Key Features

2/2 Way Normally Closed
Pressure-Assisted Piston Design
DN32 to DN50 Flange Sizes
PN16 Flange Connection
ANSI150Lb Flange Option
JIS10K Flange Option
0.3 Bar Minimum Differential
Steam Pressure to 10 Bar
Air & Water Pressure to 8 Bar
Oil Pressure to 7 Bar
33mm to 53mm Orifice
Up to 686.4 L/min Water Flow
One-Piece BC6 Bronze Body
Stainless Steel Internals
Graphite Filled PTFE Seals
Media Temperature to +180°C
200ms Maximum Switching Time
M17 Industrial Solenoid Coil
Class N 200°C Solenoid Coil
100% Continuous Duty Coil
IP65 With DIN Connector
Designed for Steam Service

Datasheets

Description

Flanged Bronze Steam Solenoid Valve – Queen MTFS

The Queen MTFS Series is a flanged 2/2 way normally closed bronze steam solenoid valve designed for reliable control of steam, hot oils, water, air and compatible gases. Featuring a pressure-assisted piston design with a heavy-duty one-piece BC6 bronze body, the MTFS range delivers high flow performance for industrial steam distribution, boiler houses and process heating systems. Available in DN32, DN40 and DN50 PN16 flanges with optional ANSI 150 lb or JIS 10K drilling, these valves provide dependable long-term operation in demanding industrial applications.

Valve function & operation

Function: 2/2 way normally closed

Operating principle: Pressure-assisted piston

Minimum operating pressure: 0.3 Bar differential

Flange sizes:

DN32, DN40 and DN50 PN16

Optional flange standards:

ANSI 150 lb

JIS 10K

Pressure & flow

Steam: 0.3 to 10 Bar

Air & water: 0.3 to 8 Bar

Oil: 0.3 to 7 Bar

Orifice sizes:

DN32 – 33 mm

DN40 – 43 mm

DN50 – 53 mm

Kv flow factor:

DN32 – 314.6 L/min

DN40 – 429 L/min

DN50 – 686.4 L/min

(Based on water with 1 Bar pressure drop.)

Maximum media temperature: +180°C

Ambient temperature: -20°C to +50°C

Maximum media viscosity: 50 cSt

Opening / closing time: 200 mSec maximum

Mounting position: Coil upright (±15° from vertical)

Construction & materials

Body and flanges: One-piece BC6 bronze casting

Piston: Stainless steel and bronze with PTFE sealing

Internals: Stainless steel

Tube: 304 stainless steel

Seals: PTFE with graphite impregnated PTFE gaskets

Media compatibility

✓ Steam

✓ Hot and cold water

✓ Compressed air

✓ Inert gases

✓ Light oils up to 50 cSt

✓ Fluids compatible with the valve materials

Coil & electrical

Standard coil: M17 19 Watt DC, 35 VA AC (26 VA holding)

Class N (200°C)

DIN 43650A connector

IP65 protection

Voltage options:

24V DC

24V AC

110V AC

230V AC

Applications

Steam distribution pipework

Boiler houses and energy centres

Industrial process heating

Chemical and pharmaceutical processing

Food and beverage manufacturing

Industrial laundries

Steam sterilisation systems

Large industrial heating installations

General industrial process automation

Manufacturing quality

Manufactured using a heavy-duty one-piece BC6 bronze casting with precision-machined stainless steel internal components, the Queen MTFS Series has been engineered for reliable operation in demanding industrial environments. The pressure-assisted piston design provides rapid response together with excellent flow capacity, making these valves ideal for larger steam distribution systems, process heating and central plant installations. PTFE sealing delivers excellent resistance to elevated temperatures, wear and aggressive operating conditions, ensuring dependable long-term service.

Ordering information

Simply select the required flange size, voltage and flange standard before adding the valve to your basket. Standard PN16 flanges are available with optional ANSI 150 lb and JIS 10K drilling to suit your installation.

Related Products & Categories

Steam Solenoid Valves

Replacement Solenoid Coils

Electrical DIN43650 Connectors

Pneumatic Angle Seat Piston Valves for Steam

View Technical Specification

Technical Specification

Brand: Kuhnway Corporation (Queen)

Model: MTFS

Width: 62.00 mm

Height: 206.00 mm

Depth: 172.00 mm

Weight: 3.13 kg

Valve / Product Type: Solenoid Valve

Body Material: Bronze

Voltage: 24vDC, 24vAC, 110vAC, 230VAC

Port Size: 11/4 inch Flange DN32, 11/2 inch Flange DN40, 2 inch Flange DN50

Function: 2/2 Failsafe Closed

Operation: Assisted Lift from 0 Pressure

Pressure: 3 Bar, 3.5 Bar, 4 Bar, 4.5 Bar, 5 Bar, 5.5 Bar, 6 Bar, 6.5 Bar, 7 Bar, 7.5 Bar, 8 Bar, 8.5 Bar, 9 Bar, 10 Bar

Seals: PTFE (Teflon)

Approvals:: IP65

Media: Air, Fluid (Non Aggressive), Gases (Non Aggressive), Oils + Fuels 50cSt Max, Steam, Water

Orifice: 35mm, 45mm, 50mm

Found in these Categories

DN32-50 Bronze steam solenoid valve 0.3-10 Bar N/Closed

£634.14 incl. VAT £528.45 ex. VAT

-33% Was ~~£951.20~~ incl. VAT

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