|
| |
| Multi Spring Seal |
| Type VT- 9 / VT - 9W are multi spring, pusher type unbalanced seals used for universal applications. The seals are compact in design suiting all types of rotating equipments, pumps and mixers. Drive lugs in the retainer will provide torque transmission and reduce slippage on shaft and sleeve. A snap ring holds all components together, helping in easy installation. The parts are interchangeable, VT- 9 can be converted to VT - 9W by just changing the seal ring and the secondary member. |
| |
| Seal Characteristics |
- Single Seal
- unbalanced
- Independent of directions of rotation
|
| |
| Application |
- General Chemicals
- Petrochemicals · Refineries
- Light hydrocarbons, Water
|
| |
| Performance Range |
| Shaft Diameter |
dl |
: |
18...100mm |
| Pressure |
p |
: |
10 bar (max) |
| Temperature |
t |
: |
-20...2200C |
| Velocity |
v |
: |
20 m/sec |
|
| |
| Materials |
| Seal Faces |
: |
Carbon, Ceramic, SiC, Tung. Carbide |
| Metal Parts |
: |
SS316, SS304, Hastelloy-C, Alloy 20 |
| O-rings |
: |
Elastomers (VT- 9)
PTFE Wedge (VT - 9W) |
|
|
|
|
|
|
| Single Coil Spring Seal |
| Type VSS -SPL is single coil spring seal developed for light contamination, dirty media and clogging type application. This type also allows it to fit onto a normal shaft without any balancing step. The mechanical drive of this seal is realised by grub screw which lock onto the shaft. The seal has a limited axial length, compact shape which allows easy mounting. |
| |
| Seal Characteristics |
- Single Seal
- Unbalanced
- Helical Coil spring
- Independent of direction of rotation
|
| |
| Application |
- General Chemicals
- Petrochemicals
- Light Hydrocarbons
|
| |
| Performance Range |
| Shaft Diameter |
dl |
: |
10...100mm |
| Pressure |
p |
: |
10 bar |
| Temperature |
t |
: |
-20...1800C |
| Velocity |
v |
: |
15 m/sec |
|
| |
| Materials |
| Seal Faces |
: |
Carbon, Ceramic, SiC, Tung. Carbide |
| Metal Parts |
: |
SS304, SS316, Special Alloy |
| O-rings |
: |
PTFE / Viton |
|
|
|
|
|
|
| Metal Bellow Seal |
| Type VMB - 50G seals specially designed for high temperature application and suitable for high start-up toque since the bellows unit is independent of torque transmission. Grafoil is used as a secondary member having excellent temperature range upto 4000C. Shrunk fit seal face design minimize face distortion restricting leakage and wear rate to very low level under a wide range of condition. |
| |
| Seal Characteristics |
- Single Seal
- Balanced
- Metal Bellows
- Independent of directions of rotation
|
| |
| Application |
- High temperature applications
- Petrochemicals
- Refineries
|
| |
| Performance Range |
| Shaft Diameter |
dl |
: |
18...100mm |
| Pressure |
p |
: |
20 bar (max) |
| Temperature |
t |
: |
-20...4000C |
| Velocity |
v |
: |
20m/sec |
|
| |
| Materials |
| Seal Faces |
: |
Carbon, SiC, Tung. Carbide |
| Metal Parts |
: |
SS316, SS304, Carpenter-42, Alloy 20, Hastelloy-C |
| O-rings |
: |
Grafoil |
|
|
|
|
|
|
| P.T.F.E. Bellow Seal |
| Seal faces are replaceable and can be supplied with hard materials suitable for abrasive services. |
| |
| Seal Characteristics |
- Single Seal
- Outside Mounted
- Independent of direction of rotation
|
| |
| Application |
- Extremely Corrosive application
|
| |
| Performance Range |
| Shaft Diameter |
dl |
: |
18...100mm |
| Pressure |
p |
: |
6bar(max) |
| Temperature |
t |
: |
-45...1200C |
| Velocity |
v |
: |
20 m/sec |
|
| |
| Materials |
| Seal Faces |
