Fabricated (Welded) 
The technique of welded construction allows great flexibility in the design and construction of valves as well as a wide choice of materials. Our expertise in all-welded construction provides undeniable technical advantages, mainly linked to the use of semi-finished products such as rolled plates and bars, forgings, and extruded tubes. These advantages are:
- A very low general corrosion rate
- A very low rate of abrasion and erosion
- Excellent performance at high and low temperatures as well as thermal shock resistance
- Good resistance to mechanical and thermal fatigue
Comparative table
| Construction method | Fabricated (Welded) | Cast | Solid |
|---|---|---|---|
| Price (small quantity) | ++ | + | – |
| Price (large quantity) | – | + | = |
| Lead time (small quantity) | ++ | = | – |
| Lead time (large quantity) | = | = | = |
| Mechanical strength | ++ | + | + |
Note:
++ : very advantageous, + : advantageous, = : similar, – : not recommended
Guichon valves manufactures valves of welded construction for the following types:
- Piston valve
- Globe valve
- Gate valve
- Slide valve
- Ball and plug valve
- Multiways valve
- Butterfly valve
- Tank bottom valve
- Control valve
- Injection valve
- Sampling valve
- Piloted safety valve
- Check valve
- Sight glasses & Strainers
Construction
- Materials: Carbon Steel (CS), Stainless Steel (SS), Duplex & Super Duplex, Inconel & Incoloy®, Titanium, Zirconium, Uranus® B6, Tantalum, Nickel, Hastelloy®, Monel
Uses
- Service conditions: High pressure, High temperature, Low temperature, Abrasion, Corrosion, High viscosity, Vacuum, Reliability, Low acoustic signature, Dead space free
- Types of fluids: Liquids, Liquids with solid particles – Slurry, Gas, Powder and powdery media, High viscosity fluids
- Applications: Fine chemicals, Plastics and polymers, General chemicals, Petrochemicals, Nuclear and Naval / Submarine, Cryogenic service, Other applications
Cast 
These are valves whose manufacture is done in series so as to better amortize the cost of the cast pattern. Cast construction helps optimize the shape of the valve while reducing material costs. The cost of manufacturing a cast valve is lower than that of welded construction. Lead-times, on the other hand, may be long depending on the time of manufacture at the foundry. Radiographs are often needed to ensure there is no porosity within these elements.
Comparative table
| Construction method | Fabricated (Welded) | Cast | Solid |
|---|---|---|---|
| Price (small quantity) | ++ | ++ | – |
| Price (large quantity) | – | + | = |
| Lead time (small quantity) | ++ | = | – |
| Lead time (large quantity) | = | = | = |
| Mechanical strength | ++ | + | + |
Note:
++ : very advantageous, + : advantageous, = : similar, – : not recommended
Guichon valves manufactures valves of cast construction for the following types:
- Piston valve
- Globe valve
- Gate valve
- Slide valve
- Ball and plug valve
- Multiways valve
- Butterfly valve
- Tank bottom valve
- Control valve
- Injection valve
- Sampling valve
- Piloted safety valve
- Check valve
- Sight glasses & Strainers
Construction
- Materials: Carbon Steel (CS), Stainless Steel (SS), Duplex & Super Duplex, Inconel & Incoloy®, Titanium, Zirconium, Uranus® B6, Tantalum, Nickel, Hastelloy®, Monel
Uses
- Service conditions: High pressure, High temperature, Low temperature, Abrasion, Corrosion, High viscosity, Vacuum, Reliability, Low acoustic signature, Dead space free
- Types of fluids: Liquids, Liquids with solid particles – Slurry, Gas, Powder and powdery media, High viscosity fluids
- Applications: Fine chemicals, Plastics and polymers, General chemicals, Petrochemicals, Nuclear and Naval / Submarine, Cryogenic service, Other applications
Solid, Monobloc 
Producing valves directly from bulk stock material or forgings is popular for small quantities (it avoids making a cast mold) and avoids any welds that may need to be radiographed. This type of valve has good mechanical integrity. In contrast, machining times are relatively long due to significant material removal, and the financial consequences are significant, particularly for exotic materials.
Comparative table
| Construction method | Fabricated (Welded) | Cast | Solid |
|---|---|---|---|
| Price (small quantity) | ++ | ++ | – |
| Price (large quantity) | – | + | = |
| Lead time (small quantity) | ++ | = | – |
| Lead time (large quantity) | = | = | = |
| Mechanical strength | ++ | + | + |
Note:
++ : very advantageous, + : advantageous, = : similar, – : not recommended
Guichon valves manufactures valves from solid bar stock material for the following types:
- Piston valve
- Globe valve
- Gate valve
- Slide valve
- Ball and plug valve
- Multiways valve
- Butterfly valve
- Tank bottom valve
- Control valve
- Injection valve
- Sampling valve
- Piloted safety valve
- Check valve
- Sight glasses & Strainers
Construction
- Materials: Carbon Steel (CS), Stainless Steel (SS), Duplex & Super Duplex, Inconel & Incoloy®, Titanium, Zirconium, Uranus® B6, Tantalum, Nickel, Hastelloy®, Monel
Uses
- Service conditions: High pressure, High temperature, Low temperature, Abrasion, Corrosion, High viscosity, Vacuum, Reliability, Low acoustic signature, Dead space free
- Types of fluids: Liquids, Liquids with solid particles – Slurry, Gas, Powder and powdery media, High viscosity fluids
- Applications: Fine chemicals, Plastics and polymers, General chemicals, Petrochemicals, Nuclear and Naval / Submarine, Cryogenic service, Other applications
