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Watts 3/4 740 030 FS ASME Section XIII Hot Water Pressure Relief Valve - ASME Section XIII Hot Water Pressure Relief Valves
WattsASME Section XIII Hot Water Pressure Relief Valves

Watts 3/4 740 030 FS ASME Section XIII Hot Water Pressure Relief Valve

The WATTS Relief Valve (MPN 3/4 740 030 FS) is an ASME Section XIII hot water pressure relief valve with FNPTF x FNPTF connections, sized 3/4 in x 1 in in iron. It has a maximum operating pressure of 75 psi and an…

SKU 3G-OTH-442473

Also listed as: 34740030FS · 3 4 740 030 FS · 3-4-740-030-FS

Brand
Watts
Item
3/4 740 030 FS ASME Section XIII Hot Water Pressure Relief Valve
Part Number
3/4 740 030 FS
Category
ASME Section XIII Hot Water Pressure Relief Valves
Available to Order
Also known as:3/4 740 030 FSWatts
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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

Watts
Manufacturer Part Number
3/4 740 030 FS
Type
3/4 in x 1 in, Iron
Overall Ht
5 5/8 in
Max. Op Pressure
75 psi

Technical Documents

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3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WATTS Relief Valve (MPN 3/4 740 030 FS) is an ASME Section XIII hot water pressure relief valve with FNPTF x FNPTF connections, sized 3/4 in x 1 in in iron. It has a maximum operating pressure of 75 psi and an overall height of 5 5/8 in.

Frequently Asked Questions

What is the Watts 3/4 740 030 FS relief valve used for?

The Watts 3/4 740 030 FS is an ASME Section XIII hot water pressure relief valve used to protect water heaters and storage tanks from overpressure. It automatically opens at the rated set pressure to discharge excess water, preventing system damage. Common in commercial and industrial hot water systems.

What are the specifications of the Watts 3/4 740 030 FS relief valve?

This Watts relief valve has a 3/4 in FNPTF inlet and 1 in FNPTF outlet, with a maximum operating pressure of 75 psi. The body is iron, overall height is 5 5/8 in. It is ASME Section XIII certified for hot water service. The manufacturer part number is 3/4 740 030 FS.

Where to buy the Watts 3/4 740 030 FS relief valve worldwide?

3G Electric supplies the Watts 3/4 740 030 FS relief valve worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time. We source genuine Watts components for your project.

How to install a Watts hot water pressure relief valve?

Install the Watts relief valve in the hot water system's tapping, ensuring the inlet is connected to the tank or heater. The discharge pipe must be routed to a safe drain, with no valves between the valve and drain. Follow local codes and the manufacturer's instructions for proper orientation and support.

Used in

Common applications for Watts
Commercial plumbing – Watts standard capacity water pressure regulators (3/8 LF 26AB) for stabilizing incoming water pressure
Industrial steam systems – Watts 152A series steam pressure regulators for pressure reduction in process and heating lines
Cross-connection control – Watts 757 double check backflow preventers for commercial and industrial water supply protection
Boiler safety – Watts ASME Section XIII temperature and pressure relief valves for overpressure protection in heating systems
Hydronic heating – Watts CP16 pilot-operated pressure regulators for maintaining consistent pressure in steam or water loops
Water hammer mitigation – Watts LF15M2-A water hammer arrestors for absorbing surges in quick-closing valve applications
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Watts Products

3G Electric supplies Watts asme section xiii hot water pressure relief valves. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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