VSxF-2/-3/-4
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Nominal pressure rating Capacity index (kVS) Close-off pressures Leakage rate Port connection Valve body Material Size Trim Stem Plug Suitable medium Controlled water temp. VSxF-2 VSxF-3 GENERAL These small linear valves are used in combination with small electric linear valve actuators and thermoelectric actuators for the control of hot and/or chilled water for fan coil units and small reheaters/recoolers in electric/electronic temperature control systems. FEATURES • Small size allows installation where space is limited • Long stroke results in a high quality characteristic • Soft seat provides low leakage rate and high rangeability • High close-off pressure • Wide standardized range of kVS values • Reduced kVS values in the bypass to facilitate hydronic balancing • Dezincification-resistant yellow brass • Range of fittings available for different connections (soldered, threaded) • Standardized opening direction across the complete VS portfolio (valve stem down to open A-B / A-AB) • Valve diverting usage capability (depending on model) Two-way VSxF-2 Three-way VSxF-3 Three-way with bypass VSxF-4 Two-way: spring-loaded, stem up to close port A to B; Three-way: spring-loaded, stem up to close port A to AB PN16 see tables on pages 2 and 3 see tables on pages 2 and 3 <0.02% of kVS flat sealing connections in standard sizes Brass DN15 (1/2“), DN20 (3/4“), DN25 (1-1/4”) Stainless steel Brass Water, with max. 50% glycol 2...120 °C Modulating valves VSMF-xxx Stroke 6.5 mm Characteristic 2-way: modified equal % 3-way: A-AB modified equal %; B-AB linear ON/OFF valves VSOF-xxx Stroke 2.5 mm ® U.S. Registered Trademark Copyright © 2017 Honeywell Inc. • All rights rese

NAMING KEY TYPE 2 = 2-WAY 3 = 3-WAY 4 = 3-WAY BYPASS CHARACTERISTIC STROKE M = MODULATING (6.5 mm) O = ON/OFF (2.5 mm) V S M F VALVE SIZE S = SMALL CONNECTION TYPE F = FLAT C = CONICAL FLOW CAPACITIES AND CLOSE-OFF PRESSURE RATINGS VSxF-2 Two-Way Valves with Flat Sealing close-off pressure with actuator DN MOD MOD MOD MOD MOD MOD MOD MOD MOD MOD MOD ON-OFF ON-OFF ON-OFF ON-OFF ON-OFF ON-OFF ON-OFF

VSxF-3 Three-Way Valves with Flat Sealing VSxF-4 Four-Way Valves with Flat Sea

Three-Way Valves with Bypass These valves simplify the installation, depends on the layout of the pipework, as the bypass pipe is part of the valve. The information for the normal three-way valves is also valid for this type. The valves are supplied with a screwed-on adjustment cap for manual operation and for protection of the stem. If it should become necessary to flush the system, the valve can be opened between approx. 50% and 75% of the rated kVS with the protection cap attached or fully opened via a connected actuator. Typical Operation All types of valves should be mounted in the...

ACCESSORIES Valves VSxF-2 need two connection sets, valves VSxF-3 need three connection sets, and valves VSxF-4 need four connection sets. Table 1. Two-way valves, dimensions (mm) Table 2. Three-way valves, dimensions (

Table 5. Three-way valves with snap-on, dimensions (mm) Fig. 6. Three-way valves with bypass, dimensions (mm)

VALVE ACTION WITH MT-SERIES SMART-T THERMAL ACTUATORS NC version Fig. 10. Valve action with MT-series Smart-T Thermal Actuators Manufactured for and on behalf of the Environmental & Energy Solutions Division of Honeywell Technologies Sàrl, Rolle, Z.A. La Pièce 16, Switzerland by its Authorized Representative: Subject to change without not