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.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

POWERTEC 70108 4 Inch Blast Gate for Dust Collector, Dust Collection Fittings

POWERTEC 70108 4 Inch Blast Gate for Dust Collector, Dust Collection Fittings

Product ID: 4132545

Details

Brand
POWERTEC
Color
4" Blast Gate
Connector Type
Slip
Global Trade Identification Number
Item Weight
5.6 ounces
Item dimensions L x W x H
6.6 x 6.5 x

📏4-inch nominal diameter fit

⚙️Optimizes airflow control

🛡️Abrasion-resistant ABS plastic

$42.26

Duties & taxes included

In stock

Sold byAmazon EcuadorDelivered 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 Ecuador.

Secure transaction

Description

🛠️ Take control of your dust—because your workshop deserves precision airflow!

AIRFLOW MASTERY - Manually regulates vacuum flow to maximize dust collection efficiency across your machines.
PRECISION 4 INCH FIT - Seamlessly connects with 4” ID dust hoses and ports for a universal workshop upgrade.
EASY INSTALLATION USE - Designed for pros and hobbyists alike—quick setup means less downtime and more productivity.
DURABLE ABS CONSTRUCTION - Built tough to resist daily wear from sawdust, woodchips, and debris—engineered for longevity.
PROACTIVE MAINTENANCE REMINDER - Keep your system clog-free with simple cleaning to ensure smooth gate operation every time.

The POWERTEC 70108 4 Inch Blast Gate is a premium ABS plastic dust collection accessory designed to fit 4” ID hoses and ports. It enhances dust collection efficiency by manually controlling airflow between machines, built to withstand abrasive workshop debris. Ideal for professionals and DIYers seeking durable, easy-to-install dust management solutions.

Specifications

ASIN	B005VRPQ92
Best Sellers Rank	#32,747 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #29 in Vacuum & Dust Collector Replacement Parts #58 in Power Tool Replacement Parts
Brand Name	POWERTEC
Color	4" Blast Gate, 1pk
Connector Type	Slip
Customer Reviews	4.5 4.5 out of 5 stars (2,050)
Global Trade Identification Number	00736815003416
Included Components	4-Inch Blast Gate for Vacuum/Dust Collector
Item Dimensions	6.6 x 6.5 x 3.5 inches
Item Type Name	POWERTEC 70108 4 Inch Blast Gate for Dust Collector/ Vacuum Fittings
Item Weight	5.6 ounces
Manufacturer	POWERTEC
Manufacturer Part Number	70108
Material Type	Acrylonitrile Butadiene Styrene
Model Number	70108
Number of Packs	1
Number of Pieces	1
Set Name	Single
Size	4" (1pk)
UPC	074994519060 736815003416
Unit Count	1 Count

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

$42.26

Duties & taxes included

In stock

Sold byAmazon EcuadorDelivered 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 Ecuador.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

View all Trustpilot reviews