ASTM A995 4A Swing Check Valves, API 6D, 4 Inch, 2500 LB, RF

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.