Litaba
pata
Danfoss SV 1, SV 3 Float Valve
Litaelo tsa Tšebeliso ea Sehlahisoa
- Used for small, flooded evaporators with minimal liquid level variations.
- Liquid level fall causes the float to move downwards, increasing liquid injection.
- Ensure proper sizing of the liquid inlet line for optimal performance.
- Refer to the suggested dimensions for the liquid and balance pipe in the Pipe dimensions section.
- Used when the liquid level rises, drawing excess liquid away.
- Be cautious of flash gas formation due to subcooling and pressure drops with fluorinated refrigerants.
- Properly size the liquid line to prevent pressure drops that can reduce valve capacity and lead to liquid accumulation
Selelekela
For industrial refrigeration, liquid level regulation
- Several float valves are available for Industrial refrigeration liquid level control in the product group “Liquid level regulating valves”, such as HFI and SV series.
- The SV series contains the following types: SV 1, SV 3, SV 4, SV 5 and SV 6, some of which can be delivered as dedicated “E” versions for hydrocarbon applications.
- The SV 1 and SV 3 can be used separately as a modulating liquid level regulator in refrigerating, freezing and air conditioning systems for ammonia or fluorinated refrigerants.
- However, in most cases, the SV is used as a float pilot valve for the main expansion valve type PMFH.
- The SV 1 and SV 3 are used as liquid level regulators in either low-pressure applications or in high-pressure applications.
- Adaptation to the specific application is done by the orientation of the valve and thereby the float functions
Portfolio e felileview
- The SV 1 and SV 3 can be used separately as a modulating liquid level regulator in refrigerating, freezing and air conditioning systems for ammonia or fluorinated refrigerants.
- However, in most cases, the SV is used as a float pilot valve for the main expansion valve type PMFH.
- Several float valves are available for Industrial refrigeration liquid level control in the product group “Liquid level regulating valves”, such as HFI and SV series. The SV series contains the following types: SV 1, SV 3, SV 4, SV 5 and SV 6, some of which can be delivered as dedicated “E” versions for hydrocarbon application.
Table 1: Portfolio overview
| Tlhaloso | Litekanyetso |
| Lihatsetsi | R134a, R22, R401A, R402A, R404A, R407A, R407B, R407C, R407F, R409A, R421A, R502, R507, R717 |
| Kopo | High Pressure Liquid Level Control System (HP LLRS) Low Pressure Liquid Level Control System (LP LLRS) |
| Liphetolelo tsa moralo | |
| Mocheso oa mocheso oa mecha ea litaba | -50 °C -65 °C |
| P-band [mm] | 35 limilimithara |
| MWP [bar] | 28 bar |
| Kv value [m3/h] | 0.06 for SV 1
0.14 for SV 3 |
| Bokhoni bo lekantsoeng (kW) | SV1: 25
SV3: 64 (R717 +5/32 °C, Tl = 28 °C) |
Lisebelisoa
SV (L), low-pressure function
- SV (L) is used for small, flooded evaporators, where only slight variations in the liquid level can be accepted.
- When the liquid level falls, the float pos. (2) moves downwards. This draws the needle position. (15) away from the orifice and the amount of liquid injected is increased.
- The liquid inlet line is mounted on the nipple position. (C), should be dimensioned in such a way that acceptable liquid velocities and pressure drops are obtained.
- This is particularly important when the liquid is only slightly subcooled, since valve capacity is reduced considerably if flashgas occurs in the liquid ahead of the orifice and wear is strongly increased.
- See the suggested dimensions for the liquid line in “Pipe dimensions”. Refer to section Dimensions and weights.
- The flashgas quantity which occurs on expansion is removed through the balance pipe from pos. (D).
- On a refrigeration plant using fluorinated refrigerants, slight subcooling and a large pressure drop can give a flash gas quantity of approximately. 50% of the injected liquid quantity.
- Therefore, the pressure drop in this balance pipe must be kept at a minimum, since there will otherwise be a risk that the liquid level in the evaporator will vary to an unacceptable degree as a function of evaporator load.
- The absolute difference between the liquid level of the evaporator and the SV valve will be too large.
