eleng posted an update 1 week ago
PRIMATHERM forged steel globe valve means the disc moves along with central line of seat.According to this kind of move type,the diameter change of seat will be direct ratio from the disc route.It has short route when disc close,open and close in short time,and little height of valve.The diameter of seat turns bigger when flap moves higher and smaller when flap lower.
This globe valve were designed with Nord-Lock gasket,stainless steel bolt at customer’s requirement.Forged steel globe valve in the pipeline system is used to close or open line, maintain normal operation of system
Its selection principle is:
1, It’s better for the high temperature and high pressure medium or device appropriate such as power plants, nuclear power stations, petrochemical system of high temperature and high pressure piping.
2, It’s better for the pipeline which has little strict for the flow resistance.
Thinking about small place of pressure loss.
3, For the small valve we can choose needle valve, instrument valve, the sampling valve, pressure gauge valve, etc.
4, It’s better for the pipeline which has flow control or pressure adjustment, but the adjustment accuracy is not high, and pipe diameter and the relatively small, such as nominal diameter of 50 mm or less piping, appropriate chooses.
5, Synthetic fertilizer and chemical fertilizer in the industrial production appropriate chooses 16 mpa or PN320 PN160 nominal pressure, nominal pressure, nominal pressure of 32 mpa pressure Angle globe valve or high pressure Angle throttle valves.
6, Desilication in bayer process of alumina production workshop, easy to coking on the pipeline, easy to choose seat can be separated type, body place, carbide seal once-through cut-off valve or once-through throttle valve.
7, On the water supply, heating, urban construction engineering, nominal menstruation smaller pipe, can be used as, balancing valve or plunger valve, such as nominal drift diameter less than 150 mm  on the pipeline.
The most obvious advantage is that in the process of opening and closing, due to the friction between the disc in the valve ,sealing surface is smaller than gate valves, and wear resistance.Open altitude generally only a quarter of the seat channel diameter, so much smaller than gate valves.Typically on the valve body and disc only one sealing surface, thus making craft is good, easy to maintenance.
Applicable temperature: 196 ℃ ~ 700 ℃
Drive mode: manual, bevel gear drive, pneumatic, electric, hydraulic, pneumatic, hydraulic linkage, electro-hydraulic
Material: body material WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8 (304), CF3 (304 l), CF8M (316), CF3M, Ti (316 l).
Choose different material, can be respectively suitable for water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea, and other media
(1) simple structure than gate valves, manufacturing and maintenance are convenient.
(2) the sealing surface is not easy to wear and abrasion, good sealing, open/close when there is no relative sliding between the disc and body sealing surface, thus wear and scratches are not serious, good sealing performance, long service life.
(3) the opening and closing, the valve stroke is small, so stop valve height is smaller than gate valves, but the structure length is longer than gate valves.
(4) the open-close torque, opening and closing is arduous, opening and closing time of the principal.
(5) the fluid resistance is big, because the body medium channel is more twists and turns, fluid resistance is big, big power consumption.
(6) nominal pressure medium flow direction PN 16 mpa, or less commonly used downstream, medium from upper disc under direction;
Nominal pressure PN acuity 20 mpa, generally USES the countercurrent, medium direction downstream from the disc.
In order to increase the seals can.
When using, cut-off valve medium can only single direction, can’t change the direction of flow.
(7) open when the disc is often affected by erosion.
Commonly used globe valve with national standard globe valve, cut-off valve, American standard German standard globe valve, the cut-off valve, corrugated pipe cut-off valve, cut-off valve in low temperature.Forged steel globe valve attention to the problem of valve in the switch position.Generally ball valve maintenance in an open state, under special circumstances to choose shut down maintenance.Other valves are not all in open position.Forged steel globe valves must be closed during maintenance, to ensure the sealing ring is full of grease seal grooves, if open, sealing grease directly off the inflow, or valve cavity, wasteful.Valve greasing, often ignore the fat injection effect problem.
Greasing operation pressure, fat injection rate, switch is normal.But in order to ensure the valve grease injection effect, and sometimes need to open or close the valve, check the lubrication effect, confirm the valve ball or disc surface lubrication even
Part NameASTM Material
Carbon SteelCarbon SteelStainless Steel
DiscA276 420A276 420A276 304
StemA182 F6AA182 F6AA276 304
Seat ringA276 410A276 410A276 304
Stem back seatA276 410A276 410A276 304
Bonnet Stud NutA193 B7L7A193 B8
GlandA276 410A276 410A276 304
Gland flangeA105LF2A276 304
Eyebolt PinA307-AA307-AA276 304
EyeboltCarbon SteelCarbon SteelCarbon Steel
Eyebolt NutA194 2H7A194 8
Yoke SleeveA276 410A276 410A276 304
HandwheelASTM A197ASTM A197ASTM A197
Handwheel NutCarbon SteelCarbon SteelCarbon Steel
PackagingPlywood Case Seaworthy Package
Operation AvailableLever,Gear,Pneumatic,Motorized etc
FeatureBB/WB/PSB bonnet,OS&Y,NACE MR01-75 standard
Design StandardAPI602,ASME B16.34
Fire SafetyAPI 607
Test StandardAPI 598,API 6D
1.Q:Do you make “OEM”?
A:Yes we do.However if the customer could accept the manufacturer’s logo casted on the products,we’ll make another 2% discount based on our order price negotiated.
2.Q:Do you accept agent sales model?
A:Yes.In order to expand our business well,all the customers will be welcome to be our agent.We’ll support the customer at good price,good quality,good delivery time and all the technology requirement.
3.Q:Can i have my own customized product?
A:Sure.We could accept the customized requirements for the color,package,shipping mark etc.
4.Q:How many employees in your company?
A:There’re totally 43 employees in our company,including 35 workers,3 engineers,5 sales people.Globe Valve suppliers