POWERTEC Aluminum Blast Gate 4 Inch, w/Anti Clog and Air Leak Seal, 4PK

POWERTEC 70326-P4 Aluminum Blast Gate 4 Inch — Anti-Clog, Air-Seal, Locking Stop, 4-Pack POWERTEC USA 4" ID • ALUMINUM BODY • STEEL GATE • ANTI-CLOG GROOVES • AIR-SEAL EDGES • LOCKING STOP • 4-PACK 4" Aluminum Blast Gate — Anti-Clog, Air-Leak Seal, Locking Stop (70326-P4) — 4PK Your Dust Collector Has One Job. A Leaky Blast Gate Stops It From Doing It.

Every multi-machine shop runs the same DC frustration: open a blast gate at the table saw and the suction at the jointer — and every other machine on the line — drops because the closed gates aren't actually sealing. Cheap plastic blast gates warp, crack at the hose spigots, and develop clearance gaps in the slide channel that bleed suction even when "closed." Over time they also clog — fine dust and chips pack into the gate slot until the slider grinds to a stop. The POWERTEC 70326-P4 addresses both problems. Four 4" cast aluminum blast gates with a steel sliding gate, air-seal closed edges that prevent suction bleed when the gate is closed, and self-cleaning anti-clog grooves that push debris out of the slide channel rather than letting it pack in. Each gate includes a locking stop so the gate stays fully open or fully closed without drifting during machine operation.

The aluminum body resists the warping, cracking, and distortion that shortens plastic blast gate life — particularly at the hose connections, where flex hose puts lateral stress on the spigots every time it's connected or repositioned. The steel sliding gate operates smoothly without the flex and sag of plastic sliders, and the tighter tolerances of a metal-on-metal sliding interface are what make the air-seal design actually work. Four gates in the pack covers a standard four-machine shop layout — one purchase, one session, whole shop done.

What's in the Pack 4 Blast Gates Included 4" ID — Hose & Duct Aluminum Gate Body Material Steel Sliding Gate Material Three Features That Set This Gate Apart 🔒 Air-Seal Closed Edges

Sealed edges around the gate housing close the air path completely when the gate is shut — no suction bleeds from closed branches into the active line. Your dust collector's full airflow goes where you directed it, not out through whatever branch you thought you closed.

🧹 Self-Cleaning Anti-Clog Grooves

The slide channel is cut with relief grooves that push fine dust and chip debris out of the path as the gate moves — instead of packing it into corners that jam the slider. Blast gates that clog are gates you stop using. These stay smooth through regular operation without periodic disassembly to clear.

🎯 Locking Stop

A built-in stop locks the gate in the fully open position so vibration from the running machine can't gradually walk the gate closed and choke suction mid-session. Fully open when you set it open. Fully closed when you close it. Stays where you put it.

Why Gate Quality Directly Affects System-Wide Suction Performance

A dust collector moves a fixed volume of air at a given static pressure. Every open or leaking gate that's supposed to be closed is a competing air path — the collector pulls air through the path of least resistance, which may not be the machine you're trying to collect from. A single leaking "closed" gate can reduce suction at the active machine by 20–30%. Three leaking gates on a four-machine line and your collector is barely working at the machine where you actually need it.

Open Gate at Active Machine Full system suction — 100% directed to the machine in use Closed Gate — Leaking Seal Bleeds suction — reduces airflow at active machine Closed Gate — Air Sealed No bleed — full suction preserved at open branch Aluminum vs Plastic Blast Gates ◆ Aluminum Body + Steel Gate (This Product)

• Cast aluminum body resists warping, cracking, and UV degradation — maintains tight tolerances over years of use
• Steel sliding gate operates on tighter metal-on-metal tolerances — enables the air-seal design to function correctly
• Hose spigots withstand lateral flex stress from flex hose without cracking at the connection point
• Anti-clog grooves machined into metal channel — stays effective, doesn't wear into a clog trap over time
• Appropriate for professional shop and heavy-use hobby environments

Plastic Blast Gates (Standard)

• Plastic body subject to warping in shop temperature extremes — gradually opens gaps in slide channel tolerances
• Plastic slider has more flex — leaking "sealed" gates are common as tolerances loosen with use
• Hose connection spigots brittle under lateral stress — prone to cracking at the hose attachment point
• Clogging common in fine dust environments — packed chip debris jams the slide
• Lower cost for initial purchase; higher replacement frequency

⚠ Flex Hose Connections Require Hose Clamps — Not Included

When connecting this blast gate inline with flexible dust collection hose, hose clamps are required to secure the connection and prevent the hose from separating under suction load. Hose clamps are not included with this product — purchase separately. When used with rigid duct (metal or PVC), standard duct connections and screws are sufficient.

