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

Dayton Unloader Valve, 303 Stainless Steel, NPT, 6-3/4 in Overall Height - Unloader Valves
DaytonUnloader Valves

Dayton Unloader Valve, 303 Stainless Steel, NPT, 6-3/4 in Overall Height

The DAYTON Unloader Valve is a 3/8-inch bypass connection size valve with an NPT bypass connection type, constructed from 303 stainless steel and featuring a 6 3/4-inch overall height. This unloader valve is designed…

SKU 3G-OTH-440898

Brand
Dayton
Item
Unloader Valve, 303 Stainless Steel, NPT, 6-3/4 in Overall Height
Category
Unloader Valves
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

Dayton
Type
NPT
Overall Ht
6 3/4 in
Stainless Steel
303
Bypass Connection Type
NPT

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

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

Product Description

The DAYTON Unloader Valve is a 3/8-inch bypass connection size valve with an NPT bypass connection type, constructed from 303 stainless steel and featuring a 6 3/4-inch overall height. This unloader valve is designed for industrial applications requiring a bypass function.

Frequently Asked Questions

What is a DAYTON unloader valve used for?

A DAYTON unloader valve is used in industrial fluid or pneumatic systems to divert flow when a preset pressure is reached, protecting pumps and compressors. The model features a 3/8-inch NPT bypass connection and 303 stainless steel construction for corrosion resistance in demanding environments.

What are the specifications of the DAYTON unloader valve?

The DAYTON unloader valve has a 3/8-inch NPT bypass connection, 303 stainless steel body, and an overall height of 6 3/4 inches. It is designed for bypass applications in industrial systems requiring reliable pressure relief and flow diversion.

Where to buy a DAYTON unloader valve worldwide?

3G Electric supplies the DAYTON unloader valve to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this 303 stainless steel bypass valve with 3/8-inch NPT connection.

How to install a DAYTON unloader valve?

Install the DAYTON unloader valve by connecting the 3/8-inch NPT bypass port to your system's return line. Ensure the valve is oriented per the manufacturer's guidelines and that all threads are sealed with appropriate pipe sealant. Test for leaks before full operation.

Used in

Common applications for Dayton
HVAC ventilation — DAYTON centrifugal upblast roof exhaust fans (SKU 7M7U3) for kitchen exhaust systems
Mechanical power transmission — DAYTON HTD timing pulleys (SKU 404GV0) for conveyor belt drives
Process water handling — DAYTON self-priming centrifugal pumps (SKU 2ZXT4) for dewatering or transfer
Roofing and building services — DAYTON fixed ventilated roof curbs (SKU 4HX59) for filtered supply fan installations
Material handling — DAYTON latch assemblies (SKU 2KEN4) for electric chain hoist hook safety
Industrial air movement — DAYTON downblast roof exhaust fans (SKU 3HFL9) for clean air exhaust in manufacturing plants
Not sure this is the right part? Photo-identify it

