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

3G Electric
RFQ CartGet a QuoteSign inSign up
Watts Pressure Reducing Control Valve: 1 1/2 in Nominal Pipe Size, NPT - Automatic Control Pressure Regulators
WattsAutomatic Control Pressure Regulators

Watts Pressure Reducing Control Valve: 1 1/2 in Nominal Pipe Size, NPT

The WATTS Pressure Reducing Control Valve (MPN 115-1-1/2 TH) is an automatic control pressure regulator with a 1 1/2 in nominal pipe size and NPT connections. It features a ductile iron body and is designed to reduce…

SKU 3G-OTH-449769

Brand
Watts
Item
Pressure Reducing Control Valve: 1 1/2 in Nominal Pipe Size, NPT
Category
Automatic Control Pressure Regulators
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
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

Technical Specifications

Watts
Manufacturer Part Number
115-1-1/2 TH
Type
NPT, 34.7 psi to 214.7 psi
Body Material
Ductile Iron
View Full Spec Sheet

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

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

Product Description

The WATTS Pressure Reducing Control Valve (MPN 115-1-1/2 TH) is an automatic control pressure regulator with a 1 1/2 in nominal pipe size and NPT connections. It features a ductile iron body and is designed to reduce pressure within a range of 34.7 psi to 214.7 psi.

Frequently Asked Questions

What is the WATTS Pressure Reducing Control Valve used for?

The WATTS Pressure Reducing Control Valve (MPN 115-1-1/2 TH) is used to automatically reduce and stabilize downstream water or fluid pressure in industrial piping systems. It is commonly applied in commercial buildings, irrigation networks, and process plants to protect equipment from overpressure and ensure consistent flow.

What are the specifications of the WATTS 115-1-1/2 TH?

The WATTS 115-1-1/2 TH is an automatic control pressure regulator with a 1 1/2 in nominal pipe size and NPT connections. It has a ductile iron body and a pressure-reducing range of 34.7 psi to 214.7 psi. The manufacturer part number is 115-1-1/2 TH, and it is designed for reliable pressure regulation in industrial applications.

Where to buy the WATTS 115-1-1/2 TH worldwide?

You can source the WATTS 115-1-1/2 TH pressure reducing control valve 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 genuine WATTS components for industrial systems.

How to install a WATTS pressure reducing control valve?

Install the WATTS 115-1-1/2 TH valve in a horizontal or vertical pipe run with flow direction matching the arrow on the body. Use thread sealant on NPT connections and install a shut-off valve upstream and downstream for maintenance. Always reference the manufacturer's manual for torque specs and pressure settings.

Used in

Common applications for Watts
Industrial burner gas safety systems — Watts HF2000 filters with GF-series seal kits maintain clean, regulated gas supply to burner pilot and main flame controls
Commercial heating and boiler installations — Modular filter assemblies support preventive maintenance and component replacement without full system shutdown
Process gas delivery pipelines — DN25 through DN125 filter bodies accommodate varying flow rates and inlet pressures across manufacturing and chemical processes
Gas pressure regulation benches — Multi-stage Watts filter platforms integrate with pressure reducers and safety shutoff valves in test and calibration environments
Equipment retrofit and upgrade projects — Available connection sizes and seal kits enable adaptation of newer Watts components into legacy gas control systems
Planned maintenance and spare-parts inventory — Filter seal kits allow facilities to stock consumables in advance, reducing downtime during scheduled gas system servicing

Watts Products

3G Electric supplies Watts automatic control pressure regulators. 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 →