- See the suggested dimensions for the balance pipe in “Pipe dimensions”. Refer to section Dimensions and weights
SV (H), high-pressure function
- When the liquid level rises, the float pos. (2) moves upwards. This draws the needle pos. (15) away from the orifice and the excess liquid is drawn away.
- On a refrigeration plant using fluorinated refrigerants, slight subcooling and a large pressure drop can, as already mentioned, cause the formation of a large amount of flashgas.
- This mixture of liquid and vapor has to pass through the nipple pos. (C) and out into the liquidline.
- If the dimensions of the line are too small, a pressure drop will occur, which can reduce the capacity of the SV (H) valve considerably. This will mean a risk of inadvertent liquid accumulation in the condenser or receiver.
See the suggested dimensions for the liquid line in “Pipe dimensions”. Refer to section Dimensions and weights
- The connection nipple (C) can be mounted either in P or in S
HLOKOMELA
- With a P-connection, an SV with a closed float orifice will have a capacity that corresponds to the degree of opening of the adjustable throttle valve 10.
HLOKOMELA
- With S-connection,the throttle valve 10 will function as a pre-orifice on SV (L) and as a post orifice on SV (H)
SV 1 – 3 used as a high-pressure defrost drain float valve
SV 1 – SV 3 can be used as a defrost drain float valve, when one balance pipe is sealed off and the liquid level regulator is mounted with a special kit (code no. 027B2054) consisting of:
- Special orifice and orifice needle with a larger kv-value of 0.28 m3/h.
- Gas drain pipe
HLOKOMELA
- SV 1 – 3 with special kit mounted as defrost drain float valve on a fooded evaporator with hotgas defrost.
Mecha ea litaba
Lihatsetsi
- The SV 1 and SV 3 can be used separately as a modulating liquid level regulator in refrigerating, freezing and air conditioning systems for ammonia or fluorinated refrigerants.
- SV float valves are currently authorized by Danfoss for use with several R numbers HCFC, non-flammable HFC, Ammonia, CO2 and hydrocarbons. New refrigerants are added frequently to the list of Danfoss-approved refrigerants and added to the product types.
- For an exhaustive and updated list, look up a code number in https://store.danfoss.com/en/.
New refrigerants
- Danfoss products are continually evaluated for use with new refrigerants, depending on market requirements.
- When a refrigerant is approved for use by Danfoss, it is added to the relevant portfolio, and the R number of the refrigerant (e.g. R513A) will be added to the technical data of the code number.
- Therefore, products for specific refrigerants are best checked at store.danfoss.com/en/, or by contacting your local Danfoss representative.
Tlhaloso ea lihlahisoa
Pressure and temperature data
Table 2: Pressure and temperature data
| Tlhaloso | Litekanyetso |
| P sehlopha | 35 limilimithara |
| Mocheso oa seaplane | -50 °C -65 °C |
| Max. khatello ea ho sebetsa | PS = 28 bar |
| Max. khatello ea teko | p’ = 36 bar |
| kv value for float orifice | SV 1 = 0.06 m3/h
SV 3 = 0.14 m3/h |
HLOKOMELA
- The highest kv value for the built-in throttle valve is 0.18 m3/h. The throttle valve can be used both in parallel and in series with the float orifice.
