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Heavy Duty Gate Closer

A gate closer that fails isn't just inconvenient, it's a safety and liability issue. An unlatched pool gate. A commercial driveway gate that swings open in the wind. A garden gate that sags after one season outdoors. Heavy duty gate closers exist to prevent exactly these failures.

Waterson heavy duty gate closers are built differently from standard door closers. Gates face challenges that interior doors don't: full weather exposure, wider spans, heavier frames, and operating positions from horizontal to vertical. Waterson's hinge-integrated hydraulic design handles all of these, combining the gate hinge and self-closing mechanism into a single stainless steel unit that requires no overhead arm, no exposed closing cylinder, and no seasonal adjustment.

Engineered to carry load, designed to meet codes.

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Original price $586.50 - Original price $586.50
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3pcs Self Closing Gate Hinges for Pool | Mechanical | Hold Open | Weldable | 7ft | 260 lbs | 1” to 4” Thick | SS316 | K51P-C3-316

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Waterson self closing pool hinges built in SS316 deliver a reliable mechanical closing motion that resists performance drift near chlorinated water...

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Original price $545.00 - Original price $545.00
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3pcs Full Surface Gate Hinges Heavy Duty | Hydraulic Soft Closing | Hold Open | Weldable | 7ft | 260 lbs | 1” or 1.5" Thick | SS304 | K51PS-D3

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Waterson soft close gate hinges give you independent control of speed, spring power, and closing tension through a numeric adjustment panel and hyd...

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3pcs Full Surface Heavy Duty Gate Hinges | Mechanical Self Closing | Hold Open | Weldable | 7ft | 260 lbs | 1" or 1.5" Thick | SS304 | K51PS-C3

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Waterson black gate hinges in a 4" template include a numerical tension panel that lets installers fine-tune closing force during field setup. Thes...

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Original price $545.00 - Original price $545.00
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3pcs Black Stainless Steel Gate Hinges Full Surface | Hydraulic Soft Closing | Weldable | 7ft | 260 lbs | 1” or 1.5" Thick | SS304 | K51PS-B3

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Designed for long-term exposure, Waterson heavy duty outdoor door hinges use a hydraulic soft-close system that keeps your gate closing stable in r...

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Original price $602.00 - Original price $602.00
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3pcs Marine Stainless Steel Full Surface Gate Hinges | Hydraulic Soft Closing | Hold Open | Weldable | 7ft | 260 lbs | 1” or 1.5" Thick | SS316 | K51PS-D3-316

Only 1 left!

In chlorinated and coastal environments, predictable motion depends on materials that won’t degrade, and these pool gate hinges deliver that throug...

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Original price $564.00 - Original price $564.00
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3pcs Stainless Marine Full Surface Gate Hinges | Mechanical Self Closing | Hold Open | Weldable | 7ft | 260 lbs | 1" or 1.5" Thick | SS316 | K51PS-C3-316

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Waterson self closing pool hinges built in SS316 deliver a reliable mechanical closing motion that resists performance drift near chlorinated water...

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Original price $564.00 - Original price $564.00
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Original price $602.00 - Original price $602.00
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3pcs Marine Stainless Full Surface Gate Hinges | Hydraulic Soft Closing | Weldable | 7ft | 260 lbs | 1" or 1.5" Thick | SS316 | K51PS-B3-316

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Swimming pool gate hinges built with SS316 components use a hydraulic damper and adjustable tension system to keep closing behavior consistent in c...

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Original price $602.00 - Original price $602.00
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Original price $564.00 - Original price $564.00
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3pcs Heavy Duty Marine Full Surface Gate Hinges | Mechanical Self Closing | Weldable | 7ft | 260 lbs | 1” or 1.5" Thick | SS316 | K51PS-A3-316

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Self closing pool gate hinges built in SS316 give you a corrosion-resistant, mechanical spring system with numerical tension control for 4-ft × 7-f...

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Original price $564.00 - Original price $564.00
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Original price $338.00 - Original price $338.00
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2pcs Black Stainless Steel Gate Hinges Full Surface | No Back Plate | Mechanical Self Closing | Weldable | 6ft | 150 lbs | 1" or 1.5" Thick | SS304 | K51PS-A2

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Dragging gates, uneven closing, or inconsistent latch speed usually point back to hinge control; not the gate. Waterson stainless steel self closin...

