Storm King Mountain on the Hudson River
Storm King EnterprisesHydroClaw™ Expansion Tank Support Brackets
Manufacturer and distributor of professional-grade plumbing support solutions.
Who We Are
Storm King Enterprises specializes in designing and distributing durable plumbing hardware products used by contractors and sold through wholesale supply houses nationwide. Our products are built to perform—day after day, job after job.
Why Storm King Enterprises
Built for Contractors
Designed with real-world installation in mind.
Wholesale Distribution
Distributed through trusted supply houses nationwide.
Code-Friendly Designs
Durable products that meet industry standards.
Reliable Availability
Consistent stock and dependable fulfillment.
Understanding Expansion Tanks & Why They Need Proper Support
What Is Expansion?
Expansion is the increase in volume of heated fluid. When water is heated in a closed hydronic or plumbing system, it expands and the pressure must go somewhere. Expansion tanks absorb the increased volume and prevent dangerous pressure buildup.
Why Tanks Fail
Expansion tanks contain an internal bladder or diaphragm that separates the air charge from the system water. Over time, this bladder can fail, allowing the tank to fill completely with water — becoming "waterlogged" and extremely heavy.
Safety Hazard: Waterlogged Tanks
A waterlogged #30 expansion tank can weigh approximately 45 lbs. A waterlogged #60 tank can reach approximately 72 lbs. That kind of unsupported dead weight hanging from a pipe or strapped to a wall can stress piping, cause breakage, and lead to catastrophic water damage.
Heavy, waterlogged tanks can stress piping, cause breakage, and lead to catastrophic damage.
HydroClaw: Secure, Simple, Built to Last
HydroClaw is an easy-to-install, heavy-duty steel clamp and bracket that mounts to any structural member or unistrut channel. It securely holds your expansion tank — even a #60 size when completely waterlogged.
- Holds even a #60 size waterlogged tank
- Mounts to structure or unistrut
- Contractor-friendly installation
- Heavy-duty steel construction
Why Contractors Choose HydroClaw
Purpose-built for professional HVAC and plumbing installations.
Safer Installs
Prevents pipe stress and catastrophic failure from unsupported waterlogged tanks.
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Faster Mounting
Simple clamp-and-bolt design cuts install time on the job.
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Cleaner Mechanical Room Finish
Professional appearance that reflects quality workmanship.
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Works with Common Tank Sizes
Supports standard #30 and #60 diaphragm expansion tanks.
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Mounts to Structure or Unistrut
Versatile mounting on any structural member or unistrut channel.
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Reduces Risk of Pipe Damage
Eliminates the danger of heavy tanks hanging from unsupported piping.
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Where HydroClaw Is Used
Wall-Mounted Condensing Boiler Installs
Modern condensing boilers are wall-mounted and often don't include an integrated expansion tank. HydroClaw provides secure, independent tank mounting.
Low-Loss Headers & Integrated Air Removal
When using low-loss headers that replace traditional air scoops, expansion tanks need a dedicated, secure mounting point.
Domestic Hot Water Heater Expansion Tanks
Thermal expansion tanks on water heaters need reliable support — HydroClaw delivers.
Future Potential: Seismic-Style Mounting
Designed with robust construction that may serve future seismic-style mounting applications.
Get Pricing & Info
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Expansion Tank Bracket FAQs
What is a HydroClaw expansion tank bracket?
What tank sizes does HydroClaw fit?
Why do expansion tanks need dedicated support?
Where can I buy HydroClaw?
More questions? See the full HydroClaw FAQ or contact us.
Let us help you do your job — and make it look good too.
Get pricing, spec sheets, or distributor information for HydroClaw expansion tank brackets.