Tlhaloso ea lintho tse bonahalang
SV with low-pressure function
| C | Nnyo |
| D | Connection for balance pipe |
| P | Parallel connection of pos. C (screw 17 in pos. A) |
| S | Series connection of pos. C (screw 17 in pos. B) |
Table 3: SV with low-pressure function
| Che. | Karolo | Lintho tse bonahalang | DIN / EN |
| 1 | Matlo a phaphametseng | Ts'epe e sa beng le mabali
Mocheso o tlaase, tšepe |
X5CrNi18-10, DIN 17440
P285QH, EN 10222-4 G20Mn5QT |
| 2 | Phallana | Ts'epe e sa beng le mabali | |
| 3 | Aroha phini | Tšepe | |
| 4 | Letsoho le phaphametseng | Ts'epe e sa beng le mabali | |
| 5 | Sehokelo | Tšepe | |
| 6 | Pin | Ts'epe e sa beng le mabali | |
| 7 | Ntlo ea li-valve | Tšepe | |
| 8 | O-ring | Cloroprene (Neoprene) | |
| 9 | Molomo oa phaphamala | Plastiki | |
| 10 | Sehlopha sa taolo ea matsoho. Sephahla sa throttle | Tšepe | |
| 11 | Gasket | Ha se asbestos | |
| 12 | Plug | Tšepe | |
| 13 | O-ring | Cloroprene (Neoprene) | |
| 14 | Khokahano ea sefofane (karolo e setseng) | Tšepe | |
| 15 | Nale ea Orifice | Plastiki |
| Che. | Karolo | Lintho tse bonahalang | DIN / EN |
| 16 | O-ring | Cloroprene (Neoprene) | |
| 17 | Screw | Tšepe | |
| 18 | Gasket | Ha se asbestos | |
| 19 | Pin | Tšepe | |
| 20 | Sekoahelo | Mocheso o tlase, tšepe e entsoeng ka tšepe (e chitja) | EN-GJS-400-18-LT EN 1563 |
| 21 | Screw | Ts'epe e sa beng le mabali | A2-70 |
| 22 | Gasket | Ha se asbestos | |
| 23 | Label | Khateboto | |
| 25 | Screw | Tšepe | |
| 26 | Mohlatsoana oa selemo | Tšepe | |
| 28 | Letshoao | Aluminium |
SV with high-pressure function
| C | Nnyo |
| D | Connection for balance pipe |
| P | Parallel connection of pos. C (screw 17 in pos. A) |
| S | Series connection of pos. C (screw 17 in pos. B) |
Table 4: SV with high-pressure function
| Che. | Karolo | Lintho tse bonahalang | DIN / EN |
| 1 | Matlo a phaphametseng | Ts'epe e sa beng le mabali
Mocheso o tlaase, tšepe |
X5CrNi18-10, DIN 17440
P285QH, EN 10222-4 G20Mn5QT |
| 2 | Phallana | Ts'epe e sa beng le mabali | |
| 3 | Aroha phini | Tšepe | |
| 4 | Letsoho le phaphametseng | Ts'epe e sa beng le mabali | |
| 5 | Sehokelo | Tšepe | |
| 6 | Pin | Ts'epe e sa beng le mabali | |
| 7 | Ntlo ea li-valve | Tšepe | |
| 8 | O-ring | Cloroprene (Neoprene) | |
| 9 | Molomo oa phaphamala | Plastiki | |
| 10 | Sehlopha sa taolo ea matsoho. Sephahla sa throttle | Tšepe | |
| 11 | Gasket | Ha se asbestos | |
| 12 | Plug | Tšepe | |
| 13 | O-ring | Cloroprene (Neoprene) | |
| 14 | Khokahano ea sefofane (karolo e setseng) | Tšepe | |
| 15 | Nale ea Orifice | Plastiki | |
| 16 | O-ring | Cloroprene (Neoprene) | |
| 17 | Screw | Tšepe | |
| 18 | Gasket | Ha se asbestos | |
| 19 | Pin | Tšepe |
| Che. | Karolo | Lintho tse bonahalang | DIN / EN |
| 20 | Sekoahelo | Mocheso o tlase, tšepe e entsoeng ka tšepe (e chitja) | EN-GJS-400-18-LT EN 1563 |
| 21 | Screw | Ts'epe e sa beng le mabali | A2-70 |
| 22 | Gasket | Ha se asbestos | |
| 23 | Label | khateboto | |
| 25 | Screw | Tšepe | |
| 26 | Mohlatsoana oa selemo | Tšepe | |
| 28 | Letshoao | Aluminium |
Lihokelo
Table 5: Pilot connection (weld/solder)
Capacity tables
- The values in the capacity tables are based on a subcooling of 4 K just ahead of the SV valve.
- If the subcooling is more or less than 4 K, refer to the correction factors provided after the capacity tables.
