Danfoss DSV 2 change-over (double stop) valve, Weld flange inlet x G thread flange, 3/4 in, for 2 x SFA 15 safety valves

Danfoss DSV 2 3-way change-over (double stop) valve, code 148F3007, Change-over valve, DSV 2, Weld flange. DSV 1 and DSV 2 are 3-way change-over (double stop) valves designed for industrial refrigeration plant. They are used with double safety-valve systems: the change-over valve isolates one of two parallel safety relief valves so it can be inspected or replaced while the second valve keeps the vessel protected, without shutting down the plant. The valve cone gives perfect closing even at minimum torque, accepts flow in both directions and is easy to dismantle for servicing. Housing and bonnet are special cold-resistant (low-temperature) steel meeting the Pressure Equipment Directive and international classification-authority requirements; a Teflon tightening ring seals the cone and the polished stainless-steel spindle runs in an O-ring seal. All valves carry a vented cap and nipple/flange connections that permit easy inspection or replacement of the safety valves, and are prepared for seal-wire sealing to prevent unauthorised operation. Applicable to HCFC, non-flammable HFC, R717 (ammonia) and R744 (CO2). Maximum operating pressure 40 bar g (580 psig); temperature range -50 to +100 C (-58 to +212 F). When fitted with the matched pair of safety valves the assembly meets EN 13136 (max 3% pressure drop in the upstream line). This code has inlet connection Weld flange, 25 mm (1 in) and outlet G thread flange, 3/4 in; the two safety-valve branch connections are Weld nipples, 20 mm (3/4 in) and the matched safety-valve pair is 2 x SFA 15. Nominal bore DN 32 (1 1/4 in); Kv 30 m3/h (Cv 34.8 gal/min); maximum working pressure 40 bar g (580 psig); media temperature -50 to 100 C (-58 to 212 F). PED 2014/68/EU conformity assessment Art. 4, par. 3, fluid group I. Specifications per Danfoss store code 148F3007.

Type

DSV 2 change-over / double stop valve (3-way) Code number: 148F3007 Function: isolates one of two parallel safety relief valves for inspection/replacement while the other stays in service Inlet connection: Weld flange, 25 mm (1 in) Outlet connection: G thread flange, 3/4 in Safety-valve branch connections: Weld nipples, 20 mm (3/4 in) Matched safety-valve pair: 2 x SFA 15 Nominal bore: DN 32 (1 1/4 in) Kv value: 30 m3/h Cv value: 34.8 gal/min Max. working pressure: 40 bar g (580 psig) Media temperature range: -50 to 100 C (-58 to 212 F) Housing/bonnet material: special low-temperature steel Spindle: polished stainless steel with O-ring seal Cone seal: Teflon tightening ring Applicable media: HCFC, non-flammable HFC, R717 (ammonia), R744 (CO2) Compliance: EN 13136 (max 3% upstream pressure drop with matched safety valves) Conformity assessment: PED 2014/68/EU, Art. 4, par. 3, fluid group I Approvals: CE, EAC Net weight: 9.1 kg Gross weight: 10 kg EAN: 5702428242523

Size / Series

Weld flange, 25 mm (1 in) inlet x G thread flange, 3/4 in outlet

Material

Special low-temperature steel housing/bonnet; polished stainless-steel spindle; Teflon cone seal

Thread Standard

ISO 228/1 (G outlet)

Pressure Rating

40 bar g (580 psig) max working pressure

Temperature Range

-50 to 100 C

HS Code

8481.80