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Mcdonnell & Miller Series 27-W Valve (M&M) - Liquid Level Controls
Mcdonnell & MillerLiquid Level Controls

Mcdonnell & Miller Series 27-W Valve (M&M)

McDonnell & Miller Liquid Level Controls.

SKU 3G-OTH-02730

Also listed as: 27W · 27 W

Brand
Mcdonnell & Miller
Item
Series 27-W Valve
Category
Liquid Level Controls
Available to Order
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Documents

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

Product Description

McDonnell & Miller Liquid Level Controls.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the McDonnell & Miller 3G-OTH-02730 liquid level control used for?

The McDonnell & Miller 3G-OTH-02730 is used to monitor and control liquid levels in industrial boilers, tanks, and vessels. It activates alarms or pumps when water levels drop, preventing dry-fire damage. Common in steam boiler systems, HVAC, and process industries requiring reliable low-water cutoff or feedwater control.

What are the specifications of the McDonnell & Miller 3G-OTH-02730?

The 3G-OTH-02730 features a brass body with a Monel valve seat and EPDM disc. Maximum working pressure is 35 psi (2.5 kg/cm²), and maximum supply pressure is 100 psi (7 kg/cm²). It requires a minimum liquid level to operate. These specs make it suitable for moderate-pressure steam and hot water systems.

Where to buy the McDonnell & Miller 3G-OTH-02730 in Singapore?

You can source the McDonnell & Miller 3G-OTH-02730 through 3G Electric in Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this liquid level control. We provide genuine McDonnell & Miller components for industrial applications.

How to install the McDonnell & Miller 3G-OTH-02730 liquid level control?

Install the 3G-OTH-02730 in a vertical position on the boiler or tank using the threaded connection. Ensure the minimum liquid level is maintained for proper operation. Follow McDonnell & Miller guidelines for wiring and piping. Always isolate the system and depressurize before installation to avoid damage or injury.

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.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
Brass check valve for pneumatic systems, allowing flow in one direction and preventing backflow. Suitable for in-tank installation. Features a 3/4 in OD and 1/2 in male NPT connection. Rated for maximum pressure of 450 psi
CONTROL DEVICES
Brass check valve for pneumatic systems, allowing flow in one direction and preventing backflow. Suitable for in-tank installation. Features a 3/4 in OD and 1/2 in male NPT connection. Rated for maximum pressure of 450 psi
Brass check valve with 3/4 in tube and 3/4 in MPT connections. Rated for maximum pressure of 450 psi. Used in pneumatic systems to allow flow in one direction and prevent backflow, commonly installed in-tank or inline
CONTROL DEVICES
Brass check valve with 3/4 in tube and 3/4 in MPT connections. Rated for maximum pressure of 450 psi. Used in pneumatic systems to allow flow in one direction and prevent backflow, commonly installed in-tank or inline
Soft seat pneumatic safety valve with brass body and silicone seat. Features 1/2 in (M)NPT inlet and preset relief at 250 psi. Used to protect compressed air systems from overpressure in industrial pneumatic circuits, air compressors, and distribution lines
CONTROL DEVICES
Soft seat pneumatic safety valve with brass body and silicone seat. Features 1/2 in (M)NPT inlet and preset relief at 250 psi. Used to protect compressed air systems from overpressure in industrial pneumatic circuits, air compressors, and distribution lines
Brass check valve with 3/4 in tube connection and 1 in male pipe thread (MPT) port. Rated for maximum pressure of 450 psi. Used in pneumatic systems to prevent backflow of air or gas, suitable for in-tank mounting in industrial air receivers and compressors
CONTROL DEVICES
Brass check valve with 3/4 in tube connection and 1 in male pipe thread (MPT) port. Rated for maximum pressure of 450 psi. Used in pneumatic systems to prevent backflow of air or gas, suitable for in-tank mounting in industrial air receivers and compressors
Brass check valve with 1/2 in tube connection and 1/2 in male pipe thread. Rated for maximum pressure of 450 psi. Used in pneumatic systems to allow flow in one direction and prevent backflow, commonly installed in tank applications such as air receivers or compressor tanks
CONTROL DEVICES
Brass check valve with 1/2 in tube connection and 1/2 in male pipe thread. Rated for maximum pressure of 450 psi. Used in pneumatic systems to allow flow in one direction and prevent backflow, commonly installed in tank applications such as air receivers or compressor tanks
Brass-bodied hard seat safety valve with 1/2 in male NPT inlet and factory preset opening at 100 psi. Used in compressed air systems to automatically relieve overpressure, protecting downstream equipment and piping
CONTROL DEVICES
Brass-bodied hard seat safety valve with 1/2 in male NPT inlet and factory preset opening at 100 psi. Used in compressed air systems to automatically relieve overpressure, protecting downstream equipment and piping

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