The Ideal Valve Inc. line of Brass Needle Valves (52 Series) are Precision Metering Valves offering extremely precise flow control of gases or liquids with a working pressure up to 3000 psi for brass valves. A long-tapered stainless steel needle combined with an ultra-fine stem thread results in unmatched precision. The valves are available in brass or stainless steel.
Maximum Operating Pressure : 3000 psi (206.7 bar)
Operating Temperature Range : -65º to 450º F (-54º to 233º C)
- 1/8″ Female NPT connections
- 22-24 turns from shutoff to full open
- Forged body construction
- Packing seal is Teflon
- Needle is stainless steel
- Body, bonnet, and seat are brass
- 9/16″ black phenolic plastic knob standard
- Other knob options available
- Straight and 90º Angle patterns available
- Metal-to-metal seat
- Vernier micrometer handle option
- Panel mounting option
- Flange mounting option
- 56 threads per inch for precision metering
- Four orifice sizes available

Dimensions

Selction Guide
| Item # | Orifice | Needle Taper | Cv (full open) | Max flow of Air in SCFH 100 psi | Body Pattern | Options |
|---|---|---|---|---|---|---|
| 52-1-11 | 1/32 in. (0.0313) | 1º 21′ | 0.019 | 77 | Straight | N/A |
| 52-2-11 | 1/16 in. (0.0625) | 3º 43′ | 0.0818 | 335 | Straight | N/A |
| 52-3-11 | 3/32 in. (0.0938) | 6º 04′ | 0.1383 | 562 | Straight | N/A |
| 52-4-11 | 1/8 in. (0.125) | 6º 04′ | 0.2224 | 904 | Straight | N/A |
| P 52-1-11 | 1/32 in. (0.0313) | 1º 21′ | 0.019 | 77 | Straight | Panel Mount |
| P 52-2-11 | 1/16 in. (0.0625) | 3º 43′ | 0.0818 | 335 | Straight | Panel Mount |
| P 52-3-11 | 3/32 in. (0.0938) | 6º 04′ | 0.1383 | 562 | Straight | Panel Mount |
| P 52-4-11 | 1/8 in. (0.125) | 6º 04′ | 0.2224 | 904 | Straight | Panel Mount |
| V 52-1-11 | 1/32 in. (0.0313) | 1º 21′ | 0.019 | 77 | Straight | Vernier Micrometer |
| V 52-2-11 | 1/16 in. (0.0625) | 3º 43′ | 0.0818 | 335 | Straight | Vernier Micrometer |
| V 52-3-11 | 3/32 in. (0.0938) | 6º 04′ | 0.1383 | 562 | Straight | Vernier Micrometer |
| V 52-4-11 | 1/8 in. (0.125) | 6º 04′ | 0.2224 | 904 | Straight | Vernier Micrometer |
| PV 52-1-11 | 1/32 in. (0.0313) | 1º 21′ | 0.019 | 77 | Straight | Panel Mount Vernier Micrometer |
| PV 52-2-11 | 1/16 in. (0.0625) | 3º 43′ | 0.0818 | 335 | Straight | Panel Mount Vernier Micrometer |
| PV 52-3-11 | 3/32 in. (0.0938) | 6º 04′ | 0.1383 | 562 | Straight | Panel Mount Vernier Micrometer |
| PV 52-4-11 | 1/8 in. (0.125) | 6º 04′ | 0.2224 | 904 | Straight | Panel Mount Vernier Micrometer |
| 52-1-12 | 1/32 in. (0.0313) | 1º 21′ | 0.019 | 77 | 90° Angle | N/A |
| 52-2-12 | 1/16 in. (0.0625) | 3º 43′ | 0.0818 | 335 | 90° Angle | N/A |
