ARI-STEVI® H 485-488

Control valve for heating, ventilation and air-conditioning – 3-way with flanges with electric actuator ARI-PACO 0,85kN

Description

Application:	Heating facilities, AIR conditioning facilities
Medium:	Water, water with cold-protection, etc.

Scope of applications
Valves are used for „controlling the flow of liquids, gases and vapours of fluid group 2 for heating, ventilation and air conditioning“.

The information complies to the Pressure Equipment Directive 2014/68/EU.
It is the responsibility of the machine planner to ensure compliance.
The special markings on the valve must be taken into account.
Refer to the catalogue sheet to see which materials are used in standard versions.
Please contact the supplier or the manufacturer if you have any questions.

Operating principles

ARI servo controlled valves are especially suitable for actuation by electrical actuators.
A parabolic plug is used as a flow restrictor in flow directions A -> AB and AB -> A, and a
slotted plug is used in flow directions B -> AB and AB -> B.
In diverting operation (1 inlet AB, 2 outlets A and B) high actuating forces must be
expected.
Explanation:

Mixing operation

Diverting operation

When used as a straight through control valve, inlet B is fitted with a dummy flange (refer to item 7.3).
Please note the arrow on the valve indicating the flow direction.

Diagram

ARI-STEVI® H 485-488 Control valve for heating, ventilation and air-conditioning - 3-way with flanges with electric actuator ARI-PACO 0,85kN

Fig. 1: Series 485

Fig. 2: Series 486

Fig. 3: Series 487

Fig. 4: Series 488

Technical data

ARI-STEVI® H 485-488 Control valve for heating, ventilation and air-conditioning - 3-way with flanges with electric actuator ARI-PACO 0,85kN

Figure	Nominal pressure	Material	Nominal diameter	Stem sealing	Temperature range
12.485	PN16	EN-JL1040	DN200-250	EPDM-O-ring	0°C to +130°C; with stem heating to -10°C
Other materials and versions on request.
Plug design Guiding Rangeability
standard:	• A Parabolic plug, metal seat • B Parabolic plug, metal seat			double plug guiding	30 : 1
Flow characteristic
standard:	• A linear • B linear
Shut off class (seat / plug leakage classes)
Metal / Metal:	• 0,05% vom Kvs
Technical data for actuator refer to data sheet.

200

250

Kvs-value
Kvs-value	Parabolic plug	Standard	(m³/h)	630	1000
		Reduced	(m³/h)	—	—
Seat-Ø			(mm)	201	251
Travel			(mm)	65

Face-to-face dimension FTF series 1 according to DIN EN 558
L	(mm)	600	730

Flanges acc. to DIN EN 1092-2			Flange holes / -thickness tolerances acc. to DIN 2533/2544/2545
ØD	PN16	(mm)	340	405
ØK	PN16	(mm)	295	355
n x Ød	PN16	(mm)	12 x 22	12 x 26

Heights
H	(mm)	873	919
H1	(mm)	379	439

Weights
BR485	PN16	12/15 kN	(kg)	173	283

Max. allowable differential pressure at flow		(bar)	0,6
12 kN	Closing pressure	(bar)	3,3	2,1
	Operating time	(s)	171
	Operating speed	(mm/s)	0,38
15 kN	Closing pressure	(bar)	4,2	2,7
	Operating time	(s)	171
	Operating speed	(mm/s)	0,38

Pressure-temperature-ratings

Intermediate values for max. permissible operational pressures can be determined by linear interpolation of the given temperature / pressure chart.

acc. to DIN EN 1092-2			-10°C to 120°C	120°C	130°C
EN-JL1040	PN16	(bar)	16	16	15,5

Parts
Pos.	Sp.p.	Description	Fig. 12.485
1		Body	EN-JL1040
1.2	x	Seat ring	1.4021+QT
3	x	O-ring	EPDM
4	x	Retaining ring	FSt
5	x	Plug	1.4021+QT
6	x	O-ring	EPDM
7	x	Stem	1.4571
8.1 8.2 8.3 8.4 8.5 8.6		Screw joint	CW614N
		O-ring	EPDM
		Guide bush	PTFE
		Scraper	Polyurethan
		O-ring	EPDM
		Lubricant
24		Traverse	1.0037
25		Grub screw	St-A2B
26		Groove nut	St-A4G
40		Bottom flange	EN-JS1049
40.1		Seat ring	1.4021+QT
41		Giude bushing	1.4021+QT
42		Stud	1.7218
43		Hexagon nut	1.1181
44		Gasket	Graphite
45		Plug shaft	1.4021+QT
46		Grub screw	A2
	└ Spare parts (Pos. 8.1 – 8.6 will be supplied as unit)

Information / restriction of technical rules need to be observed!

ARI-Valves of EN-JL1040 are not allowed to be operated in systems acc. to TRD 110.

A production permission acc. to TRB 801 No. 45 is available (acc. to TRB 801 No. 45 EN-JL1040 is not allowed.) The engineer, designing a system or a plant, is responsible for the selection of the correct valve.

Resistance and fitness must be verified (contact manufacturer for information, refer to Product overview and Resistance list).