We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

3G Electric
⌕
RFQ CartGet a QuoteSign inSign up
Watts Float Valve with Threaded Outlet: For Water Media, Straight Valve Body - General Service Float Valve Bodies
WattsGeneral Service Float Valve Bodies

Watts Float Valve with Threaded Outlet: For Water Media, Straight Valve Body

The WATTS ST500 is a general service float valve body designed for water media, featuring a straight valve body style for horizontal piping. It has a flow rate of 31 gpm @ 100 psi, with 1/4"-20 rod thread and…

SKU 3G-OTH-438787

Brand
Watts
Item
Float Valve with Threaded Outlet: For Water Media, Straight Valve Body
Category
General Service Float Valve Bodies
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
ST500
Type
Straight Valve Body, Horizontal Piping, NPT
Mounting
Horizontal Piping
Flow Rate
31 gpm @ 100 psi
For Media
Water
Rod Thread
1/4"-20
Valve Series
ST500
Valve Body Style
Straight
Arm Adjustability
Adjustable
Inlet Connection Type
MNPT
Outlet Connection Type
MNPT
Connection Type - Side 1
NPT
Connection Type - Side 2
NPT
Connection Gender - Side 1
Male
Connection Gender - Side 2
Male
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 ST500 is a general service float valve body designed for water media, featuring a straight valve body style for horizontal piping. It has a flow rate of 31 gpm @ 100 psi, with 1/4"-20 rod thread and adjustable arm. Connections are male NPT on both inlet and outlet sides.

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 general service float valve bodies. 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 Float Valve with Threaded Outlet: For Water Media, Straight Valve Body, Horizontal Piping, NPT (MPN ST375). Key specifications — Mounting: Horizontal Piping; Arm Adjustability: Adjustable; Connection Gender - Side 1: Male; Connection Gender - Side 2: Male; Brand: WATTS; Connection Type - Side 1: NPT; Connection Type - Side 2: NPT; Flow Rate: 14 gpm @ 50 psi.
Watts
WATTS Float Valve with Threaded Outlet: For Water Media, Straight Valve Body, Horizontal Piping, NPT (MPN ST375). Key specifications — Mounting: Horizontal Piping; Arm Adjustability: Adjustable; Connection Gender - Side 1: Male; Connection Gender - Side 2: Male; Brand: WATTS; Connection Type - Side 1: NPT; Connection Type - Side 2: NPT; Flow Rate: 14 gpm @ 50 psi.
WATTS Heavy Duty Float Valve: For Water Media, Straight Valve Body, Horizontal Piping, Bronze, FNPT (MPN 2000). Key specifications — Mounting: Horizontal Piping; Arm Adjustability: Adjustable; Connection Gender - Side 1: Female; Connection Gender - Side 2: Female; Brand: WATTS; Connection Type - Side 1: NPT; Connection Type - Side 2: NPT; Flow Rate: 250 gpm @ 50 psi.
Watts
WATTS Heavy Duty Float Valve: For Water Media, Straight Valve Body, Horizontal Piping, Bronze, FNPT (MPN 2000). Key specifications — Mounting: Horizontal Piping; Arm Adjustability: Adjustable; Connection Gender - Side 1: Female; Connection Gender - Side 2: Female; Brand: WATTS; Connection Type - Side 1: NPT; Connection Type - Side 2: NPT; Flow Rate: 250 gpm @ 50 psi.
WATTS Float Valve: For Water Media, Bronze, 100 gpm @ 50 psi to 150 gpm @ 100 psi, 1 in Pipe Size (MPN 0780011). Key specifications — Arm Adjustability: Adjustable; Connection Gender - Side 1: Female; Connection Gender - Side 2: Male; Brand: WATTS; Connection Type - Side 1: NPT; Connection Type - Side 2: NPT; Flow Rate: 100 gpm @ 50 psi to 150 gpm @ 100 psi; For Media: Water.
Watts
WATTS Float Valve: For Water Media, Bronze, 100 gpm @ 50 psi to 150 gpm @ 100 psi, 1 in Pipe Size (MPN 0780011). Key specifications — Arm Adjustability: Adjustable; Connection Gender - Side 1: Female; Connection Gender - Side 2: Male; Brand: WATTS; Connection Type - Side 1: NPT; Connection Type - Side 2: NPT; Flow Rate: 100 gpm @ 50 psi to 150 gpm @ 100 psi; For Media: Water.
WATTS Float Valve Assembly: For Water Media, Straight Valve Body, Cylindrical, Bulkhead, PVC, MNPT (MPN RL-600). Key specifications — Mounting: Bulkhead; Arm Adjustability: Adjustable; Connection Gender - Side 1: Male; Connection Gender - Side 2: Female; Brand: WATTS; Connection Type - Side 1: NPT; Connection Type - Side 2: NPT; Flow Rate: 6.5 gpm.
Watts
WATTS Float Valve Assembly: For Water Media, Straight Valve Body, Cylindrical, Bulkhead, PVC, MNPT (MPN RL-600). Key specifications — Mounting: Bulkhead; Arm Adjustability: Adjustable; Connection Gender - Side 1: Male; Connection Gender - Side 2: Female; Brand: WATTS; Connection Type - Side 1: NPT; Connection Type - Side 2: NPT; Flow Rate: 6.5 gpm.

