Which hose adapter reducer should I get that will connect onto a 4" diameter blast gate outlet then onto or in a 2 1/2" diameter port fitting tblesaw?

Not this adapter, unless you went to HD or Lowes and purchased a 4" thin wall PVC straight connector to convert the blast gate to female. Look at WoodRiver 2-1/2" O.D. Hose to 4" O.D. Quick-Connect Dust Collection Fitting, it appears to be more toward what you are looking for, with a female 4" and will do 2.5" or 2.25" hose connections.

Can I use it to reduce a 4" pvc pipe (water pipe) to a 2-1/2" dust collector hose?

you would have to measure the inside and out Dia.of your pipes.and then check what this product dimensions.

Will this connect directly to 4" abs pipe?

No, you will need a 4”coupler.

I have a Jet bandsaw and the dust comes from a 4" outside dim hole I need to cover and to attach it to a 2 1/4 outside dim vac hose. Will this work?

It looks like the small end is 2 1/4 ID and 2 3/8 OD. The larger end is 3 3/4 ID and 3 7/8 OD. These are tape measurements, not calipers

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

POWERTEC 70136 4-Inch to 2-1/2-Inch Cone Reducer

POWERTEC 70136 4-Inch to 2-1/2-Inch Cone Reducer

Product ID: 324137994

Details

Brand
POWERTEC
Colour
Black
Item weight
0.2 Pounds
Material
Acrylonitrile
Product dimensions
10.2L x 1.3W

🔄4" to 2.5" hose adapter

⚙️precise dimensional fit

🛠️durable ABS plastic build

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

EC$124

Duties & taxes included

In stock

Sold byAmazon GrenadaDelivered 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 Grenada.

Secure transaction

Description

🔧 Upgrade your dust collection game with precision and durability!

BUILT TO LAST - Premium ABS plastic ensures long-term durability against abrasive workshop dust.
QUICK EASY SETUP - Simple installation and removal save you time and hassle on every project.
PRECISION ENGINEERING - Exact dimensions guarantee a snug, reliable fit—no guesswork needed.
UNIVERSAL COMPATIBILITY - Works with major shop vacuums like Shop-Vac and Sears when paired with flex cuffs.
SEAMLESS HOSE TRANSITION - Effortlessly connect 4" and 2.5" dust collection hoses for optimized airflow.

The POWERTEC 70136 Cone Reducer is a high-quality ABS plastic adapter designed to connect 4-inch dust collection hoses to 2.5-inch hoses, enabling compatibility with various shop vacuums and dust systems. Engineered for durability and precise fit, it simplifies hose transitions in workshop dust collection setups, ensuring efficient airflow and easy installation.

Specifications

ASIN	B002DSDSY2
ASIN	B002DSDSY2
Best Sellers Rank	#78,076 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2 in Vacuum & Dust Collector Reducing Couplings
Brand Name	POWERTEC
Color	Black
Customer Reviews	4.5 4.5 out of 5 stars (6,613)
Customer reviews	4.5 4.5 out of 5 stars (6,613)
Date First Available	28 July 2017
Global Trade Identification Number	00736815005656
Included Components	4-Inch to 2-1/2 Inch Cone Reducer
Is Discontinued By Manufacturer	No
Item Dimensions L x W	10.2L x 1.3W centimeters
Item Length	1.5 Inches
Item Type Name	4-Inch to 2-1/2 Inch Cone Reducer
Item Weight	0.2 Pounds
Item model number	70136
Manufacturer	POWERTEC
Manufacturer	POWERTEC
Material Type	Acrylonitrile Butadiene Styrene (ABS)
Nominal Wall Thickness	0.125 inches
Outside Diameter	3.97 Inches
Product Dimensions	10.16 x 10.16 x 10.16 cm; 90.72 g
UPC	736815005656
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

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days 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.