Special Purpose Double Forging Butt Welding Machine High Efficiency Butt Welding Machine,Cheap Butt Welding Machine,Butt Welding Machinery,Double Forging Butt Welde Jiangyin Keyu Electric Co., Ltd , https://www.wirebuttweldingmachines.com
High Pressure Power Station Check Valve
**Product Specifications**
- **Model No.:** API 6D
- **Flow Direction:** Unidirectional
- **Standard:** ANSI
- **Application:** Industrial, Water, and Household Use
- **Size:** 2" to 64"
- **Class:** 150lbs to 2500lbs
- **Trademark:** FYV
- **Transport Package:** Plastic + Wooden Case
- **Specification:** API/ISO/CE
- **Origin:** China
- **HS Code:** 8481804090
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### Key Features
1. **High Pressure Check Valve**
2. **API 600, E101 Design**
3. **Pressure Seal Design**
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### Standards Compliance
1. **Design & Manufacturing:** API 600, ANSI B16.34, E101
2. **Face-to-Face/End-to-End:** ANSI B16.10, E101
3. **Butt-Welding Design:** ANSI B16.25
4. **Pressure-Temperature Rating:** ASME B16.34, E101
5. **Inspection & Testing:** API 598, E101
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### Material Details
1. **Body:** WCB, WC1, WC6, WC9
2. **Seat:** 15CrMoA, 12Cr1MoVA
3. **Disc:** WCB, WCI, WC6, WC9
4. **Stem:** WCB, WCI, WC6, WC9
5. **Sealing Ring:** Soft Steel or Reinforced Graphite
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### Description
- The valve’s middle cavity is designed with a pressure-sealing structure, ensuring excellent sealing performance under high-pressure conditions.
- The two ends of the branch pipe are connected via welding, making it suitable for various connection requirements.
- The pressure-resistant parts are made from high-quality alloy steel, offering superior high-temperature resistance, high load capacity, and reliable operation.
- The sealing face of the valve flap and seat is welded with STL cobalt-based hard alloy, providing high hardness, wear resistance, heat resistance, corrosion resistance, and long service life.
- The valve flap rotates around the pipe base, reducing impact during closure.
- A pin structure is installed internally, minimizing leakage risks.
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### Design Standards
- **Design Standard:** API 6D
- **Length of Structure:** API 6D / ASME B16.10
- **Flange Connecting End:** ASME B16.5 / ASME B16.47
- **Butt Welding Connecting End:** ASME B16.25 / ASME B31.8
- **Fireproof Test:** API 607 / API 6FA
- **Inspection & Test:** API 6D
- **Pressure & Temperature Rating:** ASME B16.34
- **Product Scope:** NPS 1½" ~ NPS 60", CL150 ~ CL2500
- **Main Body Material:** WCB, LCB, WCC, CF8, CF8M, etc.
- **Valve Seat Material:** PTFE, RPTFE, NYLON, DEVLON, PEEK, etc.
- **Drive Device:** Handle, Worm Wheel, Electric, Pneumatic, etc.
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### Main Features
- **Urgent Grease Injection Device:**
For trunnion ball valves with DN > 150mm (NPS), an urgent grease injection device is installed on both the stem and seat. For valves with DN < 125mm, it is placed in the body cavity. This helps prevent leakage in case of damage to the O-ring or body seat ring.
- **Double-Block and Bleed Functions:**
The front ball sealing design allows each seat to independently cut off the medium at both inlet and outlet, enabling double-block functionality. When the valve is closed, the body cavity can be isolated from both ends even under pressure, allowing the trapped medium to be bled out through the relief valve.
- **Fire Safe Design:**
In fire applications, non-metallic parts like the PTFE seat ring, stem O-ring, and body-bonnet gasket may be damaged due to high temperatures. Our special design includes metal-to-metal or graphite seals to prevent internal and external leakage. It meets standards such as API 607, API 6FA, BS 6755, and JB/T 6899.
- **Self-Relief in the Body Cavity:**
When liquid media in the body cavity vaporizes due to rising temperature, the pressure increases significantly. The seat self-relieves the pressure, ensuring the safety of the valve.
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### Why Choose FYV?
1. **Factory Direct:**
FYV has three production bases and one foundry located in Wenzhou, Shanghai, and Lishui, China. The factory spans over 110,000 square meters with more than 600 staff members, including 60+ technical engineers. Annual sales exceed $80 million USD.
2. **Global Sales Team:**
We offer specialized sales services tailored to different regions worldwide. Our team is fluent in local languages and experienced in their respective markets, including Russian, German, Spanish, and Japanese.
3. **Low MOQ:**
With our own casting company, we are ready to provide samples and small orders to meet your business needs.
4. **OEM Accepted:**
We can customize products according to client specifications or industry standards.
5. **Complete Service:**
Our trade manager is always online to respond quickly to your inquiries and provide support throughout the process.
6. **Quality Assurance:**
We have a strict quality control system and advanced testing equipment to ensure all valves meet size, pressure, and environmental requirements. We continuously build a strong market reputation.
7. **Quick Delivery:**
We maintain large stock for popular products, ensuring fast delivery times.
8. **Competitive Pricing:**
As a manufacturer with our own workshop and casting company, we offer cost-effective solutions without compromising quality.
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### Parts and Materials Table
| 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 |
---
### Accessories Table
| No. | Accessory Name | Material |
|-----|----------------|--------------------------------------|
| 1 | Body | WCB/WC1/WC6/WC9 |
| 2 | Sealing Ring | Graphite |
| 3 | Bonnet | WCB/WC1/WC6/WC9 |
| 4 | Disc | A105/25/12CrMoVA |
| 5 | Nut | 35CrMoa/25Cr2MoV |
| 6 | Rocker | WCB/WC1/WC6/WC9 |
| 7 | Sell the post | A105/25/15CrMoa/12CrMoVA |
| 8 | Stud | 35CrMoa/25Cr2MoV |
| 9 | Seat | A105/25/15CrMoa/12CrMoVA |
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*High Pressure Power Station Check Valve*
