| Application of a system of valve reference designation allows fixing some of the main technical parameters of the product in brief terms. Application of a system of indexes provides for a possibility of correct choice of valves, their proper use and increase of valve controllability during mounting. The most widespread is the system of TsKBA (Central Fittings Design-Engineering Bureau) featuring numerical and letter code of the valves main data (Table-Figure). According to the TsKBA system a product code includes 5 elements placed one after another (if there is no actuator, the code consists of four elements).
The first two digits indicate the valve type (Table 1), the next letters – the body material (Table 2), one or two digits after the letters – model number (design features of the product), if there are three digits: the first one indicates the actuator type (Table 3), and the next two ones mean the model number; the last letters stand for the material of sealing surfaces (Table 4) or the method of the body internal coating application (Table 5).
In some cases a digit indicating the version of the product or the fact of it being made of another material is added after the letters indicating the sealing surfaces material. Products without insertion or built-up rings, which is with sealing surfaces made directly on the body or the gate, are designated with letters «бк» (without rings).
For example:
15с922нж Steel shutoff straightway flange valve with electric actuator
15 – according to Table 1 – shutoff valve
с – according to Table 2 – from carbon steel
9 – according to Table 3 – with electric actuator
22 – number of model
нж – according to Table 4 – sealing surfaces built-up with corrosion-resistant steel.
For valves with electric actuators of explosion-proof version letter Б should be added at the end of the reference designation (for example, 30ч906брБ), for tropical version – letter Т (for example, 30ч906брТ). The letters Б and Т should be specified at ordering.
Along with the TsKBA system a code obtained by abbreviation of the product name is used, for example, КТС – three-way steel cock etc. Certain constructions are designated only with the number of drawing used for production thereof. Sometimes the designation includes a letter indicating the plant manufacturing the valves.
Reference designations for the valves intended for oil-refining and oil-producing industries consist of letters and digits. The letters indicate the valve type, digits following the letters show parameters of the product, for example, ЗКЛ-200-16 means molded wedge gate valve with the port area of 200 мм and for the nominal pressure of 16 kgf/sq.cm. or КП-160 is feed valve for the nominal pressure of 160 kgf/sq.cm. Products not having reference designation are marked with the drawing number.
Nowadays there are many new reference designations for valves, and they cannot be systematized. These designations are indicated in the form they were adopted in by the manufacturing plant (or the introducer).
Table 1
Valve type
| Reference designation
| Cock (draw)
| 10
| Cock (for pipeline)
| 11
| Locking device of level gage
| 12
| Shutoff valve
| 13, 14, 15
| Cutoff valve
| 22, 24
| Check valve (back-pressure or intake with grid)
| 16
| Safety valve
| 17
| Check gate (check rotary valve),
| | Hermetic valve
| 19
| Bypass valve
| 20
| Pressure regulator
| 18, 21
| Distribution valve
| 23
| Control valve
| 25, 26
| Mixing valve
| 27
| Flap
| 30, 31
| Disk rotary gate
| 32
| Hose flap
| 33
| Elevator
| 40
| Condensate-tapper
| 45
|
Table 2
Body material
| Reference designation
| Carbon steel
| c
| Alloy steel
| лc
| Corrosion-resistant (stainless) steel
| нж
| Grey cast iron
| ч
| Malleable cast iron
| Кч
| High-duty cast iron
| вч
| Brass, bronze
| б
| Aluminium
| а
| Monel metal
| мн
| Plastics (except viniplast)
| п
| Viniplast
| вп
| Porcelain
| к
| Titanium alloy
| тн
| Glass
| cк
|
Table 3
Actuator
| Reference designation
| For remote control
| 0
| Mechanic with worm gearing
| 3
| The same with cylindrical gearing
| 4
| The same with bevel gearing
| 5
| Pneumatic
| 6
| Hydraulic
| 7
| Pneumohydraulic
| 6 (7)
| Electromagnetic
| 8
| Electric
| 9
|
Table 4
Sealing surfaces material
| Reference designation
| Brass, bronze
| бр
| Monel metal
| мн
| Corrosion-resistant (stainless) steel
| нж
| Nitrated steel
| нт
| Babbit
| бт
| Stellite
| ст
| Sormite
| ср
| Leather
| к
| Ebonite
| э
| Rubber
| р
| Plastics (except viniplast)
| п
| Viniplast
| вп
| Fluoropolastic
| фт
|
Table 5
Method of internal coating
| Reference designation
| Rubberizing
| гм
| Enamelling
| эм
| Leading
| св
| Lining with plastic
| п
| Lining with Nairit
| н
|
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