Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

Image not available
TACOUnions

TACO 110-251SF Stainless Steel Flange Union, 3/4 in NPT, 2 Flanges, 4 Bolts

The TACO 110-251SF is a stainless steel flange union with a 3/4 inch NPT connection, supplied as a set of two flanges. This product includes four bolts and is identified by manufacturer part number 110-251SF and SKU…

SKU 3G-OTH-81230

Also listed as: 110251SF · 110 251SF

Brand
TACO
Item
110-251SF Stainless Steel Flange Union, 3/4 in NPT, 2 Flanges, 4 Bolts
Category
Unions
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

TACO
Manufacturer Part Number
110-251SF
Includes
(4) Bolts
Body Material
Stainless Steel

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

TACO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The TACO 110-251SF is a stainless steel flange union with a 3/4 inch NPT connection, supplied as a set of two flanges. This product includes four bolts and is identified by manufacturer part number 110-251SF and SKU 110-251SF.

Frequently Asked Questions

What is the TACO 110-251SF flange union used for?

The TACO 110-251SF is a stainless steel flange union used to connect and disconnect piping in industrial HVAC and plumbing systems. It provides a secure, leak-resistant joint for 3/4 inch NPT connections, commonly applied in water circulation and heating loops where maintenance access is needed.

What are the specifications of the TACO 110-251SF?

The TACO 110-251SF is a 3/4 inch NPT flange union made of stainless steel. It includes two flanges and four bolts. The manufacturer part number is 110-251SF, and the SKU is 3G-OTH-81230. This set is designed for durable, corrosion-resistant connections in industrial piping systems.

Where to buy the TACO 110-251SF worldwide?

You can source the TACO 110-251SF flange union through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply this TACO part to procurement teams internationally.

How to install the TACO 110-251SF flange union?

To install the TACO 110-251SF, align the two flanges over the pipe ends, insert the four included bolts, and tighten evenly in a cross pattern to ensure a uniform seal. Use a torque wrench to avoid over-tightening. Always follow standard piping practices for stainless steel connections.

Used in

Common applications for TACO
Hydronic heating systems — TACO 007 series circulator pumps for residential boiler water circulation.
Commercial HVAC — TACO 2400-60-3P inline pump for chilled water loops in large buildings.
Industrial process cooling — TACO 1630EAE10132096 pump for high-flow (110 gpm) cooling applications.
Zone control in radiant floor heating — TACO V075T2G2ZA024Q4A2 zone valve for regulating flow to individual zones.
Pump replacement and maintenance — TACO 007-045RP cartridge assembly for servicing existing 007 series pumps.
Piping connections in hydronic systems — TACO 110-251F-1 flange for joining pumps to pipework.

TACO Products

3G Electric supplies TACO unions. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
Standard flange assembly with 2 in NPT connection, stainless steel body, and EPDM gaskets. Includes four nuts. Used to connect pipes, valves, and equipment in industrial piping systems for water or HVAC applications
TACO
Standard flange assembly with 2 in NPT connection, stainless steel body, and EPDM gaskets. Includes four nuts. Used to connect pipes, valves, and equipment in industrial piping systems for water or HVAC applications
Standard flange assembly with 1 1/2 in NPT connection, ANSI Class 150 rating, and cast iron body. Includes four bolts. Compatible with TACO model 2400-30. Used in industrial piping systems for connecting pipes, valves, and pumps in low-pressure water and HVAC applications
TACO
Standard flange assembly with 1 1/2 in NPT connection, ANSI Class 150 rating, and cast iron body. Includes four bolts. Compatible with TACO model 2400-30. Used in industrial piping systems for connecting pipes, valves, and pumps in low-pressure water and HVAC applications
Standard flange with stainless steel body, includes bolt. Used in industrial piping systems to connect pipes, valves, and pumps. Compatible with TACO model 2400-50-3P and part numbers 5CHJ9, 5CHK1, 5CHK7
TACO
Standard flange with stainless steel body, includes bolt. Used in industrial piping systems to connect pipes, valves, and pumps. Compatible with TACO model 2400-50-3P and part numbers 5CHJ9, 5CHK1, 5CHK7
Standard flange with 1 in FNPT connection, constructed with a stainless steel body. Includes a nut for installation. Compatible with TACO model 110-113. Used in industrial piping systems to connect pipes, valves, and equipment
TACO
Standard flange with 1 in FNPT connection, constructed with a stainless steel body. Includes a nut for installation. Compatible with TACO model 110-113. Used in industrial piping systems to connect pipes, valves, and equipment
TACO
TACO
Standard flange set for connecting piping in fluid-handling systems. Includes two flanges and a bolt. Body is cast iron; gasket is PTFE. Connection size is 2 in FNPT
Standard flange with stainless steel body, includes bolt for secure assembly. Compatible with TACO model 110-113 and part numbers 5CHJ9, 5CHK1, 5CHK7. Used in fluid-handling systems such as HVAC and water circulation
TACO
Standard flange with stainless steel body, includes bolt for secure assembly. Compatible with TACO model 110-113 and part numbers 5CHJ9, 5CHK1, 5CHK7. Used in fluid-handling systems such as HVAC and water circulation

More from TACO

View all TACO parts
Bronze union with 3/4 in sweat connection, includes tail piece and EPDM gasket. Used in hydronic heating and cooling systems to connect and disconnect piping, compatible with circulator pumps such as model 003-BC4-PNP
TACO
Bronze union with 3/4 in sweat connection, includes tail piece and EPDM gasket. Used in hydronic heating and cooling systems to connect and disconnect piping, compatible with circulator pumps such as model 003-BC4-PNP
Bronze union with 3/4 in sweat connections, includes an EPDM gasket for sealing. Used in hydronic heating systems to connect circulator pumps to piping, allowing easy disassembly for maintenance or replacement
TACO
Bronze union with 3/4 in sweat connections, includes an EPDM gasket for sealing. Used in hydronic heating systems to connect circulator pumps to piping, allowing easy disassembly for maintenance or replacement
Bronze union with 1/2 in sweat connections, includes EPDM gasket. Used to connect or disconnect piping in hydronic heating systems, providing a leak-resistant seal for circulator pump installations
TACO
Bronze union with 1/2 in sweat connections, includes EPDM gasket. Used to connect or disconnect piping in hydronic heating systems, providing a leak-resistant seal for circulator pump installations
Bronze union with 1/2-inch connection, includes EPDM gasket. Used to connect and disconnect piping sections in hydronic heating and cooling systems, providing a corrosion-resistant joint with a reliable seal
TACO
Bronze union with 1/2-inch connection, includes EPDM gasket. Used to connect and disconnect piping sections in hydronic heating and cooling systems, providing a corrosion-resistant joint with a reliable seal