: |
GFT, SiC, Ceramic |
| Metal Parts |
: |
SS304, SS316, Hast-C |
| O-rings |
: |
PTFE Bellow |
|
|
|
|
|
|
| High Pressure Seal |
| Type VC - 108B mechanical seals are designed for heavy duty service involving high pressure and sliding velocities. This seal has positive drive arrangement and sturdy construction making the seal suitable for high pressure application. Multiple spring design provides uniform face loading. The seal is supplied as a cartridge unit and can be directly bolted to stuffing box. These seals are normally used in main oil pipelines, water injection pumps and boiler feed water pumps. |
| |
| Seal Characteristics |
- Single Seal
- Balanced
- Independent of direction of rotation
|
| |
| Application |
- Main Oil Pipeline
- Water Injection Pumps
- Boiler Feed Water Pumps
|
| |
| Performance Range |
| Shaft Diameter |
dl |
: |
25...150mm |
| Pressure |
p |
: |
80 bar (max) |
| Temperature |
t |
: |
-20...2200C |
| Velocity |
v |
: |
-20m/sec |
|
| |
| Materials |
| Seal Faces |
: |
Carbon, SiC, Tung.- Carbide |
| Metal Parts |
: |
SS316, SS304, Hastelloy-C, Alloy 20 |
| O-rings |
: |
Elastomers |
|
|
|
|
|
|
| Slurry Seal |
| Type VMH - 21 is a compact cartridgised balanced seal specially developed for handling slurries, sludges, thick syrups and polymerising fluids. In the cartridge construction the springs are isolated from the fluid enhancing the seal life. After detaching of the location plates provided, the seal can be easily installed straight away without setting measurements. Series 50B is a sturdy robust, seal capable of maintenance free runs for years together. |
| |
| Seal Characteristics |
- Single Seal
- Balanced
- Independent on direction of rotation
- Cartridge Unit
|
| |
| Application |
- Pulp & Paper
- Slurry Pumps
- Sludge Pumps
|
| |
| Performance Range |
| Shaft Diameter |
dl |
: |
20...100mm |
| Pressure |
p |
: |
18 bar (max) |
| Temperature |
t |
: |
-20...180°C |
| Velocity |
v |
: |
20 m/sec |
|
| |
| Series 51OB-D |
| Double seal arrangement forslurry application. |
| |
| Materials |
| Seal Faces |
: |
Carbon, SiC, Tung. Carbide |
| Metal Parts |
: |
SS316, SS304, Hastelloy-C, Alloy 20 |
| O-rings |
: |
Elastomers |
|
|
|
|
|
|
| Rubber Bellow Seal |
| Type VS - 2 is unbalanced single acting helical coil spring seals independent o1 direction of rotation. The drive ring's notch design eliminates over stressing of the elastomer bellows. Slippages are eliminated, protecting the shaft and sleeve from fretting. Seal can be repaired in field with minimum spares, minimizing the downtime cost. |
| |
| Seal Characteristics |
- Single Seal
- Unbalanced
- Conical spring
- Independent of direction of rotation
|
| |
| Application |
- Water pumps,Oil pumps
- Blowers
- Compressors
- Slurry pumps
|
| |
| Performance Range |
| Shaft Diameter |
dl |
: |
10...100 mm |
| Pressure |
p |
: |
22 bar (max |
| Temperature |
t |
: |
-20...1400C |
| Velocity |
v |
: |
15 m/sec |
|
| |
| Materials |
| Seal Faces |
: |
Carbon, Ceramic, SiC, Tung. Carbide |
| Metal Parts |
: |
SS304, SS316 |
| Bellows |
: |
Viton, Nitrile |
|
|
|
|
|
|
| Conical Spring Seals |
| Type VBSM - 3 is single conical spring, unbalanced seal with O-ring provided for secondary sealing. Since the Torque transmission is done by the single coil springs the seals are dependent on the directions of rotation, which is seen from the drive end of the shaft. Right handed spring and left handed springs are provided for clockwise and anticlockwise rotating shafts respectively. These seals can carry a variety of seals faces, serving application in submersible, sewage, chemical transfer, water pumps etc. |
