Manufacturer of Temperature and Pressure Instruments and Controls Since 1882
200 Elizabeth St, Mount Clemens, MI 48043
631.207.1200
TABLE 1 - PRESSURE SNUBBERS
| STYLE CODE | HOUSING MATERIAL Code |
HOUSING MATERIAL |
NPT CODE |
NPT | PSI RATING AT 70°F |
|---|---|---|---|---|---|
| PSN | B | Brass | 25 | 1/4" | 1,500 psi |
| S | 303 S.S. | 50 | 1/2" | 1,500 psi |
TABLE 2
| PORSITY SYMBOL CODE |
TYPE OF SERVICE |
PORE OPENING MEAN |
PORE OPENING MAX |
|---|---|---|---|
| E | Water and Light Oil (30 to 225 SSU*) | .0013 | .0025 |
| D | Oil (225 to 500 SSU) | .0025 | .005 |
| G | Air and other Gases | .0004 | .0009 |
*SSU - Saybolt Seconds Universal Viscosity
For complete Catalog No. use Coding from Table 1 & 2 EX: PSN-B-25-E=Brass Housing 1/4" NPT, E Porosity Disc.
NEEDLE VALVE
| CAT. NO. | SIZE | MATERIAL | RATING |
|---|---|---|---|
| 25NVBR | 1/4" FNPT x 1/4" FNPT | Brass | 600 psi & 300°F |
| 25NVSS | 1/4" FNPT x 1/4" FNPT | 304S.S. | 4000 psi & 150°F |
| 50NVBR | 1/2" FNPT X 1/2" FNPT | Brass | 600 psi & 300°F |
| 50NVSS | 1/2" FNPT X 1/2" FNPT | 304S.S. | 4000 psi & 150°F |
SYPHONS
| CAT. NO. | SIZE | MATERIAL | RATING |
|---|---|---|---|
| SY-14S | 1/4" NPTM x 1/4" NPTM | Iron | 300 psi & 300°F |
| SY-14B | 1/4" NPTM x 1/4" NPTM | Brass | 400 psi & 300°F |
| SY-14SS304 | 1/4" NPTM x 1/4" NPTM | 304S.S. | 430 psi & 800°F |
| SY-14SS316 | 1/4" NPTM x 1/4" NPTM | 316S.S. | 450 psi & 800°F |
| ASY-12S | 1/2" NPTM x 1/2" NPTM | Iron (Angle) | 300 psi & 300°F |
| ASY-12B | 1/2" NPTM x 1/2" NPTM | Brass (Angle) | 400 psi & 300°F |
NOTE: All Syphons Schedule 40. Schedule 80 available on request.
CHROME PLATED BRASS BALL VALVES
| CAT. NO. | SIZE | MATERIAL | RATING |
| LH-14FF | 1/4" NPTF x 1/4" NPTF | Chrome Plated Brass | 450 psi & 250°F |
| LH-14MF | 1/4" NPTM x 1/4" NPTF | Chrome Plated Brass | 450 psi & 250°F |
| LH-12FF | 1/2" NPTF x 1/2" NPTF | Chrome Plated Brass | 450 psi & 250°F |
PRESSURE TEST PLUGS
Weiss Temperature/Pressure Plugs allows for quick, efficient and accurate testing of
hydronic pipe lines throughout HVAC systems. Offered in both nordel (blue cap) for
hot and chilled water and neoprene (red cap) for natural gas. Weiss plugs are consistently rated at 1000 psi. The self-sealing core insures long life and continuous service.
| CAT. NO. | DESCRIPTION | BODY & CAP |
|---|---|---|
| BP25-NR | 1/4" NPT Nordel | Brass |
| BP25-NP | 1/4" NPT Neoprene | Brass |
| BP50-NR | 1/2" NPT Nordel | Brass |
| BP50-NP | 1/2" NPT Neoprene | Brass |
| BP25L-NR | 1/4" NPT Nordel w/ 1-3/4" Lag | Brass |
| BP25L-NP | 1/4" NPT Neoprene w/ 1-3/4" Lag | Brass |
| CAT. NO. | ACCESSORIES |
|---|---|
| TPK | Test Kit |
| GA18 | Gauge Adapter |
| PT220 | 1" Dial Pocket Test 0/220°F |
| PT125 | 1" Dial Pocket Test 0/125°F |
| TL25-030-4L | 2 1/2" Gauge 0-30 psi |
| TL25-160-4L | 2 1/2" Gauge 0-160 psi |
THERMAL ISOLATOR
Coiled Tubing Assembly designed to protect Pressure Instruments from high medium temperature that might damage the instrument or affect its rated accuracy. Capable of reducing process temperature up to 305°F (170°C).
* Male instrument connection is standard, since the use of a Weiss 25NVSS Needle Valve is recommended between the gauge and isolator.
| CAT. NO. | DESCRIPTION |
|---|---|
| TI25M | 1/4" NPT Male Instrument Connection* 1/4" NPT Male Process Connection |
| TI25F | 1/4" NPT Male Instrument Connection* 1/4" NPT Female Process Connection |
© 2022 Weiss Instruments LLC, 200 Elizabeth St, Mount Clemens, MI 48043