- Table 6: R717 (ammonia)
| R717 (NH3) | |||||||||
| Mofuta | Mocheso o fetohang mouoane °C | Capacity in kW at pressure drop across valve ∆p bar | |||||||
| 0.8 | 1.2 | 1.6 | 2 | 4 | 8 | 12 | 16 | ||
| EA-1-SV | 10 | 9.5 | 11 | 13 | 15 | 20 | 27 | 30 | |
| 0 | 9.9 | 12 | 14 | 15 | 20 | 27 | 31 | 33 | |
| -10 | 10 | 12 | 14 | 15 | 21 | 27 | 31 | 33 | |
| -20 | 11 | 12 | 14 | 15 | 21 | 27 | 30 | 33 | |
| -30 | 11 | 12 | 14 | 15 | 20 | 26 | 30 | 33 | |
| -40 | 11 | 13 | 14 | 15 | 20 | 26 | 29 | 32 | |
| -50 | 11 | 12 | 13 | 15 | 20 | 26 | 29 | 32 | |
| EA-3-SV | 10 | 25 | 31 | 35 | 39 | 52 | 71 | 77 | |
| 0 | 26 | 32 | 36 | 40 | 52 | 69 | 78 | 83 | |
| -10 | 26 | 32 | 36 | 40 | 52 | 68 | 77 | 83 | |
| -20 | 26 | 31 | 35 | 39 | 52 | 67 | 76 | 82 | |
| -30 | 25 | 30 | 34 | 38 | 50 | 66 | 75 | 82 | |
| -40 | 24 | 29 | 33 | 36 | 49 | 65 | 73 | 80 | |
| -50 | 23 | 27 | 31 | 35 | 47 | 64 | 71 | 79 | |
Table 7: R22
| R22 | |||||||||
| Mofuta | Mocheso o fetohang mouoane °C | Capacity in kW at pressure drop across valve ∆p bar | |||||||
| 0.8 | 1.2 | 1.6 | 2 | 4 | 8 | 12 | 16 | ||
| EA-1-SV | 10 | 2.2 | 2.6 | 3 | 3.2 | 4.2 | 4.8 | 5.7 | 5.7 |
| 0 | 2.3 | 2.7 | 3.1 | 3.4 | 4.4 | 4.9 | 5.8 | 5.8 | |
| -10 | 2.4 | 2.8 | 3.2 | 3.5 | 4.5 | 5 | 5.8 | 5.9 | |
| -20 | 2.4 | 2.9 | 3.3 | 3.6 | 4.6 | 5 | 5.8 | 5.8 | |
| −30 | 2.5 | 2.9 | 3.3 | 3.6 | 4.5 | 5 | 5.7 | 5.7 | |
| -40 | 2.5 | 2.9 | 3.3 | 3.6 | 4.4 | 4.9 | 5.6 | 5.6 | |
| -50 | 2.6 | 2.9 | 3.3 | 3.5 | 4.3 | 4.8 | 5.4 | 5.4 | |
| R22 | |||||||||
| Mofuta | Mocheso o fetohang mouoane °C | Capacity in kW at pressure drop across valve ∆p bar | |||||||
| 0.8 | 1.2 | 1.6 | 2 | 4 | 8 | 12 | 16 | ||
| EA-3-SV | 10 | 5.6 | 6.8 | 7.7 | 8.5 | 11 | 13 | 15 | 15 |
| 0 | 5.8 | 7 | 8 | 8.8 | 11 | 13 | 15 | 15 | |
| -10 | 6 | 7.3 | 8.2 | 9 | 12 | 13 | 15 | 15 | |
| -20 | 6.1 | 7.3 | 8.3 | 8.9 | 11 | 13 | 14 | 15 | |
| -30 | 6.2 | 7.3 | 8.1 | 8.8 | 11 | 12 | 14 | 14 | |
| -40 | 6.1 | 7.1 | 7.9 | 8.5 | 11 | 12 | 14 | 14 | |
| -50 | 5.9 | 6.9 | 7.6 | 8.2 | 11 | 12 | 13 | 14 | |
Mabaka a ho lokisa
- When dimensioning, multiply the evaporator capacity by a correction factor k dependent on the subcooling Δtsub just ahead of the valve. The corrected capacity can then be found in the capacity table.