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Original price $570.50 - Original price $570.50
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3pcs Heavy Duty Wood Gate Hinges Soft Closing | Self Closing | Soft Closing | Weldable | 5x4 | 7ft | 260 lbs | 1-4” Thick | SS304 | K51P-B3/D3

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Material: Stainless Steel 304 Product Dimensions: 5"H × 4"W Mounting Type: Door Mount – Full Mortise Door Size: 150mm W x 2100mm H (4ft x 7ft)...

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3pcs Heavy Duty Wood Gate Hinges for Fence | Self Closing | Soft Closing | Weldable | 5x4 | 7ft | 260 lbs | 1-4” Thick | SS304 | K51P-A3/B3/C3/D3

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Material: Stainless Steel 304 Product Dimensions: 5"H × 4"W Mounting Type: Door Mount – Full Mortise Door Size: 150mm W x 2100mm H (4ft x 7ft)...

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Original price $353.00 - Original price $432.00
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2pcs Wood Gate Hinges Heavy Duty | Self Closing | Soft Closing | Weldable | 5x4 | 6ft | 150 lbs | 1-4” Thick | SS304 | K51P-A2/B2

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gatMaterial: Stainless Steel 304 Product Dimensions: 5"H × 4"W Mounting Type: Door Mount – Full Mortise Door Size: 910mm W x 1830mm H (3ft x 6f...

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Original price $513.59 - Original price $513.59
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3pcs Heavy Duty Marine Gate Hinges | Self Closing | Weldable | 4.5x4.5 | 7ft | 260 lbs | SS316 | K51MP-A3-316

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Material: Stainless Steel 316 Product Dimensions: 4 ½ W x 4 ½ H Mounting Type: Door Mount – Full Mortise Door Size: 1150mm W x 2100mm H (4ft x...

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Original price $383.40 - Original price $383.40
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2pcs 316 Stainless Steel Hinges for Gates | Soft Closing | Weldable | 4.5x4.5 | 6ft | 150 lbs | SS316 | K51MP-B2-316

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Material: Stainless Steel 316 Product Dimensions: 4 ½ W x 4 ½ H Mounting Type: Door Mount – Full Mortise Door Size: 910mm W x 1830mm H (...

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Original price $342.40 - Original price $342.40
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2pcs 316 Stainless Steel Gate Hinges | Self Closing | Weldable | 4.5x4.5 | 6ft | 150 lbs | SS316 | K51MP-A2-316

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Material: Stainless Steel 316 Product Dimensions: 4 ½ W x 4 ½ H Mounting Type: Door Mount – Full Mortise Door Size: 910mm W x 1830mm H (...

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Original price $342.40 - Original price $342.40
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Original price $456.59 - Original price $497.59
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3pcs Round Metal Post to Wood Gate Hinges | Self Closing | Soft Closing | Weldable | 4.5x4.5 | 7ft | 260 lbs | 1.5” to 2” Thick | SS304 | K51MP-A3/B3

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Material: Stainless Steel 304 Product Dimensions: 4 ½ W x 4 ½ H Mounting Type: Door Mount – Full Mortise Door Size: 1150mm W x 2100mm H (4ft x...

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Original price $456.59 - Original price $497.59
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Original price $304.39 - Original price $345.39
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2pcs Weld On Gate Hinges | Self Closing | Soft Closing | Weldable | 4.5x4.5 | 6ft | 150 lbs | 1.5” to 2” Thick | SS304 | K51MP-A2/B2

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Material: Stainless Steel 304 Product Dimensions: 4 ½ W x 4 ½ H Mounting Type: Door Mount – Full Mortise Door Size: 910mm W x 1830mm H (...

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Original price $304.39 - Original price $345.39
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Original price $627.50 - Original price $627.50
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3pcs Swimming Pool Gate Hinges | Hydraulic | Weldable | 7ft | 260 lbs | 1” to 4” Thick | SS316 | K51P-B3-316

in stock

Swimming pool gate hinges built with SS316 components use a hydraulic damper and adjustable tension system to keep closing behavior consistent in c...

