We – EPG Group the bigge EPT Chain and agricultural gearbox factory in China with 5 different branches. For more details: Mobile/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828
Flanged Gate Valve
Material: WCB, WC6, WC9, CF8, A105, AISI 4130, Duplex SS
Face to face: ANSI16.10 API standard
Designed and Tested in Accordance to: API-6A, API 6D, ANSI, JIS, DIN, GB, etc
Rising Stem Gate Valve
Designed and Tested in Accordance to API-6A
Factory pressure te EPT accordance to API-6D or API-6A. Sour service mode EPT to NACE MR-01-75.
Low alloy steel or stainless steel valve body & bonnet.
Available in working pressure from 2, 000 to 5, 000psi and flange size from 2″ to 5″.
Offer with thread, weld and flanged end connection.
Replacement and repair of valve core is conveniently.
Valve volume and weight is less than EPT gate valve
Design of Disc
Gate vlaves with NPS>2 are of flexible wedge gate; Gate valves with NPS <2 are of solid wedge gate.
Body and Bonnet Connection
The body and bonnet of Class 150~Class 900 gate valves are usually bolted bonnet design. And Class 1500~Class 2500 gate valves are usually of pressurized seal design.
Gasket of Cover Flange
Carbon steel or stainless steel+flexible graphite combined gasket is used for Class 150 gate valve; Stainless steel+flexible graphite wounded gasket is used for Class 300 gate valve; Stainless steel+flexible graphite wounded gasket is used for Class 600 gate valve, and ring joint gasket is also optional for Class 600 gate valve; Ring Joint gasket is used for Class 900 gate valve; Pressurized seal design is used for Class 1500~Class 2500 gate valve.
Hand wheel or gear box is usually used for gate valve actuation. Chain wheel and electric actuator can be also used for gate valve actuatuo if being requested by the customers.
Molded flexible graphite is used for packing material. PTFE or combined packing material can be also used if being requested by the customers. The internal surface of the stuffing box, of which area is contacted with the packing, is of excellent finish(Ra 3.2um). The stem surface, contacting with the packing, should be rolled and pressed after being precisely machined, so as to reach to the high finish and compactness(Ra 0.8um)and ensure the reliable tightness of the stem area.
Belleville Spring Loaded Packing Impacting System
If being requested by the customer, the Belleville spring loaded packing impacting system can be adopted for enhancing the durability and reliablity of the packing seal.
Back Seating Design
All our gate valves have the back seating design. In mo EPT cases, the carbon steel gate valve is fitted with a renewable back seat. For stainless steel gate valve, the back seat is machined directly in the bonnet or is machined after welding. When the gate valve is at fully open position, the sealing of the back seat can be very reliable. However, as per the requirement of API600, it is not advisable to add or change packing by the mean of back seating when the valve is pressure containing.
For carbon steel gate valve, the seat is usually forged steel. The sealing surface of the seat is spray welded with hard alloy specified by the customer. Welded seat is used for NPS<10 gate valves, and welded on seat can be also optional if being requested by the customer. Welded on seat is used for NPS<10 carbon steel gate valves. For Stainless steel gate valve, intergral seat is usually adopted, or to weld hard alloy directly integrally. Threaded or welded on seat is also optional for stainless steel gate valve if being requested by the customer.
The stem is of integral forged design. The minimum diameter of the stem shall per the standard requirement. The connection of the stem and disc is T type. The strength of the connecting area is bigger than that of the T threaded part of the stem. The strength te EPT if that area conforms to API 591.
|ITEM||P EPT NAME||MATERIAL|
|1||Body||ASTM A216 GR.WCB|
|2||Seat Ring||ASTM A105 + Stellite Faced|
|3||Disc||ASTM A216 GR.WCB+13 EPT Faced|
|4||Stem||ASTM A182 GR.F6|
|5||Gasket||Soft Iron + Graphite|
|6||Bonnet||ASTM A216 GR.WCB|
|7||Bonnet Bolt Nuts||ASTM A194 GR.2H|
|8||Bonnet Bolts||ASTM A193 GR.B7|
|9||Backseat Bushing||ASTM A276 Type 410|
|10||Stem Packing||Braided Graphite & Die Formed Graphite Ring|
|11||Eye Bolt Pins||Die formed Graphite Ring Carbon Steel|
|12||Gland Eye Bolts||ASTM A307 GR.B|
|13||Gland||ASTM A276 Type 410|
|14||Gland Flange||ASTM A216 GR.WCB|
|15||Eye Bolt Nuts||ASTM A194 GR.2H|
|16||Grease Nipple||Carbon Steel|
|17||Stem Nut||ASTM A439 GR.D-2|
|18||Retaining Nut||Carbon Steel|
|19||Hand wheel||Ductile Iron|
|20||Hand wheel Nut||Carbon Steel|
|22||Yoke||ASTM A216 GR.WCB|
|23||Yoke Pan Bolt Nuts||ASTM A194 GR.2H|
|24||Yoke Pan Bolts||ASTM A193 GR.B7|
Ca EPT steel gate valve-Class 150 dimensions & weights
|Size||L||L 1||L2||H||W||Weight RF|
The use of original equipment manufacturer’s (OEM) part numbers or trademarks , e.g. CASE® and John Deere® are for reference purposes only and for indicating product use and compatibility. Our company and the listed replacement parts contained herein are not sponsored, approved, or manufactured by the OEM.