Danfoss ASV-I DIN15 Female Thread 

 

Product Specifications

Size	Internal Thread	External Thread	Impulse Line
DN 15	–	G 1 A	G 1/16
DN 20	–	Rp 1	G 1/16
DN 25	–	–	G 1/16
DN 32	–	–	G 1/16
DN 40	–	–	G 1/16
DN 50	–	–	G 1/16

Installation Instruction

kVS	1,6	2,5	4	6,3	10	16
Size	DN15	DN20	DN25	DN32	DN40	DN50
Presetting value	kv value
0,20	0,20	0,30	0,40	0,70	1,10	1,70
0,40	0,33	0,57	0,89	1,38	2,11	3,33
0,60	0,48	0,83	1,28	2,00	3,09	4,85
0,80	0,64	1,08	1,60	2,57	4,03	6,27
1,00	0,80	1,30	1,90	3,10	4,90	7,60
1,20	0,94	1,48	2,22	3,61	5,68	8,83
1,40	1,05	1,63	2,55	4,08	6,38	9,97
1,60	1,14	1,76	2,84	4,51	7,02	11,01
1,80	1,22	1,88	3,10	4,89	7,60	11,93
2,00	1,30	2,00	3,31	5,20	8,09	12,70
2,20	1,38	2,12	3,44	5,44	8,49	13,30
2,40	1,47	2,24	3,55	5,62	8,79	13,79
2,60	1,53	2,35	3,66	5,78	9,01	14,21
2,80	1,58	2,45	3,78	5,93	9,21	14,64
3,00	1,60	2,50	3,91	6,10	9,49	15,20
3,20	1,60	2,50	4,00	6,30	10,00	16,00

Adjustment valve ASV-I is used together with riser valve ASV-P/PV to control the differential pressure in risers where the radiator valves have no presetting facilities ➊.

Function

ASV-I gives maximum limitation of water flow (see Setting/adjustment) and the riser can be shut off by turning the knob (❷①) fully clockwise.

• Max. working pressure ………………………………. 16 bar
• Differential pressure
• across valve …………………………………………. 10-150 kPa
• Max. flow temperature ………………………………. 120 °C

Valve size	Internal thread	External thread
DN 15	Rp ½	G ¾ A
DN 20	Rp ¾	G 1 A
DN 25	Rp 1	G 1¼ A
DN 32	Rp 1¼	G 1½ A
DN 40	Rp 1½	G 1¾ A
DN 50	–	G 2¼ A

• Impulse line: G 1⁄16

Installation
ASV-I must be installed in the riser flow pipe. The direction of flow must be from port B to port A ❸. It is recommended that an FV filter be installed in the system supply pipe. The impulse line from the riser valve must be fitted using an 8 mm open-ended spanner. ASV-I must in addition be installed as determined by installation conditions.

Pressure testing

• Max. test pressure ………………………………………. 25 bar

Note: When pressure testing you must secure that both sides of the membrane have the same static pressure. That means the impulse tube must beconnected and any needle valves must be open. If ASV-P/PV is installed in combination with ASV-M both valves can be open or closed (both valves must be in the same position!). If ASV-P/PV is installed in combination with ASV-I both valves must be open. If this instruction is ignored, the membrane of the automatic balancing valve might be damaged.

Flow measurement
The differential pressure across the valve can be measured by Danfoss measuring equipment. When the quick couplings on the measuring instrument are connected, the test plugss can be opened by giving them a half-turn counterclockwise with an 8 mm open-ended spanner. The pressure loss graph for ASV-I ❹ can be used to convert the actual differential pressure across the valve to actual flow. After measurements have been taken, the plugs must be closed again by turning them clockwise before removing the quick couplings.

Note: When measuring sized flow, all radiator valves must be fully open.

Setting/adjustment 5

• Turn the valve knob fully counterclockwise to open the valve. The mark on the knob will now be opposite »0« on the scale ①.
• Turn the valve knob clockwise to the required setting (e.g. for setting 2,2 the knob must be rotated two full turns and then forward to »2« on the scale ②.
• Hold the knob to keep the setting (e.g. 2,2) and using a hexagon socket key turn the spindle fully counterclockwise (until a stop can be felt), ③.
• Turn the valve knob fully counterclockwise so that the mark on the knob is opposite »0« on the scale ①. The valve is now open as many turns from the closed position (2,2) as indicated by the convertion from required flow. To annul the setting, turn the hexagon socket key fully clockwise (until a stop can be felt), ④. Remember, at the same time the knob must be held on its »0« setting.

Insulation (DN 15-40)
The styropor packaging in which the valve is supplied can be used as an insulation jacket for temperatures up to 80 °C.

Danfoss A/S
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Danfoss reserves the right to alter its products without notice. This also applies to products ordered but not delivered, provided that such alterations can be made without changes to form, fit or
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Frequently Asked Questions 

Q: What is the function of the Adjustment valve ASV-I?
A: ASV-I is used with riser valve ASV-P/PV to control differential pressure in risers without presetting facilities. It limits water flow and can shut off the riser by turning the Knob fully clockwise.

Q: What are the recommended installation steps for ASV-I?
A: Install ASV-I in the riser flow pipe with proper flow direction, connect the impulse line correctly, and consider adding an FV filter in the system supply pipe.

Q: What precautions should be taken during pressure testing?
A: Ensure both sides of the membrane have equal static pressure, keep the impulse tube connected, and all needle valves open. Follow specific instructions for valve combinations to prevent damage.

Documents / Resources

Danfoss ASV-I DIN15 Female Thread [pdf] Installation Guide ASV-I DIN15 Female Thread, ASV-I, DIN15 Female Thread, Female Thread, Thread

References

• User Manual