Instrumentation Ball Valves—40G Series and 40 Series 
Swagelok® one-piece instrumentation ball valves have been well accepted and widely used in a variety of industries. Both the original Swagelok 40 series and the newer 40G series valves accommodate a wide range of actuator, flow path, and handle options. Swagelok 41G, 42G, and 43G series valves easily replace original stainless steel 41, 42, and 43 series valves.
- Equivalent dimensions
- Comparable materials of construction
40G Series and 40 Series Comparison
Feature |
41G, 42G, 43G |
41, 42, 43 |
44, 45 |
Valve Body
Material |
Stainless steel |
Brass
alloy 400 |
Stainless steel
brass
alloy 400 |
Packing
Material |
Modified PTFE
UHMWPE |
PTFE |
Working
Pressure |
Up to 3000 psig (206 bar)
depending on valve size |
Temperature |
–65 to 300°F
(–53 to 148°C) |
50 to 150°F
(10 to 65°C) |
Flow Coefficients |
0.08 to 2.4 |
0.05 to 2.4 |
1.5 to 12 |
End Connection
Sizes |
1/16 to 3/8 in.
3 to 8 mm |
3/8 to 3/4 in.
8 to 12 mm |
End Connection
Types |
Swagelok tube fittings, pipe threads (NPT and ISO),
VCO® O-ring fittings, integral male VCR® fittings |
Flow
Patterns |
On-off (2-way)
Switching (3-way) |
On-off (2-way)
Switching (3-way,
5-way, 7-way)
Crossover (4-way,
6-way) |
On-off (2-way)
Switching
(3-way, 5-way)
Crossover (4-way) |
More Information
Download the One-Piece Instrumentation Ball Valves—40G Series and 40 Series catalog.
Download the Live-Loaded 40 Series Ball Valves for Low-Temperature Service catalog.
Find 40G series instrumentation ball valves or 40 series instrumentation ball valves in the product search.
See an animated 40G series instrumentation ball valves product demonstration.
Other Ball Valves
General-purpose and special-application 60 series ball valves
Features - Directional handle indicates position of orifice.
- Top-loaded packing design allows adjustment with the valve inline.
- Does not require system pressure to seal.
- Virtually no dead space.
- Easily cleaned and purged.
40G Series
Top-loaded, live-loaded design:
- reduces need for packing adjustment
- compensates for wear
- improves thermal cycle performance.
Single-piece encapsulated packing reduces potential leak points.
Patent-pending, balanced-trunnion design: - supports packing, reducing need for packing adjustment
- reduces packing volume, minimizing thermal effects
- minimizes packing extrusion
- improves thermal cycle performance.
|
40 Series
Top-loaded design.
One-piece ball stem ensures alignment of stem and orifice.
Capsule seat packing.
|
Testing
Every 40G series and 40 series instrumentation ball valve is factory tested with nitrogen at 1000 psig (69 bar) or at its maximum rated pressure if less than 1000 psig (69 bar). Seats have a maximum allowable leak rate of 0.1 std cm3/min.
Cleaning and Packaging
All 40G series and 40 series instrumentation ball valves are cleaned in accordance with Swagelok Standard Cleaning and Packaging (SC-10). Cleaning and packaging in accordance with Swagelok Special Cleaning and Packaging (SC-11) is available.
Instrumentation Ball Valve Options |