| |
| Seal Characteristics |
- Single Seal
- Unbalanced
- Conical spring
- Dependent on directions of rotation
|
| |
| Application |
- Water pumps
- Submersible pump
- Sewage pump
|
| |
| Performance Range |
| Shaft Diameter |
dl |
: |
10...100mm |
| Pressure |
p |
: |
10 bar (max) |
| Temperature |
t |
: |
-20...1800C |
| Velocity |
v |
: |
10 m/sec |
|
| |
| Materials |
| Seal Faces |
: |
Carbon, Ceramic, SiC, Tung. Carbide |
| Metal Parts |
: |
SS304, SS316 |
| O-rings |
: |
Elastomers, TTV |
|
|
|
|
|
|
| Capsulated Spring Seal |
| Type VTC - 12 is the balanced seal without need for step sleeve. This seals are designed for media containing solids or with high viscosity. The springs are protected from media, thus no clogging of springs or springs compartment, resulting in high reliability. |
| |
| Seal Characteristics |
- Single Seal
- Balanced
- Capsulated Spring
- Independent of direction of rotation
|
| |
| Application |
- General Chemicals
- Food Industries
- Media Containing Solids
|
| |
| Performance Range |
| Shaft Diameter |
dl |
: |
18...100mm |
| Pressure |
p |
: |
25 bar (max) |
| Temperature |
t |
: |
-20...1400C |
| Velocity |
v |
: |
15 m/sec |
|
| |
| Materials |
| Seal Faces |
: |
Carbon, SiC, Tung. Carbide |
| Metal Parts |
: |
SS304, SS316, Hastelloy-C, Alloy 20 |
| O-rings |
: |
Viton, Nitrile |
|
|
|
|
|
|
| Agitator Seal |
| Type VCB - SH/C1 are preset factory assembled cartridge seals for use in Agitators, Mixers and Reactor Vessels. The seal construction varies slightly for top entry vessels, side entry vessels and bottom entry vessels. The seals are designed to the shortest shaft length and the bearings are located as close to the vessel body to minimize the deflection. |
| |
| Seal Characteristics |
- Single Seal / Double Seal
- Unbalanced / Balanced
- Independent on direction of rotation
|
| |
| Application |
- General Chemicals and its vapours.
- Petrochemicals and its vapours.
- Light Hydrocarbons and its vapours.
|
| |
| Performance Range |
| Shaft Diameter |
dl |
: |
25...150mm |
| Pressure |
p |
: |
vaccum 40 bar (max) |
| Temperature |
t |
: |
-20...220°C |
| Velocity |
v |
: |
4 m/sec |
|
| |
| Materials |
| Seal Faces |
: |
Carbon, SiC, Tung, Ceramic |
| Metal Parts |
: |
SS316, Hastelloy-C Alloy 20 |
| O-rings |
: |
Elastomers, PTFE |
|
|
|
|
|
|
| Thermosyphon |
With Velmake's Thermosyphon system it is possible to supply barrier fluid to double seal arrangement. The pressure of barrier fluid is higher than the pressure of the fluid being sealed. Thus seal faces remain in contact with each other and sealing area temperature is controlled. Thermosyphon system is as per API 682.
|
|
|
|
|
| Cyclone Separator |
Cyclone Separator are designed for removing dirt, sand and solid particles from injection flow to mechanical seal. The separation is obtained by centrifugal force generated by differential pressure across the cyclone.
| Size |
: |
1/2"NPT/1/2"BSP |
| Pressure |
: |
120 bar |
| Temperature |
: |
2000C |
|
|
|
|
|
| Heat Exchanger |
Velmake Heat Exchangers are incorporated in API Plans 21,23,41 to bring down the temperature of buffer fluid before it enters into seal chamber. Heat Exchanger may be mounted either vertically or horizontally, the vertical mounting being preferred because of better thermosyphon effects.
|
|
|
|
|
|
|
|
|