More from Watts

View all Watts parts →
WATTS Heavy Duty Float Valve: For Water Media, Straight Valve Body, Bulkhead, Bronze, 1 1/4 in FNPT (MPN 1250). Key specifications — Mounting: Bulkhead; Arm Adjustability: Adjustable; Connection Gender - Side 1: Female; Connection Gender - Side 2: Female; Brand: WATTS; Connection Type - Side 1: NPT; Connection Type - Side 2: NPT; Flow Rate: 348 gpm @ 100 psi.
Watts
WATTS Heavy Duty Float Valve: For Water Media, Straight Valve Body, Bulkhead, Bronze, 1 1/4 in FNPT (MPN 1250). Key specifications — Mounting: Bulkhead; Arm Adjustability: Adjustable; Connection Gender - Side 1: Female; Connection Gender - Side 2: Female; Brand: WATTS; Connection Type - Side 1: NPT; Connection Type - Side 2: NPT; Flow Rate: 348 gpm @ 100 psi.
WATTS Float Valve: For Water Media, Straight Valve Body, Bulkhead, Bronze, 1/2 in Pipe Size, Flange (MPN HD-500-12). Key specifications — Mounting: Bulkhead; Arm Adjustability: Adjustable; Connection Gender - Side 1: Male; Connection Gender - Side 2: Male; Brand: WATTS; Connection Type - Side 1: Flange; Connection Type - Side 2: Flange; Flow Rate: 20 gpm @ 50 psi.
Watts
WATTS Float Valve: For Water Media, Straight Valve Body, Bulkhead, Bronze, 1/2 in Pipe Size, Flange (MPN HD-500-12). Key specifications — Mounting: Bulkhead; Arm Adjustability: Adjustable; Connection Gender - Side 1: Male; Connection Gender - Side 2: Male; Brand: WATTS; Connection Type - Side 1: Flange; Connection Type - Side 2: Flange; Flow Rate: 20 gpm @ 50 psi.
WATTS Float Valve with Threaded Outlet: For Water Media, Straight Valve Body, Bulkhead, Bronze, MNPT (MPN ST750). Key specifications — Mounting: Bulkhead; Arm Adjustability: Adjustable; Connection Gender - Side 1: Male; Connection Gender - Side 2: Male; Brand: WATTS; Connection Type - Side 1: NPT; Connection Type - Side 2: NPT; Flow Rate: 40 gpm @ 50 psi.
Watts
WATTS Float Valve with Threaded Outlet: For Water Media, Straight Valve Body, Bulkhead, Bronze, MNPT (MPN ST750). Key specifications — Mounting: Bulkhead; Arm Adjustability: Adjustable; Connection Gender - Side 1: Male; Connection Gender - Side 2: Male; Brand: WATTS; Connection Type - Side 1: NPT; Connection Type - Side 2: NPT; Flow Rate: 40 gpm @ 50 psi.
WATTS Float Valve: For Water Media, Straight Valve Body, Bulkhead, Bronze, 3/4 in Pipe Size, Flange (MPN HD 750 12). Key specifications — Mounting: Bulkhead; Arm Adjustability: Adjustable; Connection Gender - Side 1: Male; Connection Gender - Side 2: Male; Brand: WATTS; Connection Type - Side 1: Flange; Connection Type - Side 2: IPS; Flow Rate: 60 gpm @ 100 psi.
Watts
WATTS Float Valve: For Water Media, Straight Valve Body, Bulkhead, Bronze, 3/4 in Pipe Size, Flange (MPN HD 750 12). Key specifications — Mounting: Bulkhead; Arm Adjustability: Adjustable; Connection Gender - Side 1: Male; Connection Gender - Side 2: Male; Brand: WATTS; Connection Type - Side 1: Flange; Connection Type - Side 2: IPS; Flow Rate: 60 gpm @ 100 psi.
