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Flow Control Valve
**Flow Control Valve**
The flow control valve is designed for precise regulation of fluid flow in various industrial applications. It features a robust construction, versatile connection options, and a wide range of pressure ratings to meet different operational needs.
**Basic Specifications**
- **Model No.:** DN20-DN200
- **Connection Type:** Flange
- **Function Types:** DDCV Double Lobe, NRVr Silence, SFCV Rubber Lobe, NRVz Silence, NRVG Silence
- **Flow Direction:** Reversing
- **Application:** Suitable for industrial, water treatment, and household use
- **Nominal Pressure:** ANSI 150, 300, 600 lb; JIS 10, 16, 20, 30, 40K; PN 1.6, 2.5, 4.0, 6.4 MPa
- **Thread Types:** DIN, NPT, RC, BSP, G, etc.
- **Transport Packaging:** Seaworthy packing
- **Origin:** Tianjin, China
**Material & Structure**
- **Material:** Cast Steel
- **Structure:** Butterfly
- **Sealing Form:** Gland Packings Globe Valve
- **Standard:** ANSI
- **Type:** Single Seat, Double Seat, Sleeve
- **Connection:** Flange (FF, RF, RJ, LG), Flanged Standard
- **Trademark:** GHL
- **Specification:** DN20-DN200
- **HS Code:** 8481804090
**Valve Body Details**
- **Type:** Single seat, double seat, sleeve
- **Nominal Diameter:** DN20-DN200
- **Connection:** Flange (ANSI B16.5, JIS B2201, JB/T79.1 PN1.6MPa, JB/T79.2)
- **Thread:** DIN, NPT, RC, BSP, G
- **Welding:** GB12224-89
- **Sealing Surface:** PN16 convex, PN40/PN63/PN100 concave
- **Material:** WCB, 304, 316, 316L
- **Bonnet Types:** Standard (-20°C ~ +200°C), Low Temperature (-60°C ~ -196°C), Cooling (-40°C ~ 450°C), Bellows Seal
- **Gland Type:** Press plate
- **Packing:** V-type PTFE, Flexible Graphite
**Valve Components**
- **Core Type:** Single seat plunger, double seat, sleeve
- **Core Seat:** 304, 316, 316 + SLT
- **Flow Characteristics:** Equal percentage, linear, quick-opening
**Actuator**
- **Type:** Electric actuator
- **Action Type:** Direct action, reverse action
- **Control Type:** Proportional or switch type
- **Input Signal:** 4-20mA, 0-10V, 1-5V, ON-OFF
- **Output Signal:** 4-20mA or passive contact signal
- **Power Supply:** AC220V, AC380V, DC24V
- **Explosion Proof Class:** ExdIIBT4, ExdIICT6 (optional)
- **Manual Device:** With handle
- **Accessories:** Heater, overload protection (configured as per requirement)
**Performance**
- **Rated KV Value:** Refer to the table
- **Flow Characteristics:** Linear, equal percentage, quick opening
- **Adjustable Range:** 50:1
**Leakage Class**
- **Metal Seal:** Less than 0.01 (ANSI B16.104-1976 IV)
- **Soft Seal:** Less than 0.00001%
- **Hysteresis:** ≤ 1%
- **Dead Zone:** ≤ 1%
- **Basic Error:** ±1%
**Technical Table**
| Items | ADF-2F | ADF-20F |
|-------|--------|---------|
| Applicable Pressure | Max. 10 kgf/cm² | Max. 20 kgf/cm² |
| Applicable Fluid | Hot & Cold Water | Hot & Cold Water |
| Flow Temperature | Max. 170°C | Max. 170°C |
| Structure | Diaphragm | Diaphragm |
| Differential Pressure Adjustment Range | 0.1–1.5, 0.5–2, 1.5–5 kgf/cm² | 0.1–1.5, 0.5–2, 1.5–5 kgf/cm² |
| Flow Adjustment Range | 3.3–100% of rated flow | 3.3–100% of rated flow |
| End Connection | ANSI 150Lb/JIS 10K RF Flange | ANSI 300Lb/JIS 20K RF Flange |
| Materials | | |
| Body | Cast Iron | Cast Steel |
| Disc/Seat | Stainless Steel, Cast Bronze | Stainless Steel, Cast Bronze |
| Diaphragm | EPDM | EPDM |
| Hydraulic Test Pressure | 15 kgf/cm² | 30 kgf/cm² |
This flow control valve is ideal for systems requiring accurate flow regulation under varying pressure conditions. It is built with high-quality materials and advanced sealing technology to ensure long service life and minimal leakage. The design supports multiple installation standards and can be customized according to specific application requirements. Whether used in industrial, water treatment, or residential settings, this valve delivers reliable performance and ease of maintenance.