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Original price $627.50 - Original price $627.50
Original price
$627.50
$627.50 - $627.50
Current price $627.50

Key Specifications of Waterson Heavy Duty Gate Closer Include:

  • Gate Height: Up to 6 ft (2 pcs) / 7 ft (3 pcs)
  • Gate Weight: Up to 150 lbs (2 pcs) / 260 lbs (3 pcs)
  • Gate Thickness: 1” to 4” 
  • Material: Stainless Steel (SS304). SS316 available on selected marine and pool gate models
  • Finish: Satin Stainless Steel (US32D), Flat Black (US19)
  • Type: Mechanical Self-Closing (A-C) or Hydraulic Soft-Closing (B-D)
  • Features: Fire Rated (A-B Models), Hold Open (C-D Models)

Application: Swing gate installations requiring controlled closing for frequent use, including pedestrian, service, and perimeter access gates.

How is a hinge gate closer different from an arm or cylinder closer?

Arm and cylinder closers add extra hardware to the gate, which can look bulky, get in the way and wear out in the weather. A hinge gate closer replaces your gate hinges, so there is nothing extra to mount and nothing sticking out. Closing force and speed are adjusted right on the hinge.

What is the difference between a hydraulic gate closer and a spring gate closer?

A spring (mechanical) gate closer uses spring tension to close the gate firmly every time. It is simple and tough. A hydraulic gate closer adds a damper that controls the closing speed, so the gate closes smoothly without slamming, and wind gusts are less likely to bang it shut. In the Waterson line, A and C sets are mechanical, and B and D sets are hydraulic.

What is the best gate closer for a pool gate?

Most pool barrier codes require pool gates to be self-closing and self-latching, so the closer must bring the gate fully shut every time. Choose SS316 marine grade stainless steel, such as the K51P-A3-316, because it resists chlorine and salt far better than standard steel. Avoid hold-open sets on pool gates, and always check your local pool code.

Should I choose 304 or 316 stainless steel?

SS304 stainless steel works well for most garden, yard and commercial gates. Choose SS316 marine grade stainless steel for pools, coastal properties, or anywhere the gate is exposed to salt, chlorine or cleaning chemicals. It costs a bit more, but it holds up much longer in harsh conditions.

Which gate closer fits my gate?

Pick by how the hinge mounts and how thick your gate frame is:

  • K51P series: weld-on gate closers for gate frames 1" to 4" thick. The most flexible option for metal gates.
  • K51MP series: weld-on 4-1/2" x 4-1/2" gate closers for frames 1.5" to 2" thick, great for wood and wrought iron gates.
  • K51PS series: full surface gate closers with no back plate, for frames 1" or 1.5" thick.

How heavy a gate can a gate closer handle?

A 2-hinge set handles gates up to 6 ft tall and 150 lbs. A 3-hinge set handles gates up to 7 ft and 260 lbs. If your gate is close to the limit, choose the larger set for smoother, more reliable closing.

Can I weld gate closer hinges onto my gate?

Yes. Most Waterson gate closers are weldable. Install and adjust the closing speed first, then spot weld only, so the heat does not damage the mechanism inside the hinge.

Can a gate closer hold the gate open?

Yes. C sets (mechanical) and D sets (hydraulic) hold the gate open at 90° when you need it, which is handy for deliveries, yard work or busy entrances. A light push releases the gate, and it closes on its own. Do not use hold-open sets on pool gates or any gate that must always stay closed.

How do I stop a gate from slamming?

Choose a hydraulic gate closer (B or D set) and adjust its closing speed. Slow down the swing speed first, then the latch speed, until the gate closes smoothly but still latches every time. Then lock the settings with the hex wrench, so wind and daily use do not change them.

Will a gate closer work outdoors in rain, sun and wind?

Yes. Waterson gate closers are made from stainless steel, so they resist rust in rain, sun and temperature changes. Hydraulic sets also control wind gusts, so the gate does not blow open or slam shut. For salt air or pool water, choose SS316.

What finishes are available for gate closers?

Satin stainless steel (US32D) and flat black (US19) are available on most models. Dark bronze (695) is available on select SS316 models.

How do I install and adjust a gate closer?

Installation is similar to installing standard gate hinges, with no arm or cylinder to fit.

  • Mount the hinges in the order printed on the label, at the factory setting (N).
  • Raise the spring tension one number at a time until the gate closes and latches on its own.
  • Adjust swing speed first, then latch speed.
  • Lock the settings with the hex wrench, then spot weld if you are using a weld-on model.

For full steps and videos, see our installation guide and adjustment guides.

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