|Parts||Materials||Max.Pressure or Temperature|
|Body & Covers||304 Stainless Steel||-112°F to 797°F|
|316 Stainless Steel||-320.8°F to 1202°F|
|316L Stainless Steel||-320.8°F to 1472°F|
|Windows||Tempered Soda Lime Glass||235psig@212°F|
|Tempered Borosilicate Glass||290psig@248°F|
|Tempered Quartz Glass||362psig@392°F|
|Sealing Gaskets||NBR||-4°F to 248°F|
|Viton||-13°F to 400°F|
|PTFE(Teflon)||-40°F to 500°F|
|Flange Standard||ANSI 150Lb/300Lb/DIN/JIS 5K/10K/Ghost/GB|
Read The Latest Company News And Events Of Stv Valve Technology Group CO., LTD, You Will Stay Informed About Stv Valve Technology Group CO., LTD Export Information And Newly Released Products.
PN, Class, K, bar are all units of pressure rating to express the nominal pressure rating for pipelines, valves, flanges, pipe fittings or fittings. The difference is that the pressure they represent corresponds to different reference temperatures. PN refers to the corresponding pressure at 120℃, while CLass refers to the corresponding pressure at 425.5℃. Therefore, the temperature should be taken into account in pressure conversion.
PN is mostly used in European standard systems such as DIN, EN, BS, ISO and Chinese standard system GB. Generally, the number behind “PN” is an integer number denoting pressure classes, approximately equivalent to normal temperature pressure Mpa. For valves with carbon steel bodies, PN refers to the maximum allowable working pressure when applied below 200℃; For cast iron body, it was maximum allowable working pressure when applied below 120℃; For stainless steel valve body, it was maximum allowable working pressure for service below 250℃. When operating temperature increases, meanwhile the valve body pressure decreases. Commonly used PN pressure range is (unit of Bar): PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100, PN160, PN250, PN320, PN400.
Class is the common valve pressure rating unit of the American system, such as Class150 or 150LB and 150#, which all belong to the American standard pressure rating, representing the pressure range of pipeline or valve. Class is the calculation result of the binding temperature and pressure of a certain metal according to ANSI B16.34 standard. The main reason pound classes do not correspond to nominal pressures is that their temperature benchmarks are different. The pressure of a gas is referred to as a “psi” or “Pounds per square inch”.
Japan mainly use the unit of K to indicate the pressure level. There is no strict correspondence between nominal pressure and pressure grade due to their different temperature reference. The approximate conversion between them is shown in the table below.
We delivered high quality, F51 Forged Globe Valve to one of brazil customers.
Name: Globe Valve.
Material: Forged Duplex Stainless Steel ASTM A182-F51.
Pressure: Class 1500.
Port: Reduced Port.
Connection: Flange End.
- Shell material: Carbon steel or stainless steel 201/304/316
- Filter material: stainless steel
- Sealing material: NBR, VITON
- DN: 25-600mm
- Pressure: 1.0Mpa-420MPA
- Filter accuracy: 10-300mesh
- BS EN 1092-2(PN10, PN16), DIN 2501, BS 10 Table D/E
2PCS 6″ 304 Basket Strainer. CF8 Stainless Body & 316L Screen with PTFE Gasket ready for customer collection today.
Material: Carbon Steel, Alloy Steel, Stainless Steel
Grade: Stud bolt: ASTM A193 Gr.B7, B7M, B16; Nut:ASTM A194 2, 2H, 4, 7, 7M,8, 8M;
Finish: Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G.
Stv Valve has just delivered a batch of hot-dip galvanized bolts to Vietnamese customers, with the quantity of 2000, 3 / 4 “* 150mm
We finished and delivered Ansi 150, Carbon Steel Y Strainer
Purchase Order Number: STV20191005
Requested the valve inside & outside to be done painting
Available in PN16/40 or ANSI 150lb flanged,JIS Flange
sizes: 1/2″ to 24″
Temperature range: -29 to 560°C .
Pressure rating: DIN PN16-PN40 or ANSI 150LB-1500LB,JIS10K-30K
Body Material,WCB,CF8,CF8M,WC6 AND WC9 Etc.
Body: ASTM A216 WCB
GASKET: 304 + Graphite
Stud/Nut: A193 B7 / A194 2H
Connection: RF acc. to ASME B16.5
Size: 4 Inch
Class: 150 LB
Qty: 60 PCS
Surface:PTFE FluoroCarbon Xylan Coated
Whitford Quality Approved Coater Xylan 1424 Coated Stud Bolt, Xylan Coated Bolts, PTFE Fluorocarbon Coated A193 B7 Stud Bolt &A194 2H NUTS
Fluorcarbon coating-Surface Coatings XYLAN 1070. XYLAN 1024.
Length:20mm~6000mm(usually 12 feet)
Material: ASTM A193 B7.
Surface finished: PTFE Xylan Coated.
Standard: ANSI B18.1.1.
Xylan coating because of its reputation in the Oil and Gas Industry as one of the premium coating providers for bolts and nuts. As a Qualified Approved Coater, our PTFE coated bolts and nuts have been used in various countries in South America,southeast Asia.Middle east.
Xylan coatings have a broad range of properties which make them ideal for a variety of applications. Xylan differs from traditional Fluoropolymer coatings in one very important aspect … they are composite materials. Lubricants with the lowest-known coefficient of friction are combined with the newest high temperature resistant organic polymers to create Xylan coatings. Together these ingredients form “plastic alloys” with unique properties.
We delivered a Big Size Swing Check valves to one of European customers.
ASTM A351 CF8 304 Stainless Steel Body, Cover and Disc.
304 Stainless Steel Trim.
PTFE Cover Seal. Bolted Cover Design.
Face to Face dimensions in accordance with ANSI B16.10
Class 300 pressure rated. -20 / +200 deg C Temp rated.
Flanged ANSI 300 end connections.
Size:3″Painting: Inside and outside not painted.
Bolts and nuts between the body and bonnet and also the gland nuts and gland eye bolts made of steel A193-B8/A194-8
Stem packing graphite.
10PCS 10″ 600LB Flanged 316L (CF3) Gate Valves, 316L Trim, Lever Op and 20pcs 8″ 150LB 316 Ball Valves with Worm Gear
Get in touch and give us your valve challenge.
Cost Effective and quick solutions.
Forged steel gate valve is mainly used to cut off or connect the medium in the pipeline, not for regulating or throttling. According to different methods, gate valve can be divided into parallel gate valve, wedge gate valve, lifting gate valve, rotary rod gate valve, quick opening and closing gate valve, necking gate valve, flat gate valve, etc.
- The installation position, height, inlet and outlet direction shall meet the design requirements, and the connection shall be firm and tight.
- The handle of all kinds of manual valves for installation of thermal insulation pipeline shall not be downward.
- Visual inspection shall be carried out before the installation of the valve. The nameplate of the valve shall comply with the provisions of the current national standard “general valve mark” GB 12220.
- The gate valve with transmission mechanism shall be installed according to the product instructions.
- The hand wheel, handle and transmission mechanism are not allowed to be used for lifting and collision is strictly prohibite
Stv Valve Technology Group Co.,limited is the Forged Steel Valve professional Manufacture.
Valve Manufacturer from year 2003
- Add: 88# ,Jifeng Road,Wenzhou City, Zhejiang Province,325025
- Tel: +8615157766245