صمامات الفراشة
ويفر · لوج · إزاحة مزدوجة · إزاحة ثلاثية · هوائي
Reguvale's butterfly valve family offers one of the most versatile and economical valve solutions available today. From compact wafer-type valves for light-duty water and HVAC systems to high-performance triple-offset designs for severe-service steam and chemical applications, our butterfly valves combine quarter-turn speed, lightweight construction, and excellent flow characteristics at a fraction of the cost and weight of equivalent gate, globe, or ball valves.
The core of every Reguvale butterfly valve is its disc-and-seat sealing system. We offer six seat materials to match your fluid and temperature: EPDM for cold water and HVAC (−10°C to +120°C), NBR for oil and fuel services, Viton/FKM for aggressive chemicals and higher temperatures (+200°C), PTFE for corrosive acid/base environments, and metal seats (SS316/Inconel/Stellite) for high-pressure steam and high-temperature process lines up to +550°C. Body materials include ductile iron (epoxy-coated), aluminum bronze, stainless steel (CF8M/Duplex), and carbon steel.
All lug-type and flanged butterfly valves are drillable to ISO 5212 for direct actuator mounting. Our pneumatic actuated packages include spring-return (fail-safe) or double-acting cylinders with limit switches and positioners, pre-assembled and function-tested before shipping. Lead times: standard valves 5–7 days; actuated assemblies 10–14 days.
الميزات الرئيسية
مضغوط وخفيف
A butterfly valve typically weighs 1/6th to 1/10th of an equivalent gate valve and requires far less installation space. This means lighter pipe supports, smaller valve chambers, and easier handling in the field.
سرعة ربع دورة
90° rotation from fully closed to fully open in under 2 seconds (manual lever) or 1 second (actuated). Ideal for rapid-isolation applications like emergency shutdown (ESD) systems.
أداء إغلاق محكم
Concentric rubber-seated valves achieve Class VI (bubble-tight) shutoff. Double-offset (high-performance) designs reduce friction and wear. Triple-offset metal-seated valves reach Class V or better for steam/gas.
نطاق واسع للأحجام والضغوط
DN50 to DN2000 (2" –80") in standard production; PN10/16 for concentric, PN16/25/40/Class 150/300 for offset types. Special sizes beyond DN2000 available on request.
مرونة التشغيل
Manual lever, gear operator, spring-return pneumatic (fail-open/fail-close), double-acting pneumatic, electric (ON/OFF or modulating 4-20mA), and hydraulic actuator options.
تكلفة دورة حياة منخفضة
Fewer moving parts than gate/globe valves, replaceable seat rings without removing the valve from the line (lug/flanged type), and no regular lubrication requirement –total cost of ownership is among the lowest.
المواصفات الفنية
| المعلمة | المواصفة |
|---|---|
| Body Material | Ductile Iron (GJS400-18/GGG50) مطلية بالإيبوكسي / CF8M SS316 / برونز ألومنيوم / WCB |
| Disc Material | SS304 / SS316 / Ductile Iron Nickel-Al-Bronze Plated / برونز ألومنيوم |
| Seat Material | EPDM / NBR / Viton(FKM) / PTFE / Metal Seat (SS316/Inconel 625/Stellite) |
| Design Type | متركز (بطانة مطاطية) / إزاحة مزدوجة / إزاحة ثلاثية |
| Size Range | DN50 –DN2000 (2" –80"); larger on request |
| Pressure Rating | PN10 / PN16 / PN25 / PN40 / Class 150 / Class 300 |
| Installation | ويفر (بين الفلنجات) / لوج (إدراجات ملولبة) / فلنجة مزدوجة |
| Operation | مقبض رافعة / صندوق تروس دودي (نسبة 10:1 إلى 200:1) / هوائي / كهربائي |
| Temperature | EPDM: −20→+120°C | NBR: −20→+82°C | Viton: −15→+200°C | PTFE: −200→+200°C | Metal: →?550°C |
| Leakage Class | Concentric: Class VI (Zero) | Double/Triple: Class V / IV |
| Standards | ISO 5752 / MSS SP-67 / BS 5155 / JIS B2032 / AWWA C504 |
| Certification | ISO 9001:2015, SGS اختبار المواد (MTC متاح لكل دفعة) |
الأسئلة الشائعة
أسئلة شائعة حول صمامات الفراشة أجاب عنها فريق الهندسة لدينا.
