Danfoss DSV 2 change-over (double stop) valve, Weld flange inlet x G-type, 1 in, for 2 x SFV 20 safety valves (code 148F3009)

Danfoss DSV 2 3-way change-over (double stop) valve, code 148F3009, 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-type, 1 in; the two safety-valve branch connections are Weld flange, 25 mm (1 in) and the matched safety-valve pair is 2 x SFV 20. 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 148F3009.

Type

DSV 2 change-over / double stop valve (3-way) Code number: 148F3009 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-type, 1 in Safety-valve branch connections: Weld flange, 25 mm (1 in) Matched safety-valve pair: 2 x SFV 20 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: 5.9 kg Gross weight: 11.774 kg EAN: 5702428242509

Size / Series

Weld flange, 25 mm (1 in) inlet x G-type, 1 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