Similar products

Matched by specification & description
WATTS Pressure Reducing Control Valve: 1 1/4 in Nominal Pipe Size, NPT, 34.7 psi to 89.7 psi (MPN 115-1-1/4 TH). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
Watts
WATTS Pressure Reducing Control Valve: 1 1/4 in Nominal Pipe Size, NPT, 34.7 psi to 89.7 psi (MPN 115-1-1/4 TH). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
WATTS Pressure Reducing Control Valve: 2 in Nominal Pipe Size, NPT, 20 psi to 175 psi (MPN 115-2 TH). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
Watts
WATTS Pressure Reducing Control Valve: 2 in Nominal Pipe Size, NPT, 20 psi to 175 psi (MPN 115-2 TH). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
WATTS Pressure Reducing Control Valve: 3 in Nominal Pipe Size, Flanged, 20 psi to 175 psi (MPN 115-3 FL). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
Watts
WATTS Pressure Reducing Control Valve: 3 in Nominal Pipe Size, Flanged, 20 psi to 175 psi (MPN 115-3 FL). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
WATTS Pressure Reducing Control Valve: 4 in Nominal Pipe Size, Flanged, 20 psi to 175 psi (MPN 115-4 FL). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
Watts
WATTS Pressure Reducing Control Valve: 4 in Nominal Pipe Size, Flanged, 20 psi to 175 psi (MPN 115-4 FL). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
WATTS Pressure Reducing Control Valve: 6 in Nominal Pipe Size, Flanged, 20 psi to 175 psi (MPN LFF115). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
Watts
WATTS Pressure Reducing Control Valve: 6 in Nominal Pipe Size, Flanged, 20 psi to 175 psi (MPN LFF115). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
WATTS Pressure Reducing Control Valve: 2 in Nominal Pipe Size, Flanged, 30 psi to 300 psi (MPN M115-2 FL). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
Watts
WATTS Pressure Reducing Control Valve: 2 in Nominal Pipe Size, Flanged, 30 psi to 300 psi (MPN M115-2 FL). Key specifications — Body Material: Ductile Iron; Brand: WATTS.

More from Watts

View all Watts parts →
WATTS Pressure Reducing Control Valve: 6 in Nominal Pipe Size, Flanged, 30 psi to 300 psi (MPN M115-6 FL). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
Watts
WATTS Pressure Reducing Control Valve: 6 in Nominal Pipe Size, Flanged, 30 psi to 300 psi (MPN M115-6 FL). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
WATTS Pressure Reducing Control Valve: 4 in Nominal Pipe Size, Flanged, 30 psi to 300 psi (MPN M115-4 FL). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
Watts
WATTS Pressure Reducing Control Valve: 4 in Nominal Pipe Size, Flanged, 30 psi to 300 psi (MPN M115-4 FL). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
WATTS Pressure Reducing Control Valve: 3 in Nominal Pipe Size, Flanged, 30 psi to 300 psi (MPN M115-3 FL). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
Watts
WATTS Pressure Reducing Control Valve: 3 in Nominal Pipe Size, Flanged, 30 psi to 300 psi (MPN M115-3 FL). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
WATTS Pressure Reducing Control Valve: 8 in Nominal Pipe Size, Flanged, 30 psi to 300 psi (MPN M115-8 FL). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
Watts
WATTS Pressure Reducing Control Valve: 8 in Nominal Pipe Size, Flanged, 30 psi to 300 psi (MPN M115-8 FL). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
WATTS Pressure Reducing Control Valve: 2 1/2 in Nominal Pipe Size, NPT, 20 psi to 175 psi (MPN 115-2-1/2 TH). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
Watts
WATTS Pressure Reducing Control Valve: 2 1/2 in Nominal Pipe Size, NPT, 20 psi to 175 psi (MPN 115-2-1/2 TH). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
WATTS Pressure Reducing Control Valve: 2 1/2 in Nominal Pipe Size, NPT, 30 psi to 300 psi (MPN M115-2-1/2 TH). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
Watts
WATTS Pressure Reducing Control Valve: 2 1/2 in Nominal Pipe Size, NPT, 30 psi to 300 psi (MPN M115-2-1/2 TH). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
WATTS Pressure Reducing Control Valve: 2 in Nominal Pipe Size, NPT, 30 psi to 300 psi (MPN M115-2 TH). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
Watts
WATTS Pressure Reducing Control Valve: 2 in Nominal Pipe Size, NPT, 30 psi to 300 psi (MPN M115-2 TH). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
WATTS Pressure Reducing Control Valve: 3 in Nominal Pipe Size, Flanged, 20 psi to 175 psi (MPN 115-3 TH). Key specifications — Body Material: Ductile Iron; Brand: WATTS.
Watts
WATTS Pressure Reducing Control Valve: 3 in Nominal Pipe Size, Flanged, 20 psi to 175 psi (MPN 115-3 TH). Key specifications — Body Material: Ductile Iron; Brand: WATTS.