WATTS Heavy Duty Float Valve: For Water Media, Straight Valve Body, Float Valve Body, Bronze, FNPT (MPN 1500). Key specifications — Mounting: Horizontal Piping; Arm Adjustability: Adjustable; Connection Gender - Side 1: Female; Connection Gender - Side 2: Female; Brand: WATTS; Connection Type - Side 1: NPT; Connection Type - Side 2: NPT; Flow Rate: 348 gpm @ 100 psi.
Watts
WATTS Heavy Duty Float Valve: For Water Media, Straight Valve Body, Float Valve Body, Bronze, FNPT (MPN 1500). Key specifications — Mounting: Horizontal Piping; Arm Adjustability: Adjustable; Connection Gender - Side 1: Female; Connection Gender - Side 2: Female; Brand: WATTS; Connection Type - Side 1: NPT; Connection Type - Side 2: NPT; Flow Rate: 348 gpm @ 100 psi.
WATTS Nozzle and Arm Assembly: For Water Media, Straight Valve Body, Brass, 6.5 gpm, 1/2 in FNPT (MPN Rl 600 V). Key specifications — Arm Adjustability: Adjustable; Connection Gender - Side 1: Female; Connection Gender - Side 2: Male; Brand: WATTS; Connection Type - Side 1: NPT; Connection Type - Side 2: NPT; Flow Rate: 6.5 gpm; For Media: Water.
Watts
WATTS Nozzle and Arm Assembly: For Water Media, Straight Valve Body, Brass, 6.5 gpm, 1/2 in FNPT (MPN Rl 600 V). Key specifications — Arm Adjustability: Adjustable; Connection Gender - Side 1: Female; Connection Gender - Side 2: Male; Brand: WATTS; Connection Type - Side 1: NPT; Connection Type - Side 2: NPT; Flow Rate: 6.5 gpm; For Media: Water.
WATTS Float Valve with Threaded Outlet: For Water Media, Straight Valve Body, Float Valve Body, MNPT (MPN ST1000). Key specifications — Mounting: Bulkhead; Arm Adjustability: Adjustable; Connection Gender - Side 1: Male; Connection Gender - Side 2: Male; Brand: WATTS; Connection Type - Side 1: NPT; Connection Type - Side 2: NPT; Flow Rate: 100 gpm @ 50 psi.
Watts
WATTS Float Valve with Threaded Outlet: For Water Media, Straight Valve Body, Float Valve Body, MNPT (MPN ST1000). Key specifications — Mounting: Bulkhead; Arm Adjustability: Adjustable; Connection Gender - Side 1: Male; Connection Gender - Side 2: Male; Brand: WATTS; Connection Type - Side 1: NPT; Connection Type - Side 2: NPT; Flow Rate: 100 gpm @ 50 psi.
WATTS Valve, Heavy Duty Float, 2000 Btu, 2": For Water Media, Straight Valve Body, Float Valve Body (MPN 0780014). Key specifications — Arm Adjustability: Adjustable; Connection Gender - Side 1: Female; Connection Gender - Side 2: Male; Brand: WATTS; Connection Type - Side 1: NPT; Connection Type - Side 2: NPT; Flow Rate: 250 gpm; For Media: Water.
Watts
WATTS Valve, Heavy Duty Float, 2000 Btu, 2": For Water Media, Straight Valve Body, Float Valve Body (MPN 0780014). Key specifications — Arm Adjustability: Adjustable; Connection Gender - Side 1: Female; Connection Gender - Side 2: Male; Brand: WATTS; Connection Type - Side 1: NPT; Connection Type - Side 2: NPT; Flow Rate: 250 gpm; For Media: Water.