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

Mcdonnell & Miller Series PFC Liquid Level Controls (M&M)
Mcdonnell & MillerLiquid Level Controls

Mcdonnell & Miller Series PFC Liquid Level Controls (M&M)

Note: listed by manufacturer as obsolete/discontinued.

SKU 3G-OTH-02761

Brand
Mcdonnell & Miller
Item
Series PFC Liquid Level Controls
Category
Liquid Level Controls
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 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

Mcdonnell & Miller Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

Note: listed by manufacturer as obsolete/discontinued.

Frequently Asked Questions

What is the McDonnell & Miller PFC liquid level control used for?

The McDonnell & Miller PFC provides an air pressure signal proportional to the liquid level, making it suitable for boiler feedwater and process tank level monitoring. It is available as Direct Acting or Reverse Acting and uses a float-operated armature to sense liquid level.

What are the specifications of the McDonnell & Miller PFC?

The McDonnell & Miller PFC is a float-operated liquid level control that delivers an air pressure signal proportional to the liquid level. It comes in Direct Acting or Reverse Acting configurations. Note that the manufacturer lists this model as obsolete or discontinued.

Where to buy the McDonnell & Miller PFC in Singapore?

You can source the McDonnell & Miller PFC through 3G Electric in Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on this obsolete model.

How to select the correct McDonnell & Miller PFC for my application?

To select the correct McDonnell & Miller PFC, determine whether you need Direct Acting (increasing pressure with rising level) or Reverse Acting (decreasing pressure with rising level). Verify the air pressure range and pipe connection size match your system. Since this model is discontinued, consult 3G Electric for suitable alternatives.

Used in

Common applications for Mcdonnell & Miller
Steam boiler low-water cutoff — McDonnell & Miller inline flow switches (e.g., FS-1) for automatic burner shutdown
Cooling water flow monitoring — McDonnell & Miller insertion-style switches (e.g., FS4-3D) in large-diameter pipes
Hazardous-area process lines — McDonnell & Miller FS7-4E with NEMA 7/9 enclosure for Class I, Div 1 locations
HVAC chilled water systems — McDonnell & Miller FS6-1 inline switch for pump flow verification
Industrial wastewater treatment — McDonnell & Miller FS4-3S stainless steel switch for corrosive fluid flow detection
Boiler feedwater control — McDonnell & Miller FS8-WJ with BSP connections for international installations

Mcdonnell & Miller Products

3G Electric supplies Mcdonnell & Miller liquid level controls. 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
Maintains consistent water level regardless of pressure Water column with integral tappings for gauge glass and tri-cock installations For boilers of any
McDonnell & Miller
Maintains consistent water level regardless of pressure Water column with integral tappings for gauge glass and tri-cock installations For boilers of any
For boiler receiver tanks Float operated Proportional feed action Soft seat provides positive seal Seal between float chamber and valve chamber is not
McDonnell & Miller
For boiler receiver tanks Float operated Proportional feed action Soft seat provides positive seal Seal between float chamber and valve chamber is not
For steam and hot water boilers with cold water feed Continuous maintenance of minimum safe water level, independent of electrical service Proportional feed
McDonnell & Miller
For steam and hot water boilers with cold water feed Continuous maintenance of minimum safe water level, independent of electrical service Proportional feed
Paddle-type flow switch for liquids, installed inline in 1-inch pipe systems. Detects flow or no-flow conditions for pump protection, boiler low-water cutoff, and cooling water monitoring. Features 1-inch NPT connection and AC contact rating of 3.7 A at 240V full load
McDonnell & Miller
Paddle-type flow switch for liquids, installed inline in 1-inch pipe systems. Detects flow or no-flow conditions for pump protection, boiler low-water cutoff, and cooling water monitoring. Features 1-inch NPT connection and AC contact rating of 3.7 A at 240V full load
Brass inline liquid flow switch for 3/4 in pipe with 3/4 in NPT connections. Detects flow or no-flow conditions in piping systems. Contact rating: 22.2 A @ 240V (Locked Rotor). Operating temperature range: 32°F to 250°F
McDonnell & Miller
Brass inline liquid flow switch for 3/4 in pipe with 3/4 in NPT connections. Detects flow or no-flow conditions in piping systems. Contact rating: 22.2 A @ 240V (Locked Rotor). Operating temperature range: 32°F to 250°F
For steam and hot water boilers with cold water feed Continuous maintenance of minimum safe water level and independent of electrical service Proportional feed
McDonnell & Miller
For steam and hot water boilers with cold water feed Continuous maintenance of minimum safe water level and independent of electrical service Proportional feed

More from McDonnell & Miller

View all McDonnell & Miller parts
McDonnell & Miller
McDonnell & Miller
Stainless steel Series 316 material PTFE coated probe ends provide protection from false signals [available on 24-72 (610 1829mm)
One to five probes available for multiple functions. For use on tanks and vessels vented and at atmospheric pressure only. Up to 3 probe rods can be joined for
McDonnell & Miller
One to five probes available for multiple functions. For use on tanks and vessels vented and at atmospheric pressure only. Up to 3 probe rods can be joined for
Maximum Water Temperature: 250 F (121 C) Maximum Water Pressure: 160 psi (11.2kg/cm 2 ) Maximum Steam Pressure: 15 psig (1.0 kg/cm 2 ) Can be installed in
McDonnell & Miller
Maximum Water Temperature: 250 F (121 C) Maximum Water Pressure: 160 psi (11.2kg/cm 2 ) Maximum Steam Pressure: 15 psig (1.0 kg/cm 2 ) Can be installed in
NEMA 1 Enclosure Maximum Temperature 406 F (208 C) Maximum Pressure 250 psig (17.6 kg/cm) For single sensor applications with high-pressure environments
McDonnell & Miller
NEMA 1 Enclosure Maximum Temperature 406 F (208 C) Maximum Pressure 250 psig (17.6 kg/cm) For single sensor applications with high-pressure environments
NEMA 4X chamber enclosure and listed Maximum steam pressure 250 psig (17.6 kg/cm 2 )
McDonnell & Miller
NEMA 4X chamber enclosure and listed Maximum steam pressure 250 psig (17.6 kg/cm 2 )
Series-RS-X-BR-1: NEMA 4X Enclosure For sophisticated multi-level control in tanks, boilers and hydronic systems Remote sensors, which thread into the top of
McDonnell & Miller
Series-RS-X-BR-1: NEMA 4X Enclosure For sophisticated multi-level control in tanks, boilers and hydronic systems Remote sensors, which thread into the top of
Materials of construction Brass Monel valve seat, EPDM disc Maximum pressure 35 psi (2.5 kg/cm 2 ) Maximum supply pressure 100 psi (7 kg/cm 2 ) Minimum liquid
McDonnell & Miller
Materials of construction Brass Monel valve seat, EPDM disc Maximum pressure 35 psi (2.5 kg/cm 2 ) Maximum supply pressure 100 psi (7 kg/cm 2 ) Minimum liquid