How Four Gates Maps to a Standard Shop Layout Gate 1 Table Saw Gate 2 Jointer Gate 3 Planer Gate 4 Band Saw / Router Table

One gate per branch off the main DC trunk line. Open the gate at the machine you're using, close the rest. The air-seal design means every closed gate actually holds — your collector runs at full efficiency at the active machine regardless of how many branches are on the line.

Key Product Benefits:

• Air-Seal Closed Edges: Sealed gate edges prevent suction bleed from closed branches into the active line — preserves full system airflow at the machine in use.
• Self-Cleaning Anti-Clog Grooves: Relief grooves in the slide channel push debris out rather than letting it pack in — gate stays smooth-operating without maintenance teardowns.
• Locking Stop: Built-in stop holds the gate fully open during operation — prevents vibration from gradually walking the gate closed and choking suction mid-session.
• Cast Aluminum Body: Resists warping and cracking under shop temperature extremes and lateral hose stress — maintains tight slide tolerances throughout service life.
• Steel Sliding Gate: Tighter metal-on-metal tolerances versus plastic sliders — what makes the air-seal design function correctly over time.
• 4" ID Compatibility: Fits 4" ID hose and rigid duct — the standard 4" main line size for most shop and home DC systems. Compatible with plastic, metal, and flex duct.
• 4-Pack Value: One purchase covers a standard multi-machine shop layout — outfit four branch drops in a single order.

PRO TIP: Install blast gates as close to the machine as practical — not at the trunk line. A gate near the machine minimizes the dead-air volume in the closed branch between the gate and the collector. The shorter that closed segment is, the faster the system stabilizes at full suction when you open the gate at the next machine. Long closed branches between gate and trunk cause a momentary suction drop every time you open a new gate. Where These Gates Are Installed Table saw — inline on 4" branch drop from DC trunk line to blade guard or cabinet port Jointer — branch line gate before the machine's dust port connection Thickness planer — chip discharge branch gate on main DC line Band saw — lower cabinet dust port branch gate Router table — under-table DC connection branch gate Drill press — branch gate for shop-vac drop at machine base Lathe — branch gate controlling dedicated DC drop to lathe area Spindle sander — branch gate on dedicated DC branch line Any machine on a shared 4" DC trunk line requiring individual airflow control Product Specifications

• SKU / Part Number: 70326-P4
• Pack Quantity: 4 Blast Gates
• Port Size: 4" ID — Hose and Rigid Duct
• Gate Body Material: Cast Aluminum — Heavy Duty
• Sliding Gate Material: Premium Steel
• Air Seal: Yes — Closed Edges Prevent Suction Bleed
• Anti-Clog Feature: Yes — Self-Cleaning Relief Grooves in Slide Channel
• Locking Stop: Yes — Holds Gate Fully Open During Operation
• Compatible With: 4" ID Flex Hose, Rigid Metal Duct, Rigid PVC Duct
• Hose Clamps Required: Yes, when used with flexible hose — not included

More POWERTEC Blast Gate & Dust Collection Options

• POWERTEC 70326 (Single) — Same 4" aluminum blast gate, sold individually — for adding a single gate to an existing run
• POWERTEC 70295 — 4" Integrated Blast Gate, Clog-Resistant — inline blast gate with integrated port design for compact installations
• POWERTEC 4" DC Hose 90° Elbow Connector with Blast Gate & Flex Cuff — combined elbow/blast gate assembly for branch connections requiring a directional change
• POWERTEC 70128V — Left Spiral Flexible Dust Collection Hose 3-13/16" (97mm) — for flexible branch line connections from gate to machine port

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