(API 624 Additional High Temperature Version)
Key Specifications / Features
We are a leading supplier of high-performance ASTM A995 4A Swing Check Valves, meticulously engineered to comply with API 6D and BS 1868 standards. These valves feature a durable Duplex Stainless Steel body, offering superior corrosion resistance and strength. With a 4-inch (DN100) size and a Class 2500 LB (PN420) pressure rating, they are designed for demanding industrial applications. The RF flanged ends ensure secure and reliable connections, while the bolted bonnet provides easy access for maintenance.
- Model no.: MV-20250621-CSCV-01
- Hits: 1
- Categories: Cast Steel Check Valve
- Tags: ASTM A995 4A Check Valve, Swing Check Valve, 4 Inch Check Valve
Detail Information
Product Name: ASTM A995 4A Swing Check Valves
Type: Swing Check Valve
Design Standard: API 6D, BS 1868
Body & Trim Material: ASTM A995 4A, Duplex Steel
Size: 4 Inch, DN100
Pressure: Class 2500 LB, PN420
End Connection: RF Flanged
Face to Face Standard: ASME B16.10
Test & Inspection Standard: API 598
Certificates: TA-Luft, ISO 15848-1, API 622, ect
Product Range
Body Materials: Cast Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel, etc
Gasket & Packing Material: Graphite/PTFE
Size Range: 2-60 Inch, DN50-DN1500
Pressure Range: Class 150-2500 LB, PN16-PN420
End Connection: RF, RTJ, BW
Temperature Range: -29°C to 429°C
Medium: Water, Oil, Gas, etc
The packing used in cast steel valves is the M800 series graphite packing,
with a graphite carbon content exceeding 99% and a sulfur content below 50 PPM.
The dynamic leakage rate, as tested according to API 622, is less than 12 PPM.
The static leakage rate is below 6 PPM.
All the gaskets used are low-emission gaskets certified by TÜV Rheinland TA-LUFT
ISO 15848-1 Valve Tested Case Example: NPS4 Class 300 Valve
4-inch 300 LB Globe Valve: ISO 15848-1 Test at Ambient Temperature for 205 Cycles, High Leakage Rate of 1.8×10−7, Maximum Body Leakage at 11.6 PPMV
API 624 Valve Test Case 1: 12-inch 150 LB Gate Valve
12-inch 150 LB Gate Valve
API 624 Test
Maximum Packing Leakage: 46.7 PPMv
API 624 Valve Test Case 2： 12-inch 600 LB Gate Valve
12-inch 600 LB Gate Valve
API 624 Testing
Maximum packing leakage: 32 ppmv
Fire Test Certification of Valve Packing
Fire Test Report and Certification for 4-inch Gate Valve with M800 Packing
ISO 15848-1 Valve Tested Case Example: NPS12 Class 300 Valve
12-inch 300 LB Gate Valve
ISO 15848-1 Test at Ambient Temperature for 205 Cycles
High Leakage Rate: 1.6×10−6
Maximum Body Leakage: 7.7 PPMV
The API 624 test for the API 600 WCB 12-inch 150 LB gate valve utilized an M600 low-emission graphite packing set.
The ISO 15848-2 Type A test for the API 600 WCB 2-inch 150 LB gate valve, which requires emissions below 50 PPMV, was conducted using an M600 low-emission graphite packing set.
