تله بخار ترمودینامیکی تیپ TD62 عیوض

Thermodynamic Steam Trap Type TD62 – With Bimetallic Air Vent

Main Keywords: Thermodynamic Steam Trap TD62, Steam Trap with Bimetal Vent, Azarsam Steam Trap, Flanged Steam Trap

---

General Description:

The TD62 Thermodynamic Steam Trap from Azarsam is designed for high-pressure steam lines. It features a bimetallic air vent ring that effectively purges excess air from the system. Its compact design allows for high discharge capacity, easy maintenance without pipeline disconnection, and flexible installation (both vertical and horizontal).

---

Technical Features:

• Connection Types: Flanged, Threaded, Socket Welded

• Sizes: ½", ¾", 1" (DN15–DN25)

• Working Pressure: 0.3 – 65 bar

• Working Temperature: up to 425°C

• Max Allowable Pressure: 116 bar @ 40°C

• Max Allowable Temperature: 550°C @ 60 bar

• Back Pressure: Up to 80% of inlet pressure

• Installation Direction: According to arrow mark (vertical/horizontal)

---

Material Specification (ASTM/AISI):

• Body: A105 / A182 F321

• Disc: AISI 440C

• Disc Holder Ring: AISI 630 / 420

• Strainer: AISI 316L

• Cover & Nameplate: AISI 304

• Screen Holder: A351 Gr.CF8

• Air Vent Ring: Bimetallic

---

Dimensions (Flanged Type – Class 150-900):

Size	Weight (kg)	A	B	G	H	L (150-900)
½”	5.7	58	62	30	30	150-160
¾”	7.1	58	62	30	30	165-190
1”	10	63	63	34.5	14	180-200

 

حتماً مسعود جان، در ادامه نسخه‌ی کامل انگلیسی درباره آلیاژ Stainless Steel 420 و مزایای آن نسبت به cast iron در کاربرد steam trap‌ (تله بخار) تقدیم می‌کنم:

---

🔹 Full Technical Overview of Stainless Steel 420 for Steam Trap Components

🔸 General Characteristics of Stainless Steel 420:

Stainless Steel 420 is a martensitic stainless steel known for its high hardness, good wear resistance, and moderate corrosion resistance. It is widely used in components subjected to dynamic loads, steam pressure, and friction, such as internal parts of steam traps.

---

🔸 Typical Chemical Composition (AISI 420):

Element	Content (%)
Chromium (Cr)	12.0 – 14.0
Carbon (C)	0.15 – 0.40
Manganese (Mn)	≤ 1.00
Silicon (Si)	≤ 1.00
Phosphorus (P)	≤ 0.04
Sulfur (S)	≤ 0.03
Iron (Fe)	Balance

---

🔸 Mechanical Properties:

Property	Typical Value
Hardness (HRC)	Up to 52 (when hardened)
Tensile Strength	700 – 1000 MPa
Wear Resistance	Excellent
Corrosion Resistance	Moderate

---

✅ Why Stainless Steel 420 is Used in Steam Traps

🔹 1. High Wear Resistance

• Moving parts in steam traps, such as valve discs and float mechanisms, are exposed to constant flow and pressure. SS 420’s high hardness provides superior resistance to wear and erosion.

🔹 2. Heat Treatment Capability

• SS 420 can be heat treated to achieve high mechanical strength and durability, making it suitable for harsh thermal cycling.

🔹 3. Moderate Corrosion Resistance

• With ~13% chromium, it provides decent corrosion resistance in moist steam and condensate environments, outperforming plain carbon steels and cast iron.

🔹 4. Good Machinability

• SS 420 is easily machinable in the annealed state and can be hardened after precise machining.

---

🔸 Applications Beyond Steam Traps:

• Valve internals and pump shafts

• Knife blades and cutting tools

• Springs and washers

• Motor components and seat rings

---

🔹 Comparative Analysis: Stainless Steel 420 vs. Cast Iron in Steam Systems

Feature / Material	Stainless Steel 420	Cast Iron
Pressure Resistance	High (up to 100 bar internal parts)	Limited (usually ≤ 16 bar body rating)
Temperature Resistance	Up to ~600°C	Typically up to 250–300°C
Wear Resistance	Very High	Low
Corrosion Resistance	Moderate	Poor (especially in moist steam)
Shock Resistance	Excellent	Brittle under impact
Machinability	Good	Fair
Dimensional Accuracy	High (via machining)	Lower (casting limitations)
Weight	Lightweight (optimized)	Heavier

---

🔸 Pressure-Temperature Working Table (Approximate)

Material / Temperature (°C)	Pressure @ 20°C	Pressure @ 200°C	Pressure @ 400°C
SS 420 (internal parts)	Up to 100 bar	~80 bar	~50 bar
Cast Iron (gray iron)	Max 16 bar	~12 bar	~5 bar

Note: Cast iron becomes brittle and unsafe above 300°C in steam service.

---

✅ Summary of Advantages of SS420 Over Cast Iron in Steam Traps

• Superior hardness and durability

• Withstands high pressure and temperature

• Better corrosion resistance in moist environments

• Longer service life with reduced maintenance

• Safe under thermal and mechanical shock

• Lightweight and precise component design

---

📌 Conclusion:
Using Stainless Steel 420 in steam trap internals provides a safer, more durable, and cost-effective solution compared to cast iron—especially in high-performance or critical steam applications.

---

اگر بخوای این متن رو برای کاتالوگ یا صفحه‌ی محصول انگلیسی در سایت فروشگاه «بنیاد استیل» آماده کنیم، می‌تونم نسخه‌ی سئو شده با عنوان، متا دیسکریپشن و هدینگ‌های بهینه‌شده هم برات تنظیم کنم.

آیا نیاز داری نسخه مخصوص وب یا کاتالوگ PDF هم برات طراحی کنم؟

---

Frequently Asked Questions (FAQ):

1. Is TD62 suitable for high-pressure steam lines?
Yes, it supports up to 65 bar operating pressure.

2. Can it be installed vertically?
Yes, it supports both vertical and horizontal installations.

3. Is it resistant to freezing and water hammer?
Yes, its materials and design provide good resistance.

---

📍 Find us on Google Maps:
Click Here

📞 Contact Bonyad Steel:
021-33939659
021-33922432

📲 WhatsApp us for real-time pricing.

📦 Listed on Torob marketplace
📷 Instagram: @boniad_steel

---