| 52-3-12 | 3/32 in. (0.0938) | 6º 04′ | 0.1383 | 562 | 90° Angle | N/A |
| 52-4-12 | 1/8 in. (0.125) | 6º 04′ | 0.2224 | 904 | 90° Angle | N/A |
| P 52-1-12 | 1/32 in. (0.0313) | 1º 21′ | 0.019 | 77 | 90° Angle | Panel Mount |
| P 52-2-12 | 1/16 in. (0.0625) | 3º 43′ | 0.0818 | 335 | 90° Angle | Panel Mount |
| P 52-3-12 | 3/32 in. (0.0938) | 6º 04′ | 0.1383 | 562 | 90° Angle | Panel Mount |
| P 52-4-12 | 1/8 in. (0.125) | 6º 04′ | 0.2224 | 904 | 90° Angle | Panel Mount |
| V 52-1-12 | 1/32 in. (0.0313) | 1º 21′ | 0.019 | 77 | 90° Angle | Vernier Micrometer |
| V 52-2-12 | 1/16 in. (0.0625) | 3º 43′ | 0.0818 | 335 | 90° Angle | Vernier Micrometer |
| V 52-3-12 | 3/32 in. (0.0938) | 6º 04′ | 0.1383 | 562 | 90° Angle | Vernier Micrometer |
| V 52-4-12 | 1/8 in. (0.125) | 6º 04′ | 0.2224 | 904 | 90° Angle | Vernier Micrometer |
| PV 52-1-12 | 1/32 in. (0.0313) | 1º 21′ | 0.019 | 77 | 90° Angle | Panel Mount Vernier Micrometer |
| PV 52-2-12 | 1/16 in. (0.0625) | 3º 43′ | 0.0818 | 335 | 90° Angle | Panel Mount Vernier Micrometer |
| PV 52-3-12 | 3/32 in. (0.0938) | 6º 04′ | 0.1383 | 562 | 90° Angle | Panel Mount Vernier Micrometer |
| PV 52-4-12 | 1/8 in. (0.125) | 6º 04′ | 0.2224 | 904 | 90° Angle | Panel Mount Vernier Micrometer |
| 52-1-13 | 1/32 in. (0.0313) | 1º 21′ | 0.019 | 77 | Straight | Flange Mount |
| 52-2-13 | 1/16 in. (0.0625) | 3º 43′ | 0.0818 | 335 | Straight | Flange Mount |
| 52-3-13 | 3/32 in. (0.0938) | 6º 04′ | 0.1383 | 562 | Straight | Flange Mount |
| 52-4-13 | 1/8 in. (0.125) | 6º 04′ | 0.2224 | 904 | Straight | Flange Mount |
| V 52-1-13 | 1/32 in. (0.0313) | 1º 21′ | 0.019 | 77 | Straight | Flange Mount Vernier Micrometer |
| V 52-2-13 | 1/16 in. (0.0625) | 3º 43′ | 0.0818 | 335 | Straight | Flange Mount Vernier Micrometer |
| V 52-3-13 | 3/32 in. (0.0938) | 6º 04′ | 0.1383 | 562 | Straight | Flange Mount Vernier Micrometer |
| V 52-4-13 | 1/8 in. (0.125) | 6º 04′ | 0.2224 | 904 | Straight | Flange Mount Vernier Micrometer |
| 52-1-14 | 1/32 in. (0.0313) | 1º 21′ | 0.019 | 77 | 90° Angle | Flange Mount |
| 52-2-14 | 1/16 in. (0.0625) | 3º 43′ | 0.0818 | 335 | 90° Angle | Flange Mount |
| 52-3-14 | 3/32 in. (0.0938) | 6º 04′ | 0.1383 | 562 | 90° Angle | Flange Mount |
| 52-4-14 | 1/8 in. (0.125) | 6º 04′ | 0.2224 | 904 | 90° Angle | Flange Mount |
| V 52-1-14 | 1/32 in. (0.0313) | 1º 21′ | 0.019 | 77 | 90° Angle | Flange Mount Vernier Micrometer |
| V 52-2-14 | 1/16 in. (0.0625) | 3º 43′ | 0.0818 | 335 | 90° Angle | Flange Mount Vernier Micrometer |
| V 52-3-14 | 3/32 in. (0.0938) | 6º 04′ | 0.1383 | 562 | 90° Angle | Flange Mount Vernier Micrometer |
| V 52-4-14 | 1/8 in. (0.125) | 6º 04′ | 0.2224 | 904 | 90° Angle | Flange Mount Vernier Micrometer |