Products
Forged steel valves
Four lines of valves for general and industrial service, in sizes from ¼" to 2". Consult our engineering department for materials, pressure classes and special configurations.
Gate valve
General service, oils, petroleum and gas, steam and fluids of different viscosities. NCM 8481.80.93 See details →
Globe valve
General service, liquids, vapours and gases. Throttling and shut-off. NCM 8481.80.94 See details →
Needle valve
General service, liquids, vapours and gases. Instrumentation and high pressure. NCM 8481.80.979 See details →
Check valve
Oil, petroleum, steam and liquid fluids of different viscosities. Not suitable for dry gas service. NCM 8481.30.00 See details →How to specify a valve
The valve code
LVM valves are designated with a code of numbers and letters which includes all the information needed to make delivery easier. Nine positions define the complete valve.
54C-XO-G5-N8F
- 5Valve type. Gate valve, bolted bonnet, class 800.
- 4Size. ¾".
- CBody and bonnet. ASTM A-105 steel.
- XOTrim material. Trim 10, Gr. 316.
- GGasket. Spiral wound AISI 316 / graphite.
- 5Packing. Flexible graphite.
- NEnd type. NPT threaded.
- 8Class. 800.
- FAdditional specification. Full port.
| Letter | ASTM designation | Application |
|---|---|---|
| C | ASTM A-105 | Forged carbon steel. The standard material for general service. |
| L | ASTM A-350 LF2 cl. 1 | Low-temperature carbon steel, impact tested. |
| F | ASTM A-182 F-5 | 5Cr-½Mo alloy steel, for high temperature. |
| H | ASTM A-182 F-9 | 9Cr-1Mo alloy steel, for high temperature. |
| G | ASTM A-182 F-11 cl. 2 | 1¼Cr-½Mo alloy steel, for high temperature. |
| X | ASTM A-182 F-316L | Austenitic stainless steel, for corrosive service. |
| Letters | API 602 denomination | Composition |
|---|---|---|
| CO | TRIM 1 | 13 % Cr |
| CS | TRIM 8 | 13 % Cr, seat with stellite |
| CT | TRIM 5 | 13 % Cr, wedge, disc or piston and seat with stellite |
| XO | TRIM 10 | AISI 316 |
| XS | TRIM 12 | AISI 316, seat with stellite |
| XT | TRIM 16 | AISI 316, wedge, disc or piston and seat with stellite |
| MO | TRIM 9 | Monel |
Configuration
Gaskets, packing, end types and classes
| Letter | Type |
|---|---|
| G | Spiral wound, 316 / graphite |
| T | Spiral wound, 316 / PTFE |
| M | Spiral wound, Monel / PTFE |
| C | Solid flat metal, copper |
| I | Solid flat metal, AISI 316 |
| No. | Type |
|---|---|
| 2 | PTFE braided |
| 3 | PTFE, “V” ring type |
| 5 | Flexible graphite |
| 6 | Special |
| No. | Class |
|---|---|
| 1 | 150 |
| 3 | 300 |
| 6 | 600 |
| 8 | 800 |
| 2 | 1500 |
| 4 | 2500 |
| 5 | 5000 |
| 7 | Especial / Special |
| Letter | Ends |
|---|---|
| N | Threaded, NPT |
| W | Socket weld, SW |
| T | Butt weld, BW |
| B | Flanged, RF |
| R | Flanged, RJ |
| G | Threaded, BSPT |
| J | SW × NPT |
| K | NPT × SW |
| L | NPT × BW |
| M | SW × BW |
Threaded and socket weld end dimensions according to ANSI B16.11 and B1.20.1. Flanged ends according to ANSI B16.5, attached to the body by full penetration butt welding, with welder and welding procedure qualified in accordance with ASME BPVC section IX.
| Letter | Detail |
|---|---|
| F | Full port (gate and swing check valves) |
| A | Needle point disc (globe valve) |
| C | Stop-check (globe valve) |
| P | Parabolic disc (globe valve) |
| E | Reinforced extended end (gate valve) |
| U | With purge valve (needle valve) |
| I | Position indicator (globe and needle valves) |
| T | Locking device (gate and globe valves) |
| V | Live-loading packing (gate and globe valves) |
| R | With spring (horizontal ball or piston check valve) |
| O | With O-Ring (horizontal piston check valve) |
| N | With renewable seat (vertical check valve) |
Engineering department
Need a configuration that is not in the catalogue?
Given the large number of possible combinations, our engineering department is at your disposal to advise on selection and even to adapt the design to your requirements when the application calls for it.