Table 8: R717 (ammonia)
| R717 (NH3) | |||||||||||
| ∆t K | 2 | 4 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 |
| k | 1.01 | 1 | 0.98 | 0.96 | 0.94 | 0.92 | 0.91 | 0.89 | 0.87 | 0.86 | 0.85 |
Table 9: R22
| R22 | |||||||||||
| ∆t K | 2 | 4 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 |
| k | 1.01 | 1 | 0.96 | 0.93 | 0.9 | 0.87 | 0.85 | 0.83 | 0.8 | 0.78 | 0.77 |
Litekanyo le boima
Table 10: SV 1 and SV 3 Dimensions and weights
| Mofuta | Boima ba 'mele |
| EA-1-SV | 7.5 lik'hilograma |
| EA-3-SV | 7.5 lik'hilograma |
Litekanyo tsa liphaephe
Mohala oa metsi
- The following suggested dimensions for the liquid line, which is connected to the nipple pos.
- Care based on a maximum velocity in a line with subcooled ammonia of approximately. 1 m/s and a maximum velocity in a line with subcooled fluorinated refrigerant of approx. 0.5 m/s.
Table 11: R717 (ammonia)
| Mofuta | Litekanyo | |
| 0.8 bar < ∆psv < 4 bar | 4 bar < ∆psv < 16 bar | |
| Tube ea tšepe | Tube ea tšepe | |
| EA-1-SV | 3⁄8 in. | 3⁄8 in. |
| EA-3-SV | 3⁄8 in. | 1⁄2 in. |
Table 12: R22, R134a, R404A
| Mofuta | Litekanyo | |||
| 0.8 bar < ∆psv < 4 bar | 4 bar < ∆psv < 16 bar | |||
| Tube ea tšepe | Tube ea koporo | Tube ea tšepe | Tube ea koporo | |
| EA-1-SV | 3⁄8 in. | 3⁄8 in. | 3⁄8 in. | 1⁄2 in. |
| EA-3-SV | 3⁄8 in. | 5⁄8 in. | 1⁄2 in. | 3⁄4 in. |
Table 13: Upper balance pipe (connect to pos. D on SV (L)
| Mofuta | Litekanyo |
| SV (L) 1 | 1 ho |
| SV (L) 3 | 11⁄2 in. |
Ho laela
Table 14: SV 1 – SV 3 Ordering
| Mofuta oa valve | Rated capacity in kW | Sebopeho sa ho paka | Qty./pack | Nomoro ea khoutu. | |||||
| R717 | R22 | R134a | R404A | R12 | R502 | ||||
| EA-1-SV | 25 | 4.7 | 3.9 | 3.7 | 3.1 | 3.4 | Pakete e le 'ngoe | 1 pc | 027B2021 |
| EA-3-SV | 64 | 13 | 10 | 9.7 | 7.9 | 8.8 | Pakete e le 'ngoe | 1 pc | 027B2023 |
HLOKOMELA
- The code nos. stated apply to float valves, types SV 1 and SV 3 incl. ∅ 6.5 / ∅ 10 mm weld connection (1) for the pilot line.
- Balance tube connection (liquid/vapor): 1 in. weld / 1 1⁄8 in. solder.
- The rated capacity refers to the valve capacity at evaporating temperature te = +5 °C, condensing temp. tc = +32 °C and liquid temperature tl = +28 °C.
Litifikeiti, liphatlalatso, le litumello
- The list contains all certificates, declarations, and approvals for this product type.
- Individual code number may have some or all of these approvals, and certain local approvals may not appear on the list.
- Some approvals may change over time.
- You can check the most current status at danfoss.com or contact your local Danfoss representative if you have any questions.
Table 15: Valid Approvals
| File lebitso | Mofuta oa tokomane | Document topic | Approval authority |
| Д-DK.БЛ08.В.00191_18 | EAC Declaration | Machinery & Equipment | EAC RU |
| 0045 202 1204 Z 00354 19 D 001(00) | Pressure – Safety Certificate | TÜV | |
| Д-DK.РА01.B.72054_20 | EAC Declaration | PED | EAC RU |
| EU 033F0685.AK | Phatlalatso ea EU | EMCD/PED | Lerato |
| 033F0691.AD | Phatlalatso ea Baetsi | RoHS | Lerato |
| 033F0473.AD | Phatlalatso ea Baetsi | ATEX | Lerato |
| Д-DK.БЛ08.В.01592 | EAC Declaration | EMC | EAC RU |
| Д-DK.МХ24.В.00273 | EAC Declaration | Machinery & Equipment | EAC RU |
| Д-DK.БЛ08.B.01120_19 | EAC Declaration | EMC | EAC RU |
| UL SA7200 | Mechanical – Safety Certificate | UL | |
| UA.1O146.D.00069-19 | UA Declaration | PED | LLC CDC EURO-TYSK |
| UA.TR-089.1112.01-19 | Pressure – Safety Certificate | PED | LLC CDC EURO-TYSK |
Table 16: Compliance table
| Mofuta | SV 1 and SV 3 |
| Classified for | Fluid group I |
| Sehlopha | I |
Table 17: Conformity Approvals
Pressure Equipment Directive (PED)
SV 1 and SV 3 are approved in accordance with the European standard specified in the Pressure Equipment Directive and are CE marked.- For further details/restrictions – see Installation guide.
