater corrosion, extending service life in aggressive environments like the Gulf Coast. The UL Listed 647B certification confirms its adherence to stringent safety standards, making it a reliable choice for new builds or refits on offshore sportfishing vessels or coastal cruisers.
Key Features
- Unmatched Versatility: NPSM / NPT combination thread allows connection to both pipe thread and straight mechanical threads.
- Superior Corrosion Resistance: Constructed from premium #316 stainless steel for enduring marine environments.
- Certified Safety: UL Listed 647B for verified performance and safety standards.
- Durable Construction: Robust design ensures longevity and structural integrity under pressure.
- Comprehensive Sizing: Available in a range of sizes from 1/2" to 3" to suit diverse applications.
- Watertight Seal: Includes a heavy-duty nut for secure and reliable hull penetration.
- Professional Grade: Engineered for demanding use by boat owners, builders, and technicians.
- Reliable Performance: Ensures a secure and leak-free connection for critical bilge pump or intake lines.
Specifications
| Product Specifications | |
|---|---|
| Thread Type | NPSM / NPT Combination |
| Material | #316 Stainless Steel |
| UL Listing | UL Listed 647B |
| Included | Nut |
| Size Range | 1/2" to 3" |
Who This Is For
Marine boat owners, builders, and maintenance professionals requiring a durable and versatile thru-hull fitting for plumbing applications, particularly those needing compatibility with both NPSM and NPT threaded components. This fitting is essential for ensuring secure and long-lasting hull penetrations in a variety of marine craft.
How It Compares
| Feature | GROCO 3/4" NPS/NPT Thru-Hull Fitting | Competitor |
|---|---|---|
| Thread Type | NPSM / NPT Combination | NPT, NPT |
| Material | #316 Stainless Steel | Bronze, Bronze |
| UL Listed | Yes (647B) | No, No |
Common Concerns Answered
Is the GROCO TH-750-WS fitting more expensive than other options?
While the initial investment for this #316 stainless steel fitting may be higher than basic bronze alternatives, its superior corrosion resistance and extended lifespan in harsh marine environments deliver greater long-term value and reliability, mitigating potential replacement costs and downtime.
Are specific sizes readily available?
Availability can fluctuate based on demand. It is recommended to verify stock for your required size, especially for less common dimensions, to ensure timely project completion.
How does the dual thread compatibility benefit me?
The unique NPSM/NPT combination thread eliminates the need for adapters in many scenarios, simplifying installations and reducing potential leak points by allowing direct connection to a wider array of plumbing components commonly found on boats.
Frequently Asked Questions
What is the thread type of the GROCO TH-750-WS thru-hull fitting?
The GROCO TH-750-WS features a unique NPSM (National Pipe Straight Mechanical) and NPT (National Pipe Taper) combination thread.
What material is the GROCO TH-750-WS thru-hull fitting made of?
This thru-hull fitting is constructed from high-grade #316 stainless steel, renowned for its exceptional resistance to corrosion in marine environments.
What sizes are available for the GROCO thru-hull fittings?
The GROCO TH-750-WS is available in sizes ranging from 1/2" up to 3" to accommodate various plumbing requirements.
Is the GROCO TH-750-WS thru-hull fitting UL listed?
Yes, the GROCO TH-750-WS is UL Listed under certification 647B, indicating compliance with safety and performance standards.
What is the difference between NPSM and NPT threads?
NPSM threads are straight, relying on a gasket or O-ring for sealing, while NPT threads are tapered and seal via the wrenching of the threads themselves. The combination thread on this fitting offers versatility for both types of connections.
