**Product Specifications**
- **Model No.:** deca-b
- **Work Pressure:** High Pressure (10.0 MPa < Pn < 80.0 MPa)
- **Working Temperature:** Normal Temperature (-40°C < T < 120°C)
- **Material of Seal Surface:** Metal Hard Sealed
- **Valve Body:** Forge Welding
- **Application:** Industrial Usage, Water Industrial Usage
- **Trademark:** DECRRD
- **Transport Package:** Wooden Case
- **Specification:** Customed
- **Origin:** Wenzhou
**Key Features:**
1. **Compact Structure:** Low volume, light weight, and easy maintenance.
2. **Smooth Flow Channel:** Low flow resistance, low pressure drop, and high flow capacity.
3. **Three-Eccentric Multi-Level Compound Seal Butterfly Valve:** Utilizes a unique cam effect to disengage the seat from the disc seal ring without friction during the 90° travel.
4. **Three-Eccentric Soft Seal Butterfly Valve:** Made with integral PTFE materials, suitable for applications requiring high cleanliness, frequent operation, and strong corrosion resistance. Ensures service life similar to that of the pipe in thermal systems.
5. **Three-Eccentric Metal Seal Butterfly Valve:** Full metal seal structure ("hard-contact-hard"), ideal for extreme temperatures, severe erosion, and crystallization conditions.
6. **Strong Anti-Wear Performance:** The disc features a three-eccentric design with hard alloy overlay welding for excellent wear resistance.
7. **Valve Flow Characteristics:** Approximate equal percentage, enabling both control and shut-off functions.
**Main Technical Parameters:**
- **Type:** Straight-through flat offset casting body
- **Nominal Diameter:** DN50 ~ 1600 (NPS2 ~ 64)
- **Nominal Pressure:** PN 16 ~ 40 (Class 150 ~ 600)
- **Connection Type:** Flange type, wafer type
- **Body Material:** A216-WCB, A351-CF8, A351-CF8M, A351-CF3, A351-CF3M, A217-WC6, A217-WC9
- **Bonnet:** Standard: -29 ~ 250°C; High temperature (cooling fin): 250 ~ 600°C; Low temperature (extension): -46 ~ -29°C
- **Packing:** PTFE, flexible graphite, nickel-based wire reinforced graphite
- **Disc Type:** Three-eccentric rotary type
- **Seat Type:** Multi-level compound seal, soft seal, metal hard seal
- **Flow Characteristics:** Approximate equal percentage
- **Adjustable Ratio:** 30:1
- **Rated Cv Value:** See Table 3 for details
- **Rated Travel:** 0~60° or 0~90°
- **Seat Shut-off Class:** Hard seal: ANSI Class IV, V; Soft seal, multi-level compound seal: ANSI Class VI
- **Outline Dimensions:** See Table 8 for details
**Design and Manufacturing Standards (Table 1):**
| Standard | Design and Manufacturing | Face-to-Face Dimensions | Flange Dimensions | Pressure and Temperature Ratings | Inspection and Testing | Leakage Class |
|----------|---------------------------|--------------------------|--------------------|----------------------------------|------------------------|----------------|
| National & Industry Standards | GB/T12224, GB/T12238, JB/T8527 | GB/T12221 | GB/T9112~9124, HG/T20592~20635, SH3406, JB/T79 | GB/T9124, GB/T12224 | JB/T9092, GB/T13927 | GB/T4213 |
| American Standard | API609 | API609 | ASME B16.5, ASME B16.47 | ASME B16.34 | API598 | ANSI/FCI70-2, ASME B16.104 |
| Other National Standards | – | JIS B2002, ISO5752 | EN1092 | – | – | – |
**Actuator Table (Table 2):**
| Model Item | Cylinder Actuator (AT/AW, ATK/AWS) | Electric Actuator |
|------------|-------------------------------------|-------------------|
| Usage | Shut off, Adjust | Shut off, Adjust |
| Power Supply | Air supply: 0.4 ~ 0.7 MPa (G) | Power: 220VAC / 50HZ, 380VAC / 50HZ |
| Connection | NPT1/4-Φ8, NPT3/8-Φ12, NPT1/2-Φ16 | Electrical connection according to configuration or user requirements |
| Control Signal | 4~20mA, 4~20mA+HART | 4~20mA |
| Action Type | Shut off: Powered on, Adjust: Positioner input signal increases | Shut off: Powered on, Adjust: Input signal increases |
| Allowable Ambient Temperature | -40°C ~ +80°C | -40°C ~ +80°C |
| Accessories | Hand operated mechanism, solenoid valve, positioner, transponder switch, etc. | Hand operated mechanism, transponder switch, surge protector, etc. |
**Product Images:**
[Image: Stainless Steel Pneumatic Butterfly Valve]
[Image: Stainless Steel Pneumatic Butterfly Valve]
[Image: Stainless Steel Pneumatic Butterfly Valve]
[Image: Stainless Steel Pneumatic Butterfly Valve]
[Image: Stainless Steel Pneumatic Butterfly Valve]
[Image: Stainless Steel Pneumatic Butterfly Valve]
This product is designed for high-performance industrial applications, offering durability, precision, and reliability under various operating conditions. It's ideal for use in water treatment, chemical processing, and other demanding environments where tight sealing and long service life are critical.
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Jiangyou ChongxinSpecial Metal Materials Co., Ltd. , https://www.zhongxindiesteel.com