Product Line Details
ASME Pressure – Temperature Rating
Maximum Non-Shock Pressure – psi
| Temp ° F |
ASME 125
2″ – 12″ Valve |
ASME 125
14″ – 24″ Valve |
| 150° F |
200 psi |
150 psi |
| 200° F |
190 psi |
135 psi |
| 225° F |
180 psi |
130 psi |
| 250° F |
175 psi |
125 psi |
| 275° F |
170 psi |
120 psi |
| 300° F |
165 psi |
110 psi |
| 325° F |
155 psi |
105 psi |
| 350° F |
150 psi |
100 psi |
| 400° F |
140 psi |
– |
| 450° F |
125 psi |
– |
| Hydrostatic Test – psi |
350 psi |
265 psi |
TECHNO Dual-plate, Metal-hinged Wafer-style Check Valves
- Compact wafer-style, one-piece design
- Center post fully supports the internal assembly without external pins or plugs
- No fugitive emissions to atmosphere is ensured due to its standard design, which eliminates through holes and pipe plugs in the body
- Maximum flow area reduces pressure loss
- Reduces installation space and time
VALVE PLATES
The dual-plate design produces increased strength with reduced opening and closing time.
CLAMP PLATES
Clamp plates offer additional strength to valve plates and allow seals to be changed easily.
SEALS
Specially designed flat, full-contact seals maintain positive shutoff at low working pressures. Unlike most other valves, these seals are replaced easily in the field.
SPRINGS
Torsion springs assist valve plate closure, preventing flow reversal. Consistent valve response ensures against slamming and water hammer.
SHAFT
The shaft features heavy-duty, corrosion-resistant construction.
SHAFT SUPPORTS
Shaft supports act as stops to prevent over-travel of valve plates. They are corrosion resistant with large shaft-bearing surfaces and are easily removable for internal assembly, maintenance or change.
THRUST WASHERS
Thrust washers reduce friction and wear of valve plate hinges.
Variety of Configurations
Techno offers a wide variety of wafer bodies in different styles and materials. These can be assembled with different disc, spring, and elastomer seal choices to make a valve that exactly fits your application. Contact pdblowers if you would like a quote on any of these options.
| BODY |
INTERNALS |
SPRING |
SEAT |
CLASS |
Aluminum
Cast Iron
Carbon Steel
Cast Steel
316 Stainless Steel |
Aluminum
Bronze
Aluminum Bronze
Carbon Steel
Cast Steel
316 Stainless Steel |
302 SS
316 SS
INCONEL X-750
No Spring |
Buna N
EPDM
Silicone
Viton A |
ASME 125
ASME 150
ASME 300
ASME 600
50 psi-cwp
100 psi-cwp
125 psi-cwp |
Techno 5050 vs US Valve 31 Series
pdblowers supplies both the 5050 Series from Techno and the 31 Series from US Valves. These valves are equivalent in performance, materials, and dimensions.
The main functional difference between the two is the retainerless design of the Techno 5050 series. These valves feature a center post that fully supports the internal assembly without any external pins or plugs, so there are no holes and plugs in the body which could potentially allow fugitive emissions to atmosphere. If you have a gas application you may want to consider a 5050 valve from Techno or contact us about a retainerless option from US Valve.
The other difference is the lower cost and wider availability of the standard US Valve 31 series. At pdblowers we keep some models of the 31 series in stock and, when they need to be ordered from the factory, lead times are typically only a few days. Average lead times for Techno 5050 Valves are 1-2 weeks.
