Aluminium Profile Powder Coating Production Line Aluminium Profile Powder Coating Production Line,Aluminum Extrusion Powder Coating Line,Aluminum Profile Vertical Powder Coating Production Line,Power Coating For Aluminum Profile Foshan Meitu Machinery Equipment Co., Ltd , https://www.meitumachinery.com
Pressure Sealed Swing Check Valve
Swing Check Valve
**Product Specifications:**
- **Model No.:** API 6D
- **Flow Direction:** Bidirectional
- **Standard:** ANSI
- **Application:** Industrial, Water Treatment, Household Use
- **Trademark:** FYV
- **Transport Package:** Plastic + Wooden Case
- **Specification:** API / ISO / CE
- **Origin:** China
- **HS Code:** 8481804090
**Design Standards:**
- **Check Valve Design:** API 6D, BS 1868, ISO 14313
- **Face to Face:** ANSI B16.10
- **Flange Ends:** ANSI B16.5, ANSI B16.47
- **Inspection and Testing:** API 598, API 6D
- **Pressure and Temperature Rating:** ASME B16.34
- **Product Scope:** NPS 1½" to NPS 60", Class 150 to Class 2500
**Materials:**
- **Body Material:** WCB, LCB, WCC, CF8, CF8M
- **Seat Material:** PTFE, RPTFE, NYLON, DEVLON, PEEK
- **Stem and Ball Material:** Carbon Steel, Forged Steel, Stainless Steel (CF8, CF8M, CF3, CF3M)
**Key Features:**
- **Body and Bonnet Connection:** Studs and nuts for Classes 150–900; Pressurized seal design for Classes 1500–2500
- **Body-to-Bonnet Joint:**
- Stainless steel + flexible graphite gasket for Classes 150 and 300
- Optional gasket for Class 600
- Ring joint gasket for Class 900
- Pressurized seal design for Classes 1500–2500
- **Seat Design:**
- For carbon steel valves: Forged steel with hard alloy weld on customer request
- For stainless steel valves: Integral seat or direct hard alloy welding
- Threaded or welded seats available upon request
**Fire Safe Design:**
Our swing check valves are designed with fire-safe features to prevent internal and external leakage in case of fire. This includes metal-to-metal seals and graphite gaskets that maintain integrity under high temperatures. The design meets international standards such as API 607, API 6FA, BS 6755, and JB/T 6899.
**Self-Relief Mechanism:**
In the event of temperature rise causing liquid medium expansion inside the valve body, a built-in relief valve automatically releases pressure, ensuring safe operation.
**Urgent Grease Injection System:**
For larger valves (DN > 150mm), we provide an emergency grease injection device to prevent leakage between the stem and body if the O-ring is damaged.
**Double-Block and Bleed Function:**
This feature allows the valve to block both inlet and outlet simultaneously, even when under pressure, and bleed off any trapped media from the body cavity.
**Advantages of Choosing FYV:**
1. **Factory Direct:** We have 3 production bases and 1 foundry located in Wenzhou, Shanghai, and Lishui, covering over 110,000 square meters. With more than 600 employees, including 60+ technical engineers, we produce high-quality valves with over $80 million in annual sales.
2. **Global Sales Support:** Our sales team is multilingual and experienced in various regions, including Russian, German, Spanish, and Japanese markets.
3. **Low MOQ:** We can accommodate small orders and provide samples quickly due to our in-house casting facility.
4. **OEM Accepted:** Custom designs and specifications are available based on client requirements.
5. **Comprehensive Service:** Our trade manager is always online to respond to inquiries promptly.
6. **Quality Assurance:** We have strict quality control systems and advanced testing equipment to ensure all valves meet industry standards.
7. **Quick Delivery:** We maintain large stock for popular products to ensure fast delivery.
8. **Competitive Pricing:** As a full-service manufacturer, we offer cost-effective solutions without compromising on quality.
**Material List for Key Components:**
| No. | Part Name | Carbon Steel | Low Temp. Steel | Stainless Steel |
|-----|-------------------|--------------------------|---------------------------|------------------------------|
| 1 | Body | ASTM A216-WCB | ASTM A352-LCB/LCC | ASTM A351-CF8/CF8M |
| 2 | Fire Safe Packing | Graphite | Graphite | Graphite |
| 3 | O-ring | NBR/Viton | Viton | Viton |
| 4 | Spring Seat | ASTM A105 + ENP | ASTM A350-LF2 + ENP | ASTM A182-F304/F316 |
| 5 | Spring | 17-7PH/Inconel | 17-7PH/Inconel | 17-7PH/Inconel |
| 6 | Gasket | ASTM A105 + ENP | ASTM A350-LF2 + ENP | ASTM A182-F304/F316 |
| 7 | Adjusting Ring | ASTM A105 + ENP | ASTM A350-LF2 + ENP | ASTM A182-F304/F316 |
| 8 | Seat Ring | ASTM A105 + ENP | ASTM A350-LF2 + ENP | ASTM A182-F304/F316 |
| 9 | Seat | PTFE/RPTFE/NYLON | PTFE/RPTFE/NYLON | PTFE/RPTFE/NYLON |
| 10 | Trunnion | ASTM A105 + ENP | ASTM A182-F304 | ASTM A182-F304/F316 |
| 11 | Screw | ASTM A193-B7/B7M | ASTM A320 L7 | ASTM A193-B8/B8M |
| 12 | Drain Plug | ANSI 1045 | ASTM A182-F304 | ASTM A182-F304/F316 |
| 13 | Sliding Bearing | 304 + PTFE | 304 + PTFE | 304 + PTFE / 316 + PTFE |
| 14 | Ball | ASTM A105 + ENP | ASTM A350-LF2 + ENP | ASTM A182-F304/F316 |
| 15 | Sealant Injection | ANSI 1045 | ASTM A182-F304 | ASTM A182-F304/F316 |
| 16 | Sliding Bearing | 304 + PTFE | 304 + PTFE | 304 + PTFE / 316 + PTFE |
| 17 | Stem | ASTM A182-F6a | ASTM A182-F304 | ASTM A182-F304/F316 |
| 18 | Packing | Graphite | Graphite | Graphite |
| 19 | Gasket | 304 + Graphite | 304 + Graphite | 304 + Graphite / 316 + Graphite |
| 20 | Gasket | 304 + Graphite | 304 + Graphite | 304 + Graphite / 316 + Graphite |
| 21 | Bonnet | ASTM A216-WCB | ASTM A352-LCB/LCC | ASTM A351-CF8/CF8M |
| 22 | Bolt | ASTM A193-B7/B7M | ASTM A320 L7 | ASTM A193-B8/B8M |
| 23 | Nut | ASTM A194-2H/2HM | ASTM A194 4 | ASTM A194-8/8M |
| 24 | Packing Case | ANSI 1025 | ASTM A182-F304 | ASTM A182-F304/F316 |
| 25 | Screw | ASTM A193-B7/B7M | ASTM A320 L7 | ASTM A193-B8/B8M |
| 26 | Fire Safe Packing | Graphite | Graphite | Graphite |
| 27 | Pin | ANSI 1045 | ANSI 1045 | 304 / 316 |
| 28 | Gland | ASTM A105 | ASTM A350-LF2/LF3 | ASTM A182-F304/F316 |
| 29 | Release Valve | ANSI 1045 | ASTM A182-F304 | ASTM A182-F304/F316 |
**Pressure Sealed Swing Check Valve**
