Villa Hot Tub,Sauna Hot Tub In Hotel,Holiday Hot Tub In Hotel,Acrylic Spa In Hotel SpaRelax Co., Ltd. , https://www.sparelaxoutdoorspa.com Serial Number | Name | Structure Characteristics | Applicable Design Standards 1 Upright Lift Check Valve 1. Flow Channel: Horizontal straight, angle, DC (Y type)
2. Connection between valve body and bonnet: Flange, external thread
3. Flange end: BS5352-1981, JB/T7749-1995, JPI-7S-36-1999
4. Valve flap: Ball (BS5352-1981), flat sealing plug, cone sealing plug BS5352-1987
JB/T7746-1995
JPI-7S-36-1999
MSS-SP-42-1995
BS1868-1991
BS5160-1989
GB/T12235-1989 2 Straight-through Lift Check Valve 1. Flow Channel: Vertical straight through
2. Connection between valve body and bonnet: Flange, external thread
3. Flange end: BS5352-1981, JB/T7749-1995, JPI-7S-36-1999
4. Valve flap: Ball (BS5352-1981), flat sealing plug, cone sealing plug BS5352-1981
BS1868-1991 3 Internal Pressure Self-tightening Seal 1. Flow path: Horizontal straight through
2. Connection between valve body and cover: Internal pressure self-tightening seal
3. Connection end: Flange, butt welding, socket welding
4. Valve flap: Cone seal plunger or flat seal plunger ASMEB16.34-1996
(pair welding, flange, connection)
BS5352-1981
(refer to socket) 4 With Lift Spring Lift Check Valve 1. Flow path: Angle
2. Connection between valve body and cover: Flange
3. Connection end: Flange, thread, socket welding
4. Valve flap: Ball, plane seal plunger, cone seal plunger BS1868-1991
BS5352-1981
JB/T7746-1995
JPI-7S-36-1999
ASMEB16.34-1996
BS5160-1989 5 Single Flap Bottom Valve 1. Flow channel: Vertical straight through
2. Connected with the pipe: Flange
3. Valve flap: Flat sealing plug shape (similar to plug-type lift check valve) BS5352-1987
JB/T7746-1995
JPI-7S-36-1999
MSS-SP-42-1995
BS1868-1991
BS5160-1989
GB/T12235-1989 6 Double Flap Rotary Bottom Valve The valve flap is a double-valve swing type, and the other principle is the same as that of the swing-type check valve. The principle of the large multi-lobed swing check valve is the same. Reference
API594-1991 7 Slow-closing Swing Check Valve 1. Flow path: Horizontal straight through
2. The connection between the valve body and the valve cover: Diameter ≤150, flat cover flange diameter ≥200, butterfly flange
3. Connection end: Flange, butt welding
4. The rocker is fixed: The rocker is out of the body, fixed on the valve cover (upper type), or fixed on the valve body (convex body in the valve body) but does not wear out of the body JISB2074-1991
GB/T12236-1989
ASMEB16.34-1996
MSS-SP-42-1995
API-6D-2002
BS1868-1991
JPI-7S-46-1999
API594-1991 8 Internal Pressure Self-tightening Rotary Check Valve 1. Flow path: Horizontal straight through
2. Valve body and valve cover connection: Internal pressure self-tightening seal
3. Connection end: Flange, butt welding
4. The rocker is fixed: The rocker is worn out of the body, and the rocker is fixed on the boss of the valve body, but does not wear out of the body ASMEB16.34-1996 9 Swing Check Valve with Buffer Mechanism Buffer mechanism: 1. Rotary type 2. Piston type 10 Butterfly Check Valve The internal structure and action principle are the same as those of the butterfly valve, and the rotating shaft supporting the valve flap is as safe as the swing check valve. 11 Swing Check Valve 1. Flow path: Straight-through
2. Valve body, bonnet connection: Bolted connection
3. Valve body, valve cover and valve disc are all steel castings.
4. Valve seat, valve sealing surface surfacing hard alloy GB/T12236-1989
API6D-2002 12 Counter-rotating Double-valve Check Valve 1. Flow path: Straight-through
2. Valve body: Cast steel
3. Valve flap: Double plate, after the spring is reset, it has a certain angle to the horizontal and is easy to close.
4. There are single valve stem and double valve stem JB/T8937-1999
API6D-2002 13 Single Ball Wear-free Ball Check Valve 1. Flow path: Straight-through
2. Valve body and valve cover are cast steel parts.
3. Valve body, bonnet connection: Bolted connection
4. The ball body has a spherical guiding device
5. The sphere is hollow steel coated rubber is easy to seal
6. Suitable for nominal diameter DN ≤ 150mm 14 Multi-ball Wear-free Ball Check Valve 1. Flow path: Straight-through
2. Valve body: Valve cover: Welded steel or steel plate welded
3. Valve body, bonnet connection: Bolted connection
4. The ball body has a spherical guiding device
5. The sphere is hollow steel coated rubber is easy to seal
6. Suitable for nominal diameter DN200~600mm 15 Flanged with Damping Butterfly Check Valve 1. Flow path: Straight-through
2. The valve body and the butterfly plate are cast steel parts.
3. The rotary shaft of the butterfly plate is located on the butterfly plate in the valve body with a damping pin.
4. The valve body is provided with a damping cylinder with a spring
5