Manual Exhaust Butterfly Valve, Manual Butterfly Valve Manufacturer | Hebei Leading
March 13, 2024 by Brina
Manual Butterfly Valve
Butterfly valve are driven in a variety of ways: lever-operated, gear operated, pheumatic actuator, chain operator, electric actuator. Both lever operated butterfly valve & gear-operated butterfly valves are manual butterfly valve. Manual means butterfly valve are driven by hands. Compared with pheumatic actuator, electric actuator, manual butterfly valve is simple-structure.
Manual Operated Butterfly Valve Vs Pheumatic Actuator Butterfly Valve
1. Material (Similarity):
Body: Grey Cast Iron; Ductile Cast Iron, Stainless Steel 304/316; Carbon Steel.
Disc: Ductile Cast Iron(Nickel-plated or Nylon coated); Stainless Steel 304/316; Aluminum Bronze.
Stem: Stainless Steel 410/416/304/316.
Seat: EPDM; BUNA-N; PTFE; Viton; Hypalon; Neoprene; Metal Seated.
2. Pressure (Similarity):
CLASS 125/150; PN10/16/25; 5K/10K/16K.
3. Range of Applications (Similarity):
API 609; BS5155; MSS SP-67/68; EN593
4. Installation (Similarity):
1), Space out the flanges in order that the valve can pass easily. The disc is in half-opened position
2)Do not fit gaskets between the flanges
3)With disc in half-opened position put all the bolts. Do not tight the nuts.
4)Open totally the valve to verify that the pipeline is lined up in the correct way. Tighten the nuts.
