Can anyone tell me the actual outside diameter of the flange on the 4"

I used 4" schedule 40 PVC and it fit snugly on the 4" blast gate. I also drilled and screwed two sheet metal screws per blast gate (along with silicon sealer)

Are they both 4" od, or is one size 4"id for dc machine port?

No, They are 3 11/16 id and 3 13/16 + 1/32 od. There is nothing 4" here.

any suggestions on how to attach this to 4" DWV? The pipe is too large for these.

I didn't hook them up to 4inch. I ran 2 3/4 flex and pvc. Btw...it clogs up with saw dust. I drilled a hole on side opposite the slide with a forsner bit to blow it out. I cover the hole with duct tape.

The action on the 4" plastic version is very rough / jerky. Any successful method of smooting the action? Grease?

I found it varies from one gate to another. Applying wax from a candle or similar source, helped but did not fully fix the issue. I just rubbed it on the flat portion that fits in the groove and worked it back and forth. I would be afraid that grease would trap dust. I prefer metal gates.

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POWERTEC 70133-P4 2-1/2-Inch Blast Gate for Dust Collector, Dust Collection Fittings, 4 PK

POWERTEC 70133-P4 2-1/2-Inch Blast Gate for Dust Collector, Dust Collection Fittings, 4 PK

Product ID: 140104681

Details

Brand
POWERTEC
Colour
Black
Connector type
Slip
Global Trade Identification Number
Item dimensions L x W x H
16.8 x 16.5 x
Item weight
159 g

📏2.5-inch OD fit precision

🔄4-pack for multi-zone control

🛡️Premium abrasion-resistant ABS

NZ$166

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Description

🛠️ Take control of your dust flow like a pro—because clean workshops mean sharp minds!

BUILT TO ENDURE WORKSHOP WEAR - Crafted from durable ABS plastic to resist sawdust abrasion and daily use.
PRECISION FIT FOR PRO WORKFLOWS - Seamlessly connects with 2.5” ID dust hoses for optimized airflow control.
MULTI GATE PACK FOR FULL CONTROL - Includes 4 blast gates to manage multiple machines or zones effortlessly.
EASY INSTALLATION COMPATIBILITY - Fits most 2.5” ID ports; use Flex Cuff for 2.5” OD connections ensuring versatile setup.
MAXIMIZE DUST COLLECTION EFFICIENCY - Manual blast gate design directs airflow exactly where you need it.

The POWERTEC 70133-P4 2-1/2-Inch Blast Gate 4-pack is a premium ABS plastic accessory designed to optimize dust collection systems by precisely regulating airflow. Each gate fits 2.5-inch ID dust hoses or ports, offering durable, abrasion-resistant performance for professional and home workshops. Ideal for multi-zone dust management, these blast gates ensure cleaner, safer workspaces with easy installation and broad compatibility.

Specifications

ASIN	B0D22GB7RF
Batteries Required?	No
Best Sellers Rank	141,483 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,120 in Vacuum & Dust Collector Bags
Colour	Black
Customer Reviews	5.0 5.0 out of 5 stars (5)
Date First Available	22 April 2024
Guaranteed software updates until	unknown
Included Components	(4) 2-1/2” Blast Gates; Both ends have 2-1/2” OD outlet diameters and are designed to work with 2-1/2” ID dust hoses or other 2-1/2” ID ports
Item Package Quantity	1
Item Weight	599 g
Item model number	70133-P4
Manufacturer	POWERTEC
Material	ABS
Part Number	70133-P4
Product Dimensions	11.3 x 14 x 32 cm; 598.74 g
Size	2-1/2"
Style	Plastic 2.5", 4PK

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NZ$166

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to New Zealand.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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