RV series V ball valve
It is a kind of advanced control valve with right angle rotation.
It is mainly used as a regulating valve or as an on-off valve. The
v-type spool is designed with a special shape of the v-notch, so it
has a large shearing force and self-cleaning function, especially
suitable for the control of media containing fibers or tiny solid
particles. Therefore, this product is widely used in the chemical,
biochemical, petroleum, polysilicon, chemical fiber,
pharmaceutical, environmental, paper and other industrial sectors
of the automatic control system.
Design feature
Valve body
The valve body is designed in one piece to avoid leakage that may
occur in the middle flange connection.
Valve stem
The outer circle is made of coreless grinding, and the friction
coefficient between the filler and the packing is small. The valve
stem and the valve core are splined, which has good neutrality and
large bearing torque. The spline connection effectively eliminates
the matching clearance between the valve stem and the valve core,
and improves the adjustment precision of the valve.
Self-lubricating bearing
The upper and lower valve stems are fixed by self-lubricating
bearings, which have high rotation precision and good rotation
stability. Make the valve run smoother.
Sealing bonnet
The side-mounted sealing bonnet design makes valve maintenance more
convenient.
Spool
Designed with a V-shaped notch with a special shape, the valve has
an approximately equal percentage of flow characteristics. At the
same time, the shear force and friction between the valve core and
the sealing seat will be great during the movement, especially
suitable for applications where the medium is viscous, fiber and
solid particles are included. A small flow spool and noise
reduction spool are also available.
Vavle seat
The wave spring is pre-tightened, so that the sealing seat is
always in close contact with the valve core, and the sealing
performance is good, which can automatically compensate the wear of
the seal in long-term use.
Parts List
| Nunber | Name | Quantity(Piece) | Material |
| 1 | Valve body | 1 | WCB,CF8,CF8M |
| 2 | Spool | 1 | CF8,CF8M+Hard chromium plating or spray welding Stelle |
| 3 | Rear stem | 1 | 17-4PH SS316 |
| 4 | Cylindrical pin | 2 | SS304,SS316 |
| 5 | Front stem | 1 | 17-4PH, SS316 |
| 6 | Spline | 1 | 17-4PH ,SS316 |
| 7 | Flat key | 1 | SS304,45# |
| 8 | Rear gland | 1 | CF8,CF8M |
| 9 | O-ring | 1 | Fluororubber |
| 10 | Adjustment mats | 1 | PTFE |
| 11 | Self-lubricating bearing | 1 | Composite material |
| 12 | Self-lubricating bearing | 1 | Composite material |
| 13 | Packing | A group | PTFE |
| 14 | Packing gland | 1 | CF8 |
| 15 | O-ring | 1 | Fluororubber |
| 16 | Seal seat | 1 | SS304,SS316+Hard chromium plating or spray welding Stelle |
| 17 | Wave spring | 1 | 17-4PH ,X-750 |
| 18 | Seal seat cover | 1 | Q235,SS304,SS316 |
| 19 | Socket head cap screws | 4 | SS304 |
| 20 | Hexagon screw | 4 | SS304 |
| 21 | Double head screw | 2 | SS304 |
| 22 | Hex nuts | 2 | SS304 |
Technical Parameters
Nominal diameter
Clip type DN:20,25,32,40,50,65,80,100,125,150,200,250.
Flange type
DN:20,25,32,40,50,65,80,100,125,150,200,250,300,400,450,500,600,700.
Nominal pressure (PN): 1.0,1.6,2.5,4.0,6.4(Mpa)ASME150,300LB.
Temperature range: -40~120 (normal temperature); -40~230 (medium
temperature); -40~425 (high temperature)
Structural length standard:The clip type is according to the
manufacturer's standard.
Flange type according to ISA S75.04 and IEC/DIN 534-3-2 standards.
Pressure test:The shell test pressure is 1.5 times the nominal
pressure. The seal test is 1.1 times the nominal pressure. The test
medium is water.
Leakage: Metal-sealed seat media tested in the direction of the
arrow to meet Class F of the ISO5208 seal rating, equivalent to the
ANSI/FCI0.2IV x 1/100 standard. See the table below for details.
