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WATTS RD-104 Cast Iron Primary Roof Drain, 4 in No Hub, Plastic Dome - Primary Roof Drains
WATTSPrimary Roof Drains

WATTS RD-104 Cast Iron Primary Roof Drain, 4 in No Hub, Plastic Dome

The WATTS RD-104 is a cast-iron primary roof drain with a 14 1/8 in overall diameter and 12 1/2 in overall height. It features a 4 in nominal pipe size, no-hub connection, and includes a flashing clamp with integral…

SKU 3G-OTH-739949

Also listed as: RD104 · RD 104

Brand
WATTS
Item
RD-104 Cast Iron Primary Roof Drain, 4 in No Hub, Plastic Dome
Part Number
RD-104
Category
Primary Roof Drains
Available to Order
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Technical specs
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

WATTS
Manufacturer Part Number
RD-104
Type
Cast Iron
Includes
Flashing Clamp with Integral Stop
Overall Ht
12 1/2 in
Dome Material
Plastic
Connection Type
No Hub
Nominal Pipe Size
4 in

Technical Documents

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

Product Description

The WATTS RD-104 is a cast-iron primary roof drain with a 14 1/8 in overall diameter and 12 1/2 in overall height. It features a 4 in nominal pipe size, no-hub connection, and includes a flashing clamp with integral stop. The dome is made of plastic. 3G Electric interprets this demand and delivers the genuine WATTS drain across 14 industrial departments, with specialist depth in combustion, pumps and controls as an authorised distributor.

Frequently Asked Questions

What is the WATTS RD-104 roof drain used for?

The WATTS RD-104 is a primary roof drain designed to remove rainwater from flat or low-slope commercial roofs. Its cast-iron body and plastic dome handle heavy runoff, while the no-hub connection simplifies pipe attachment. 3G Electric supplies this genuine WATTS drain for industrial and commercial roofing applications worldwide.

What are the specifications of the WATTS RD-104 roof drain?

The WATTS RD-104 has a 14 1/8 in overall diameter, 12 1/2 in overall height, and a 4 in nominal pipe size. It features a cast-iron body, plastic dome, no-hub connection, and includes a flashing clamp with integral stop. 3G Electric sources this genuine WATTS drain for global delivery.

Where to buy the WATTS RD-104 roof drain worldwide?

3G Electric supplies the genuine WATTS RD-104 roof drain to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us to order this cast-iron drain with a 4 in no-hub connection and plastic dome.

How to install the WATTS RD-104 roof drain?

Install the WATTS RD-104 by securing the cast-iron body into the roof deck, attaching the no-hub pipe connection, and clamping the flashing with the integral stop. Fit the plastic dome over the drain. Follow local plumbing codes and manufacturer guidelines. 3G Electric supplies this genuine WATTS drain for global projects.

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 primary roof drains. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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