نوع ويفر مقابل لوج مقابل مفلنج –أي واحد تختار؟
ويفر: محشور بين فلنجتي أنبوب باستخدام براغي مارة. الأرخص والأخف، لكن يجب تثبيت أحد الجانبين بالبراغي للصيانة. الأفضل لغير الحرج، دون حاجة لطرف مغلق.
لوج: يحتوي على إدراجات ملولبة (lugs) ببراغي مستقلة. يمكن فصل أحد الجانبين بينما يبقى الصمام مغلقاً مقابل الفلنجة الأخرى –مثالي لخدمة الطرف المغلق والخزانات وعزل المعدات.
مفلنج (فلنجة مزدوجة): يحتوي على فلنجات متكاملة خاصة تطابق فلنجات الأنبوب. الأقوى، يدعم أحمال الأنابيب، الأفضل للأحجام الكبيرة (DN300+) والخدمة المدفونة والتطبيقات عالية الاهتزاز.
What seat material should I select for my application?
EPDM: Best all-round for water, air, and weak chemicals up to +120°C. Most common choice.
NBR (Buna-N): Good for oils, fuels, petroleum products, aliphatic hydrocarbons. Avoid with aromatic solvents and strong oxidizers.
Viton/FKM: Excellent for acids, aromatics, and high temperatures up to +200°C. Costlier but essential for chemical processing.
PTFE: Near-universal chemical resistance. Used for corrosive acids/bases. Lower temperature limit than rubber (cold-flow concern below 0°C).
Metal seat (SS316/Inconel/Stellite): Required for steam above +180°C, high-pressure gas, and services with abrasive particles that would embed in rubber seats.
Can butterfly valves be used for throttling / flow regulation?
Yes –within limits. Concentric rubber-lined valves modulate reasonably well in the 20°–70° open range and are commonly used for balancing in HVAC systems. However, for precise control or high ΔP service, double-offset or triple-offset valves with characterized discs give much better linearity, less torque variation, and longer seat life under cycling conditions.
What is double-offset vs triple-offset butterfly valve?
Double-offset (High-Performance): The shaft is offset behind the disc centerline and also offset from the body centerline. This causes the disc to swing away from the seat immediately upon opening, reducing friction and wear. Good for higher pressure/temperature than concentric, up to ~+230°C.
Triple-offset: Adds a geometric conical seat shape as a third offset. The metal-seated disc contacts the seat only at the fully closed position with zero rubbing during opening/closing cycle. Enables metal-to-metal Class V shutoff in steam and high-temp gas service up to +550°C, replacing gate and globe valves at a fraction of the weight and cost.
How do I size a pneumatic actuator for my butterfly valve?
The actuator torque must exceed the valve's breakaway (opening) torque plus a safety factor of 1.3–1.5×. Key factors: valve size (larger = more torque), pressure differential (higher ΔP = more torque), seat material (rubber has more friction than metal), and whether it's spring-return (spring force adds to required torque). Send us your valve model, size, pressure rating, and fail-position preference –we'll specify the correct actuator package pre-mounted and tested.
What maintenance do butterfly valves require?
Rubber-lined concentric valves are nearly maintenance-free for 10–15 years in clean water service. Periodic checks: inspect seat for wear/cracks, check disc/stem for corrosion, verify actuator torque. Lug and flanged types allow in-line seat replacement. For offset valves: check seals, re-torque body bolts if needed, and lubricate the gearbox (if equipped) annually. In dirty/slurry service, plan more frequent inspections.
التطبيقات وحالات الاستخدام
محطات معالجة المياه
سحب المياه الخام، دخول/خروج المروق، غسل المرشح، خطوط التعقيم
التكييف والمياه المبردة
عزل المبرد/برج التبريد، تحكم ملف AHU، تخزين الطاقة الحرارية
الصناعات الكيميائية
خطوط كاوية/مذيب/حمض، تغذية مفاعل دفعات، مزرعة خزانات
توليد الطاقة
دوران مياه التبريد، مساعد مياه تغذية الغلاية، معالجة لبود FGD
البحري والبحري البعيد
تبريد مياه البحر، معالجة مياه الصابورة، أنظمة القاع/الحريق
منتجات ذات صلة
صمامات فراشة ويفر
ويفر / لوج / إزاحة مزدوجة
صمامات فراشة هوائية
ارتداد بالنابض / مزدوج التأثير
صمامات التحكم
غشاء / كهربائي / موجه بالقفصجميع الصمامات
الكتالوج الكامل وقريباًمقالات ذات صلة
أدلة مفيدة لتحديد وصيانة صمامات الفراشة.