Maximum allowable leakage
| DN(mm) | Metal seat | Soft seat |
| 25 | 1.5ml/min | 0.15ml/min |
| 32 | 1.9ml/min | 0.19ml/min |
| 40 | 2.4ml/min | 0.24ml/min |
| 50 | 3.0ml/min | 0.30ml/min |
| 65 | 3.9ml/min | 0.39ml/min |
| 80 | 4.8ml/min | 0.48ml/min |
| 100 | 6.0ml/min | 0.60ml/min |
| 125 | 7.5ml/min | 0.75ml/min |
| 150 | 9.0ml/min | 0.90ml/min |
| 200 | 12.0ml/min | 1.20ml/min |
| 250 | 15.0ml/min | 1.50ml/min |
| 300 | 18.0ml/min | 1.80ml/min |
| 350 | 21.0ml/min | 2.10ml/min |
| 400 | 24.0ml/min | 2.40ml/min |
| 450 | 27.0ml/min | 2.70ml/min |
| 500 | 30.0ml/min | 3.00ml/min |
| 600 | 36.0ml/min | 3.60ml/min |
| 700 | 42.0ml/min | 4.20ml/min |
The inherent flow characteristics of the V-type regulator are equal
percentage characteristics as shown.
Valve rated CV value
| Nominal diameter | Rated CV | Nominal diameter | Rated CV |
| DN25 | 27 | DN200 | 1860 |
| DN32 | 47 | DN250 | 2900 |
| DN40 | 70 | DN300 | 4320 |
| DN50 | 135 | DN350 | 6640 |
| DN65 | 210 | DN400 | 8000 |
| DN80 | 390 | DN450 | 10000 |
| DN100 | 560 | DN500 | 12200 |
| DN125 | 790 | DN600 | 17270 |
| DN150 | 1130 | DN700 | 25000 |
Valve maximum allowable differential pressure and torque
| DN(mm) | Clip type | Flange type | Torque (N,M) |
| Maximum closing pressure difference | Maximum control pressure difference | Maximum closing pressure difference | Maximum control pressure difference | | |
| (bar) | (bar) | (bar) | (bar) | 16(bar) | 40(bar) |
| 25 | 50 | 35 | 40 | 35 | 25 | 48 |
| 32 | 50 | 35 | 40 | 35 | 25 | 55 |
| 40 | 50 | 35 | 40 | 35 | 30 | 60 |
| 50 | 50 | 35 | 40 | 35 | 35 | 70 |
| 65 | 50 | 35 | 40 | 35 | 60 | 140 |
| 80 | 50 | 35 | 40 | 35 | 80 | 224 |
| 100 | 40 | 25 | 40 | 25 | 140 | 315 |
| 125 | 40 | 25 | 40 | 25 | 160 | 480 |
| 150 | 40 | 25 | 40 | 25 | 220 | 930 |
| 200 | 35 | 25 | 40 | 25 | 350 | 1830 |
| 250 | 35 | 20 | 40 | 20 | 660 | 3125 |
| 300 | | | 40 | 20 | 1200 | 4000 |
| 350 | | | 40 | 20 | 1700 | 6120 |
| 400 | | | 40 | 20 | 2600 | 8030 |
| 450 | | | 40 | 20 | 3500 | 12000 |
| 500 | | | 30 | 10 | 3800 | 15000 |
| 600 | | | 30 | 10 | 6600 | 20500 |
Note: 1. The torque provided in the table is the torque at this
pressure, which is based on the torque of the metal seat at normal
temperature.
2. We recommend multiplying the safety factor by 1.3 times when
selecting the actuator. The valve torque will vary with the medium
and temperature.
Seat seal structure
Metal sealing seat Soft sealing seat High temperature metal sealing
seat
| No. | Item | Temperature℃ | No. | Item | Temperature℃ | No. | Item | Temperature℃ |
| 1 | Seal seat cover | -40℃~160℃ -40℃~230℃
| 1 | Seal seat cover | -40℃~160℃
| 1 | Seal seat cover | -40℃~425℃
|
| 2 | Wave spring | 2 | Wave spring | 2 | Wave spring |
| 3 | O-ring | 3 | O-ring | 3 | Pressure ring |
| 4 | Vavle body | 4 | Vavle body | 4 | Seal ring |
| 5 | Seal seat | 5 | Seal seat | 5 | Seal seat |
| 6 | Spool | 6 | Seal ring | 6 | Vavle body |
| | 7 | Spool | 7 | Spool |
Spool structure
Small flow spool
A wide range of small CV values are available for valves with a
nominal diameter of 20 mm or 25 mm for precise control of small
flows. It is ideal for control of some additives and coatings in
the paper industry.
Noise reduction spool
In control valve applications, there are limits to the control
valve noise in some cases. In practical applications, when some
special sections use conventional valves, it is easy to exceed the
standard, especially in gas and steam applications. Water and other
liquids will cavitation in high pressure differential environments,
damaging the piping system and will have a significant impact on
valve life and accuracy. This spool can be used to solve it.
Actuator mounting orientation
Pneumatic V-type ball valve with Z series actuator standard factory
direction as shown in Figure A. If there is an installation space
limit, you can choose another three orientations.
Application
Pulp and fiber control in the paper industry
Slurry control in the biochemical industry
Powder and hard particle fluid control
Various flow control and pressure control
