Title:
Metering Valves
MV21/MV22/MV23 Series
Features
• Maximum operating pressure
MV21: 2000 psi (138 bar)
MV22, MV23: 1000 psi (69 bar)
• End connections: GENLOK and NPT (Please refer to the specification tables for available dimensions)
• Panel mounting available
• Cleaned and degreased for oxygen service according to CGA G-4.1 and ASTM G93 Class C, respectively
| Body Material | Series | Knob | Inlet \ Outlet Connection | O-ring |
| SS: 316 SS | MV21 MV22 MV23 | Blank: Slotted Handle M: Vemier Handle | TF4: 1/4" GENLOK TF2: 1/8" GENLOK NT4: 1/4" NPT NT2: 1/8" NPT FNT2: 1/8" NPT(F) | Blank: Standard B: Nitrile Butadiene Rubber A: Angle Pattern (MV22, MV23 available) |
Fractional Tube Fittings
| Model | Orifice (mm) | CV | Connection Type | Dimension (in.) | |||||
| Inlet | Outlet | A | B | C | D Close | E Open | |||
| SS-MV21-TF2 | 0.8 | 0.004 | 1/8" GENLOK | 1/8" GENLOK | 2.09 | 1.04 | 0.33 | 2.58 | 3.00 |
| SS-MV21-TF4 | 0.8 | 0.004 | 1/4" GENLOK | 1/4" GENLOK | 2.31 | 1.15 | 0.33 | 2.58 | 3.00 |
| SS-MV22-TF2 | 1.5 | 0.03 | 1/8" GENLOK | 1/8" GENLOK | 2.52 | 1.24 | 0.33 | 2.69 | 3.11 |
| SS-MV22-TF4 | 1.5 | 0.03 | 1/4" GENLOK | 1/4" GENLOK | 2.52 | 1.24 | 0.33 | 2.69 | 3.11 |
| SS-MV23-TF2 | 3.3 | 0.15 | 1/8" GENLOK | 1/8" GENLOK | 2.52 | 1.24 | 0.33 | 2.69 | 3.11 |
| SS-MV23-TF4 | 3.3 | 0.15 | 1/4" GENLOK | 1/4" GENLOK | 2.52 | 1.24 | 0.33 | 2.69 | 3.11 |
NPT Fittings
| Model | Orifice (mm) | CV | Connection Type | Dimension (in.) | |||||
| Inlet | Outlet | A | B | C | D Close | E Open | |||
| SS-MV21-NT2 | 0.8 | 0.004 | 1/8" Male NPT | 1/8" Male NPT | 2.31 | 1.15 | 0.33 | 2.58 | 3.00 |
| SS-MV21-NT4 | 0.8 | 0.004 | 1/4" Male NPT | 1/4" Male NPT | 2.44 | 1.22 | 0.33 | 2.58 | 3.00 |
| SS-MV21-FNT2 | 0.8 | 0.004 | 1/4" Female NPT | 1/4" Female NPT | 2.44 | 1.22 | 0.33 | 2.58 | 3.00 |
| SS-MV22-NT2 | 1.5 | 0.03 | 1/8" Male NPT | 1/8" Male NPT | 2.52 | 1.24 | 0.33 | 2.69 | 3.11 |
| SS-MV22-NT4 | 1.5 | 0.03 | 1/4" Male NPT | 1/4" Male NPT | 2.52 | 1.24 | 0.33 | 2.69 | 3.11 |
| SS-MV22-FNT2 | 1.5 | 0.03 | 1/4" Female NPT | 1/4" Female NPT | 2.52 | 1.24 | 0.33 | 2.69 | 3.11 |
| SS-MV22-NT2 | 3.3 | 0.15 | 1/8" Male NPT | 1/8" Male NPT | 2.52 | 1.24 | 0.33 | 2.69 | 3.11 |
| SS-MV22-NT4 | 3.3 | 0.15 | 1/4" Male NPT | 1/4" Male NPT | 2.52 | 1.24 | 0.33 | 2.69 | 3.11 |
| SS-MV22-FNT2 | 3.3 | 0.15 | 1/4" Female NPT | 1/4" Female NPT | 2.52 | 1.24 | 0.33 | 2.69 | 3.11 |
| Components | Material |
| 1. Handle | 316SS |
| 2. Panel Nut | 316SS |
| 3. Bonnet Sleeve | 316SS |
| 4. Valve Stem | 316SS |
| 5. Bonnet | 316SS |
| 6. Lower Gland | PTEF |
| 7. O-ring | Fluorine Rubber |
| 8. Body | 316SS |
Pressure-Temperature Rating
| Series | Pressure Temperature Ratings | Orifice in. (mm) | Shutoff | Stem Taper | |
| Temperature °F(°C) | Working Pressure psi (bar) | ||||
| MV21 | -10~400 (-23~204)* | 2000(138) | 0.032(0.8) | No | 1° |
| M22 | -10~400 (-23~204)* | 1000(69)** | 0.06(1.5) | No | 3° |
| M23 | -10~400 (-23~204)* | 1000(69)** | 0.13(3.3) | Yes••• | 5° |
* -10 to 300°F (-23 to 148°C) for Buna N
** Downstream pressure 500 psig (34.4 bar) max when valve requires adjustment at pressure due to strength limitations of the fine-pitch threads and high operating torque.
*** NV23 series valves are not recommended for shutoff in vacuum or gas service, or for repetitive shutoff in liquid service.