- Item Code: IS 025
- Pressure Rating: CL-1
- Testing Standard: IS 6157
- Size Range: 15mm to 100mm
- Product Standard: IS 778
Suitable For
Material Specification
| P. No. | NAME OF PART | MATERIAL | SPECIFICATION | |
|---|---|---|---|---|
| 1 | BODY | LEADED TIN BRONZE | IS:318 Gr. LTB2 | |
| 2 | NUT | EXTRUDED BRASS | IS:319 (HALF HARD) | |
| 3 | WASHER | BRASS | ||
| 4 | SPRING | PH. BRONZE | IS:7608 | |
| 5 | DISC | GUN METAL / HIGH TENSILE BRASS | IS:318 Gr. LTB2 / IS:6912 Gr. FHTB1 | |
Dimensional Data
| SIZE (mm) | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 |
|---|---|---|---|---|---|---|---|---|---|
| L | 65 | 70 | 75 | 85 | 95 | 110 | 130 | 145 | 190 |
| Rp | 1/2" | 3/4" | 1" | 1-1/4" | 1-1/2" | 2" | 2-1/2" | 3" | 4" |
| Item Code | IS025 | IS025 | IS025 | IS025 | IS025 | IS025 | IS025 | IS025 | IS025 |
Principle Features
- Design std.: IS:778.
- Single piece design.
- Screwed female parallel threads to IS:554.
- Permits flow in one direction and close automatically if the flow reverses.
- Spring-loaded design allow installation in both horizontal and vertical pipeline.
- The design conceived for operation in upward flow only.
- Always install vertically with pressure below the seat and inlet end down.
- Disc is precisely guided at top and bottom, assuring accurate seating.
- Excellent choke for suction lines and general service.
PRESSURE RATING: CL-1
| TEST PRESSURE (HYDROSTATIC) : | |
|---|---|
| CLASS-1 | |
| BODY | SEAT |
| 1.5 Mpa (217.5 psig) | 1.0 Mpa (145 psig) |
END CONNECTION
- Flange as per IS:778 Class-I.
UTILISATION & SERVICE
- "LEADER" GUN METAL vertically Lift Check valves are suitable for above-ground & underground installations.
- Best suited for portable water, treated fresh water, neutral liquids, Air & some gases.
WORKING PRESSURE
- Maximum Working Pressure: (CLASS-I) 10 Bar.
- See Pressure/Temperature Diagram.
TEMPERATURE LIMITS
- Maximum working temperature: 45°C.
- See Pressure/Temperature Diagram.