Siemens – Butterfly Valve VFW41 Series.

Immediately available

Siemens – Butterfly Valve VFW41 Series.

Immediately available

Brand: Siemens

Port: 2-port

Connection: Flange

Nominal Size: DN 40..... 600

PN class: PN 10PN 16PN 6

Valve type: Butterfly valve

The Butterfly Valves PN6/10/16 VFL41 are robustly designed valves for use as control or shut-off valves in heating, ventilation, and air conditioning (HVAC) systems. These valves feature a nodular cast iron housing (EN-GJS-400-18-LT) and are available in sizes DN 40 to DN 600, offering a wide range of applications. They ensure tight-closing performance in accordance with EN 12266-1, leakage rate A, and require no maintenance, providing hassle-free operation. Equipped with electromotoric actuators SAL.., SQL36E or SQL341E.., SQL361E, they offer efficient automation for various HVAC applications.

Product information "Siemens – Butterfly Valve VFW41 Series."

Specification	Details
Valve Housing	Nodular cast iron for durability and corrosion resistance.
Size Range	DN 40 to DN 600, catering to diverse system requirements.
Flow Capacity (kvs)	40 to 31,000 m³/h, ensuring efficient fluid control.
Flange Connection	PN 6, PN 10, PN 16 counter-flanges to ISO 7005 for secure, leak-proof connections.
Leakage Rate	Tight-closing performance in accordance with EN 12266-1, leakage rate A.
Optional Manual Adjuster	ASK41NF.. manual adjuster (up to DN 400) for additional control options.
Actuator Compatibility	Electromotoric actuators SAL.., SQL36E, SQL341E.., SQL361E for HVAC automation.

Feature

Maintenance-Free Operation	Requires no maintenance, reducing downtime and operational costs.
Versatile Application	Suitable for closed and open circuits, boiler and chiller sequencing circuits, and controlling flow to heat exchangers.
Control Options	Compatible with 2-position (open/closed) and 3-position controls, offering flexibility in control strategies.
Robust Construction	Body made of nodular cast iron, ensuring durability and reliability in harsh operating conditions.
Environmental Compliance	Conforms to environmental standards and directives, ensuring environmentally compatible product design.

Functional Data

PN Class	PN 16 to EN1333
Permissible Operating Pressure	1600 kPa (16 bar)
Medium Temperature	-20…120 °C
Flange Connection	PN6, PN10, and PN16 according to ISO 7005
Face to Face Dimension	DIN EN 558, series 20
Angle of Rotation	90°

Part Numbers

Product No.	Stock Number	DN	PN	^Kvs [m3/h]	Actuator flange EN ISO 5211	Velocity of flow ¹⁾ water [m/s]
VFL41.40	S55235-V149	DN40	PN10/16	40	F04	4.5
VFL41.50	S55235-V150	DN50	PN10/16	100	F04	4.5
VFL41.65	S55235-V151	DN65	PN10/16	155	F04	4.5
VFL41.80	S55235-V152	DN80	PN10/16	260	F05	4.5
VFL41.100	S55235-V153	DN100	PN10/16	520	F05	4.5
VFL41.125	S55235-V154	DN125	PN10/16	820	F05	4.5
VFL41.150	S55235-V155	DN150	PN10/16	1600	F07	4.5
VFL41.200	S55235-V156	DN200	PN16	4000	F07	4.5