● The valve self-sealing type bonnet.
● The disc wedging phenomenon is not liable to be caused when temperature rises.
● Flexible wedge.
● Full Stellite overlay seat sealing surface
● Full wedge guiding design.
● Absolute bonnet joint leak proof.
● Optional by-pass design.
1.The pressure Self-sealing gate valves are designed in accordance with API600 and ASME B16.34 for service of high temperature and high pressure and are widely used in fossil fuel power plant.
2.Compared with bolted bonnet joint valves, it provides absolute reliable sealing of the bonnet joint, so that the pressure seal valves are more compact and rigid as well as maintenance cost-effective at high temperature and high pressure service.
Payment Term | L/C, T/T, Western Union,Paypal |
Delivery Time | 15 – 30 days after payment |
Seaport | Shanghai Or Ningbo China |
The 3rd Inspection | Available |
Sample | Available for Self-sealing gate valves |
Warranty Period | 18 months after shipments and 12 months after installed |
Valve Test | 100% quantity tested before delivery |
Packing | Plywood Case for Self-sealing gate valves |
MOQ | 1 Pc for Self-sealing gate valves |
Nameplate | According to customer for Self-sealing gate valves |
Color | According to customer for Self-sealing gate valves |
Shipment | By sea,By Air ,By Express,and door to door available |
OEM/ODM Service | Available |
Customers have special requirements for products and must provide the following instructions in the order contract:
1.Painting Color
2.Confirmed drawing with sign and stamp
3.Service medium, temperature and pressure range
4.Inspection standards and other requirements such as 3rd party inspection .
5.Tell requirement for the logo cast on the valve .
6.Tell requirement about the logo on the Lever. Or label sample.
7.Tell If have special requirement for package .
Inspection procedure for API Cast Steel Gate Valve
● Chemical Analysis
1. Manual Methods
2.PMI
● Mechanical performance
1. Tensile Strength
2.Yield Strength
3. Charpy impact Test
● Valve thickness test
Ultrasonic Thickness Gauge
● Dimension and Roughness Test
Caliper/Digital Caliper/Thread Gauge etc
● Hardness Test
Hardness Guage
● Welding Procedure Qualification
● NDT Test (MT,PT,UT,RT)
● Torque Test
● Pressure Test
● Painting Inspection
● Final Inspection (Nameplate,Visual appearance…)
TRIM |
MATERIAL |
SEAT |
DISK |
BACKSEAT |
STEM |
NOTES |
1 |
410 | 410 | 410 | 410 | 410 | |
2 |
304 | 304 | 304 | 304 | 304 | |
3 |
F310 | 310 | 310 | 310 | 310 | |
4 |
Hard 410 | Hard 410 | Hard 410 | 410 | 410 | Seats 750BHN Min |
5 |
Hard faced | Stellite | Stellite | 410 | 410 | |
5A |
Hard faced | Ni-Cr | Ni-Cr | 410 | 410 | |
6 |
410 and Cu-Ni | Cu-Ni | 410 | 410 | 410 | |
7 |
410 and Hard 410 | Hard 410 | Hard 410 | 410 | 410 | Seats 750BHN Min |
8 |
410 and Hard Faced | Stellite | 410 | 410 | 410 | |
8A |
410 and Hard Faced | Ni-Cr | 410 | 410 | 410 | |
9 |
Monel | Monel | Monel | Monel | Monel | |
10 |
316 | 316 | 316 | 316 | 316 | |
11 |
Monel and Hard Faced | Stellite | Monel | Monel | Monel | |
12 |
316 and Hard Faced | Stellite | 316 | 316 | 316 | |
13 |
Alloy 20 | Alloy 20 | Alloy 20 | Alloy 20 | Alloy 20 | |
14 |
Alloy 20 and Hard Faced | Stellite | Alloy 20 | Alloy 20 | Alloy 20 | |
15 |
304 and Hard Faced | Stellite | Stellite | 304 | 304 | |
16 |
316 and Hard Faced | Stellite | Stellite | 316 | 316 | |
17 |
347 and Hard Faced | Stellite | Stellite | 347 | 347 | |
18 |
Alloy 20 and Hard Faced | Stellite | Stellite |