المقاولين,قاطع الدائرة,العاكس للطاقة الشمسية,عداد كهرباء,البطاريات الشمسية
Danfoss SV4 series direct-acting low-side liquid level regulating valve, موديل 027B2024, مصمم للتحكم الدقيق في مستوى السائل في أنظمة التبريد وتكييف الهواء. كيلو فولت = 0.23 م³/ساعة, أقصى ضغط العمل 28 حاجِز, maximum differential pressure Δp = 23 حاجِز. Compatible with ammonia (R717) and fluorocarbon refrigerants, with multiple installation and injection options.
1 شرح كود النموذج
| مقطع الكود | معنى |
| SV4 | سلسلة المنتجات: direct‑acting low‑side liquid level regulating valve, يكتب 4 (orifice diameter 3.0 مم) |
| 027B2024 | Danfoss official order number: complete float valve (with float chamber) |
| ملحوظة | Version without float chamber: 027B2014; matching flange: 027B2027 |
2 المواصفات الفنية
| المعلمة | قيمة | ملاحظات |
| Kv value | 0.23 م³/ساعة | Orifice diameter 3.0 مم |
| Cv value | 0.27 gal/min | - |
| Maximum working pressure (MWP) | 28 حاجِز (406 psig) | - |
| Maximum allowable differential pressure (Δp) | 23 حاجِز (334 رطل لكل بوصة مربعة) | Specific to SV4 series |
| Test pressure (MTP) | 42 حاجِز | - |
| Temperature range | –50°C ~ 120°C | Media temperature |
| Inlet connection size | 21.8 مم | Solder connection |
| Equalizer connection | 1 بوصة | Solder connection |
| Suitable refrigerants | R134a, R22, R404A/R507A, R717 (ammonia), إلخ. | Compatible with most non‑flammable refrigerants |
| مواد | Valve body: low‑temperature cast steel | Complies with EN‑GJS‑400‑18‑LT |
| Float chamber: ST 35.8 فُولاَذ | ||
| Seals: non‑asbestos materials | ||
| وزن | Gross 25.91 كجم | - |
| Net 24.5 كجم | ||
| Approvals | م, مجموعة شرق أفريقيا, أول, UKCA | PED Category II |
3 القدرة المقدرة
| Refrigerant | Capacity (تر) | Capacity (كيلوواط) | Test conditions |
| R717 (ammonia) | 29 تر | 102 كيلوواط | Evaporation temp. +5درجة مئوية, condensing temp. +32درجة مئوية, subcooling 4 ك |
| R22 | 5.97 تر | 21 كيلوواط | - |
| R134a | 4.66 تر | 16.4 كيلوواط | - |
| R404A/R507A | 4.38 تر | 15.4 كيلوواط | - |
4 الميزات الرئيسية
- عملية موثوقة: Stable mechanical structure, adapts to varying operating conditions
- Precise regulation: Maintains stable liquid level under changing loads
- Easy maintenance: Orifice insert and filter can be replaced without emptying the float chamber
- تركيب مرن: Available with or without float chamber
- Multiple injection methods: Direct injection into float chamber, evaporator or equalizer vessel
- High-quality materials: Low-temperature cast steel body, ST 35.8 float chamber, non-asbestos gaskets
5 Application Methods
| Injection method | طلب | Installation requirement |
| Direct injection into float chamber | Small and medium‑sized systems | Remove 4 M6 screws (pos. 23), plug pos. 24 |
| Direct injection into evaporator | Large evaporators / long pipelines | Remove pos. 24, install solder connection, keep pos. 23 |
| Direct injection into equalizer vessel | Special system designs | Remove 4 M6 screws (pos. 23), plug pos. 24 |
| Capacity adjustment | When capacity is excessive | Remove only 2–3 M6 screws to limit injection flow |
6 Operating Conditions & القيود
Applicable systems: Low-side liquid level regulation in refrigeration, freezing and air-conditioning systems
Suitable refrigerants: Ammonia (R717) and common fluorocarbons (R22, R134a, R404A, إلخ.)
Not recommended: Use with flammable hydrocarbons (contact Danfoss if required)
PED classification: Category II, compliant with European Pressure Equipment Directive
7 تثبيت & صيانة
- Float setting
Rotate main spindle counterclockwise until valve closes (audible click)
Rotate clockwise until valve opens (audible and tactile feedback)
Rotate an additional ½ turn to complete setting and mark position
- Filter cleaning: Inspect and clean filter regularly to ensure stable flow
- Seal kit: Spare part number 027B2070, includes all required seals
- Special orifices: For reduced capacity, replace orifice (1.0–2.8 mm available), spare part numbers 027B2080–027B2083
8 طلب المعلومات
| وصف | رقم الطلب. | EAN |
| SV4 Float Valve (with float chamber) | 027B2024 | 5702422148319 |
| SV4 Float Valve (without float chamber) | 027B2014 | - |
| Mounting flange (for version without float chamber) | 027B2027 | - |
| Seal kit | 027B2070 | - |
9 نماذج بديلة & مقارنة السلسلة
| نموذج | Orifice diameter | Kv value | الأعلى | القدرة المقدرة (R717) | رقم الطلب. |
| SV4 | 3.0 مم | 0.23 | 23 حاجِز | 102 كيلوواط | 027B2024 |
| SV5 | 3.5 مم | 0.31 | 21 حاجِز | 138 كيلوواط | 027B2025 |
| SV6 | 4.0 مم | 0.43 | 19 حاجِز | 186 كيلوواط | 027B2026 |
10 Key Documents
- Technical manual: Modulating liquid level regulators, direct operated, for low pressure side, types SV 4, 5 و 6 (Doc. لا. 103040)
- Installation guide: Danfoss SV 4 Float Valve Installation Guide
- Spare parts catalogue: RK0XG
