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Compact Steel Check Valve (GAH11H/GAH61H)
**Product Specifications**
- **Model No.:** GAH11H / GAH61H
- **Flow Direction:** Unidirectional
- **Standard:** API 602
- **Application:** Industrial Use
- **Pressure Rating:** Class 150 to Class 1500
- **Size:** 3/8" to 2"
- **Trademark:** GOOLE, OEM
- **Transport Package:** Plywood Case
- **Specification:** ISO 9001
- **Origin:** China (Mainland)
- **HS Code:** 8481804090
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**Forged Steel Pressure Seal Swing Check Valve – Class 900–1500**
This forged steel swing check valve is designed for high-performance applications in industrial environments. It features a robust construction and is suitable for use in pipelines with pressure ratings ranging from Class 150 to Class 1500.
**Standard Specifications**
The valve is manufactured according to the following standards:
- **Design and Manufacturing:** API 602, BS 5352, ANSI B16.34
- **Connection Ends:**
- Socket Welded: ANSI B16.11
- Threaded (NPT): ANSI B1.20.1
- Butt-Welded: ANSI B16.25
- Flanged: ANSI B16.5
- **Inspection & Testing:** API 598
- **Optional NACE MR 0175 Compliance**
- **Tag:** MSS SP 25
**Construction Features**
- **Spring-loaded design** ensures reliable sealing performance even at low pressures.
- **Y-pattern straight-through flow path** minimizes flow resistance and improves efficiency.
**Product Range**
- **Port Options:** Full Port (FP), Reduced Port (RP)
- **Structure Types:** Bolted Cover (BC), Welded Cover (WC), Pressure Self-sealing Cover (PSC)
- **Disc Types:** Swing Type, Piston Type, Ball Type
- **Pressure Classes:** 150, 300, 600, 800, 900, 1500, 2500
- **Size Range:** 3/8" to 2"
- **End Connections:** FLG, SW (Socket Weld), Threaded (NPT/BSP), BW (Butt Weld)
- **Optional Materials:** Carbon Steel (A105, LF2), Stainless Steel (F304, F304L, F316, F316L), Duplex (F51, F55), Alloy (F1, F5, F9, F11, F22)
- **Special Design:** Y-pattern forged check valve available
**Applications**
Forged steel valves are ideal for smaller-sized pipelines (under 2", DN50). Compared to cast valves, they offer better structural uniformity, higher density, greater strength, and tighter dimensional tolerances. These advantages make them widely used in industries such as petroleum, natural gas, chemical, and power generation.
**Main Parts Material**
| No | Part Name | Material |
|----|-----------|----------|
| 1 | Body | A105, A182 F22, A182 F304(L), A182 F316(L) |
| 2 | Disc | A276 420, A276 304, A276 304(L), A276 316(L) |
| 3 | Gasket | 316 + Graphite, 316 + PTFE |
| 4 | Bonnet | A105, A182 F22, A182 F304(L), A182 F316(L) |
| 5 | Nameplate | SS |
| 6 | Bolt | A193 B7, A193 B16, A193 B8(M) |
| 7 | Ball | A182 F304 |
**Applicable Media:** Water, Steam, Oil, Acid, etc.
**Applicable Temperature:** -29°C to 550°C
**Dimensions (mm) and Weights (kg)**
| NPS | RB | 3/8 | 1/2 | 3/4 | 1 | 1 1/4 | 1 1/2 | 2 | / |
|-----|----|-----|-----|-----|---|--------|--------|---|---|
| SB | | 3/8 | 1/2 | 3/4 | 1 | 1 1/4 | 1 1/2 | 2 | |
| L | | 92 | 111 | 111 | 120 | 152 | 172 | 200 | 220 |
| W | | 65 | 79 | 79 | 97 | 104 | 120 | 139 | 215 |
| WT(kg) | BB | 1.6 | 3.4 | 3.3 | 5.5 | 6.0 | 9.2 | 12.9 | 16.2 |
| | WB | 1.3 | 3.2 | 3.1 | 4.8 | 5.4 | 8.5 | 11.2 | 14.3 |
Note: Other materials can be provided upon request.
This product is ideal for demanding industrial environments where reliability, durability, and precision are essential. Whether you need a standard or custom solution, our forged steel check valves deliver consistent performance and long-term value.