Dayton Products

3G Electric supplies Dayton unloader valves. 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
This non-code pressure relief valve is designed for air, inert gas, and liquids. It features a 1/2 in MBSPP x 1/2 in barb connection, an aluminum body, a maximum operating pressure of 200 psi, and a temperature range of 41°F to 140°F. Typical applications include pneumatic circuits, compressor tanks, and liquid transfer lines
Dayton
This non-code pressure relief valve is designed for air, inert gas, and liquids. It features a 1/2 in MBSPP x 1/2 in barb connection, an aluminum body, a maximum operating pressure of 200 psi, and a temperature range of 41°F to 140°F. Typical applications include pneumatic circuits, compressor tanks, and liquid transfer lines
This polypropylene quick disconnect is designed for drum pump fluid transfer systems. It features a 1 1/4-inch hose barb and a 1 1/4-inch threaded connection. The polypropylene body provides chemical resistance for handling a variety of industrial fluids
Dayton
This polypropylene quick disconnect is designed for drum pump fluid transfer systems. It features a 1 1/4-inch hose barb and a 1 1/4-inch threaded connection. The polypropylene body provides chemical resistance for handling a variety of industrial fluids
Dayton
Dayton
This valve stopper is a polypropylene air valve component used in pneumatic systems to control or stop airflow. It is suitable for industrial valve applications requiring corrosion resistance
This 3-way/2-position normally open solenoid valve body has a 1/4 in pipe size. It features a stainless steel body and NBR seal, suitable for outdoor operating environments. Used to control the flow of air or compatible fluids in applications such as industrial automation and irrigation systems
Dayton
This 3-way/2-position normally open solenoid valve body has a 1/4 in pipe size. It features a stainless steel body and NBR seal, suitable for outdoor operating environments. Used to control the flow of air or compatible fluids in applications such as industrial automation and irrigation systems
This drum pump tube assembly is constructed of PVDF for chemical resistance. It features a 1-5/8 inch inlet, 39 inch maximum suction tube length, and a maximum flow rate of 35 gpm. The discharge connection is a hose barb. Suitable for transferring fluids from drums or containers in industrial fluid handling applications
Dayton
This drum pump tube assembly is constructed of PVDF for chemical resistance. It features a 1-5/8 inch inlet, 39 inch maximum suction tube length, and a maximum flow rate of 35 gpm. The discharge connection is a hose barb. Suitable for transferring fluids from drums or containers in industrial fluid handling applications
This Dayton solenoid valve body is a 2-way, 2-position normally open type with a 1/4 in pipe size. It features a stainless steel body and NBR seal, suitable for indoor operating environments. Commonly used in fluid control applications such as water or air handling where corrosion resistance is required
Dayton
This Dayton solenoid valve body is a 2-way, 2-position normally open type with a 1/4 in pipe size. It features a stainless steel body and NBR seal, suitable for indoor operating environments. Commonly used in fluid control applications such as water or air handling where corrosion resistance is required

More from Dayton

View all Dayton parts
Brass unloader valve for pressure washers and high-pressure cleaning systems. Regulates pump pressure by diverting flow when the trigger is released, protecting the pump from overpressure. Overall height 7 1/2 in, maximum operating pressure 2600 psi
Dayton
Brass unloader valve for pressure washers and high-pressure cleaning systems. Regulates pump pressure by diverting flow when the trigger is released, protecting the pump from overpressure. Overall height 7 1/2 in, maximum operating pressure 2600 psi
Brass unloader valve for pressure washers and high-pressure cleaning systems. Maximum operating pressure 3650 psi. Overall height 6-3/4 inches. Regulates pump pressure and diverts flow when trigger is released
Dayton
Brass unloader valve for pressure washers and high-pressure cleaning systems. Maximum operating pressure 3650 psi. Overall height 6-3/4 inches. Regulates pump pressure and diverts flow when trigger is released
Brass unloader valve with a maximum operating pressure of 4,500 psi and overall height of 6-3/4 in. Used in pressure washers and high-pressure cleaning systems to bypass flow when the trigger is released, protecting the pump from deadheading
Dayton
Brass unloader valve with a maximum operating pressure of 4,500 psi and overall height of 6-3/4 in. Used in pressure washers and high-pressure cleaning systems to bypass flow when the trigger is released, protecting the pump from deadheading
This brass unloader valve is designed for high-pressure cleaning systems and pressure washers. It regulates pump output by diverting water flow when the trigger is released, preventing pump damage and reducing load on the engine or motor. Rated for a maximum operating pressure of 5,000 psi with an overall height of 8-1/8 in
Dayton
This brass unloader valve is designed for high-pressure cleaning systems and pressure washers. It regulates pump output by diverting water flow when the trigger is released, preventing pump damage and reducing load on the engine or motor. Rated for a maximum operating pressure of 5,000 psi with an overall height of 8-1/8 in
Brass unloader valve with a maximum operating pressure of 3,650 psi and overall height of 8 1/8 in. Used in pressure washers and high-pressure cleaning systems to regulate pump pressure and divert water flow when the trigger is released, preventing pump overload
Dayton
Brass unloader valve with a maximum operating pressure of 3,650 psi and overall height of 8 1/8 in. Used in pressure washers and high-pressure cleaning systems to regulate pump pressure and divert water flow when the trigger is released, preventing pump overload