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The Danfoss Product Store is your one-stop shop for everything product-related—no matter where you are in the world or what area of the cooling industry you work in. Get quick access to essential information like product specs, code numbers, technical documentation, certifications, accessories, and more.- Qala ho bala ka store.danfoss.com.
Fumana litokomane tsa tekheniki
Find the technical documentation you need to get your project up and running.- Get direct access to our official collection of data sheets, certificates and declarations, manuals and guides, 3D models and drawings, case stories, brochures, and much more.
- Qala ho batla hona joale ho www.danfoss.com/en/service-and-support/documentation.
Thuto ea Danfoss
Danfoss Learning is a free online learning platform.- It features courses and materials specifically designed to help engineers, installers, service technicians, and wholesalers better understand the products, applications, industry topics, and trends that will help you do your job better.
- Theha akhaonto ea hau ea Danfoss Learning mahala ho www.danfoss.com/en/service-and-support/learning.
Fumana lintlha tsa lehae le tšehetso
Sebaka sa Danfoss websites are the main sources for help and information about our company and products.- Find product availability, get the latest regional news, or connect with a nearby expert—all in your own language.
- Fumana Danfoss ea sebakeng sa heno websebaka mona: www.danfoss.com/en/choose-region.
Likarolo tsa tlatsetso
Get access to the Danfoss spare parts and service kit catalog right from your smartphone.- The app contains a wide range of components for air conditioning and refrigeration applications, such as valves, strainers, pressure switches, and sensors.
- Khoasolla sesebelisoa sa Spare Parts mahala ho www.danfoss.com/en/service-and-support/downloads.
Coolselector®2 - fumana likarolo tse ntlehali tsa sistimi ea hau ea HVAC/R
Coolselector®2 makes it easy for engineers, consultants, and designers to find and order the best components for refrigeration and air conditioning systems.- Run calculations based on your operating conditions and then choose the best setup for your system design.
- Khoasolla Coolselector®2 mahala ho coolselector.danfoss.com.
TS'ELISO
- Danfoss A / S
- Litharollo tsa Boemo ba Leholimo
- danfoss.com
- +45 7488 2222
Any information, including, but not limited to information on selection of product, its application or use, product design, weight, dimensions, capacity or any other technical data in product manuals, catalogues descriptions, advertisements, etc. and whether made available in writing, orally, electronically, online or via download, shall be considered informative, and is only binding if and to the extent, explicit reference is made in a quotation or order confirmation. Danfoss cannot accept any responsibility for possible errors in catalogs, brochures, videos, and other material.
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LBH
Q: What are the main applications of Float Valve Type SV 1 and SV 3?
A: These valves are primarily used in industrial refrigeration systems for liquid level regulation in both low and high-pressure applications.
Q: How do I determine the appropriate float valve type for my refrigeration system?
A: Select the float valve based on the specific application requirements, such as refrigerant type, media temperature range, and desired regulation capabilities.
Q: What precautions should I take when using Float Valve Type SV 1 and SV 3 in high-pressure applications?
A: Ensure proper sizing of the liquid line to prevent pressure drops that can reduce valve capacity and lead to inadvertent liquid accumulation in the condenser or receiver.
Litokomane / Lisebelisoa
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Danfoss SV 1, SV 3 Float Valve [pdf] Bukana ea Mosebelisi SV 1, SV 3, SV 1 SV 3 Float Valve, SV 1 SV 3, Float Valve, Valve |