Product Details: Pressure Seal Globe Valve
Pressure Seal Globe Valve -> Pressure Seal Globe Valve
Pressure seal bonnet is suggested for better closure in high pressure condition, while bolted bonnet is still available for customer's option.
The pressure seal design incorporates a metal-to-metal seal that becomes tighter as the pressure increases. The initial preload deforms the taper on the soft iron gasket to mate with the taper on the bonnet. The thin knife-edge on the gasket is wedged tightly between the body and the bonnet. The shallow angle insures that the gasket is sealed tightly with only a small upward force on the bonnet. Once the initial seal is created, the body/bonnet joint will remain leak free regardless of thermal or pressure conditions in the valve. After the joint has been assembled, there is no further need to adjust bonnet cap screws.
Applicable Standards of Pressure Seal Globe Valves:
A) Design&Manufacture: BS 1873, ASME B16.34
B) Face to Face: ASME B16.10, EN 558, BS2080
C) Connection End: ASME B16.5, ASME B16.25, EN 1092
D) Test and Inspection: API 598, EN 12266, BS 6755
Sizes: 1/2" - 12" or DN12 - DN300
Pressure Rating: Class150 - Class2500 or PN16 - PN420
Materials of Valve Body: WCB, LCB, WC6, WC9, C12, C5, CF8, CF3, CF3M, CF8M, etc.
Operated by: Handwheel, Gear, Pneumatic, hydraulic and Electric actuator.
The features of globe valve
Bolted Bonnet; Outside Screw and Yoke; Rising stems; Metallic seating surfaces.
Body and Bonnet Connection
The body and bonnet of Class150~Class900 globe valves are usually bolted bonnet design. And the Class1500~Class2500 globe valves are usually of pressurized seal design.
Gasket of Cover Flange
Stainless steel + flexible graphite wounded gasket is used for Class 150 and Class 300 globe valve. Stainless steel + flexible graphite wounded gasket is used for Class, and ring joint gasket is also optional for Class 600. Ring joint gasket is used for Class 900 globe valve. Pressurized seal design is used for Class 1500~Class 2500 globe valve.
Actuation
Hand wheel, impact hand wheel and gear box is usually used for globle valve actuation. Chain wheel and electric acduator can be also used for globle valve actuation if being reguested by the customers.
Belleville spring loaded packing impacting system
If being requested by the customer, the Belleville spring loaded packing impacting can be adopted for enhancing the durability and reliability of the packing seal.
Seat
For carbon steek globe valve, the seat is usually forged steel. The sealing surface of the seat is spray welded with hard alloy specified by the customer. Renewable threaded seat is used for NPS<10 globe valve, and welded on seat can be also optional if being requested by the customer. Welded on seat is used for NPS>12 carbon steel globe valves. For stainless steel globe valve, intergral seat is usually adopted, or to weld hard alloy directly intergrally. Threaded or welded on seat is also optional for stainless steel globe valve if being requested by the customer.
Stem design
The stem is of integral forged design. The minimum diameter of the stem shall per the standard requirement.
Stem nut
Usually, the stem nut is made of ASTM A439 D2. It is also can be made of copper ally if being requested by the customer. For large sized globe valve, rolling bearing is fitted at the two sides of stem nut in order to minimize the open and close torque of the globe valve.
Special globe valve
Besides the common globe valves, we also makes cryogenic globe valve, bellow sealed globe valve, Jacketed globe valve, etc.
| Materials |
| NO. | Part Name | Material |
| 24 | Grease Nipple | Brass |
| 23 | Grub Screw | Carbon steel |
| 22 | Hand Wheel Nut | Carbon steel |
| 21 | Hand Wheel | Malleable iron/cast steel ductile iron |
| 20 | Yoke Nut | Carbon steel/stainless steel |
| 19 | Eye Bolt and Nut | A 193 B7/A194 2H~A193 B8/A194 8 |
| 18 | Pin | Carbon steel/stainless steel |
| 17 | Stem Nut | A 439-D2/cu-alloy |
| 16 | Gland Flange | Carbon steel/stainless steel |
| 15 | Gland | Stain less steel |
| 14 | Gland Bush | Carbon steel/stainless steel |
| 13 | Back Seat | Stainless steel |
| 12 | Disc Nut | CS+SS/SS/SS+STL |
| 11 | Stem | Stainless steel |
| 10 | Seat Ring | CS+SS/SS/SS+STL(See body material) |
| 09 | Disc | CS+SS/SS/SS+STL(See body material) |
| NO. | Part Name | WCB | LCB | WC6 | WC9 |
| 08 | Stud and Nut | A193 Gr B7/A194 Gr 2H | A193 Gr B7/A194 Gr 4 | A193 Gr B16/A194 Gr 4/7 | A193 Gr B16/A194 Gr 4/7 |
| 07 | Gland Packing | Graphite | Graphite | Graphite | Graphite |
| 06 | Gasket | Soft lron | Soft lron | Ss304 | Ss304 |
| 05 | Thrust Ring | A105 | A182 F304 | A182 F11 | A182 F22 |
| 04 | Back Up Ring | A105 | A182 F304 | A182 F11 | A182 F22 |
| 03 | Yoke | A216 Gr WCB | A352 Gr LCB | A271 Gr WC6 | A271 Gr WC9 |
| 02 | Bonnet | A216 Gr WCB | A352 Gr LCB | A271 Gr WC6 | A271 Gr WC9 |
| 01 | Body | A216 Gr WCB | A352 Gr LCB | A271 Gr WC6 | A271 Gr WC9 |
| NO. | Part Name | C5 | C12 | CF8 | CF8M |
| 08 | Stud and Nut | A193 Gr B16/A194 Gr 4/7 | A193 Gr B16/A194 Gr 4/7 | A193 Gr B7/A194 Gr 2H | A193 Gr B7/A194 Gr 2H |
| 07 | Gland Packing | Graphite | Graphite | Graphite | Graphite |
| 06 | Gasket | Ss304 | Ss304 | Ss304 | Ss316 |
| 05 | Thrust Ring | A182 F22 | A182 F22 | A182 F304 | A182 F316 |
| 04 | Back Up Ring | A182 F22 | A182 F22 | A182 F304 | A182 F316 |
| 03 | Yoke | A216 Gr C5 | A217 Gr C12 | A351 Gr CF8 | A351 Gr CF8M |
| 02 | Bonnet | A216 Gr C5 | A217 Gr C12 | A351 Gr CF8 | A351 Gr CF8M |
| 01 | Body | A216 Gr C5 | A217 Gr C12 | A351 Gr CF8 | A351 Gr CF8M |
Dimensions (mm) and weight for ANSI Class 600
| Size | inch | 2 | 2-1/2 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 |
| L | mm | 292 | 330 | 356 | 432 | 508 | 559 | 660 | 787 | 838 | 889 | 991 |
| L-SP | mm | 178 | 216 | 254 | 305 | 381 | 457 | 584 | 711 | 813 | 889 | 991 |
| H | mm | 510 | 610 | 610 | 725 | 800 | 1010 | 1180 | 1360 | 1780 | 1800 | 2160 |
| W | mm | 250 | 300 | 300 | 350 | 500 | 550 | 600 | 600 | 400 | 650 | 650 |
| Weight | KG | 38 | 45 | 60 | 95 | 150 | 230 | 540 | 1150 | 1720 | 2530 | 2900 |
Dimensions (mm) and weight for ANSI Class 900
| Size | inch | 2 | 2-1/2 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 |
| L | mm | 368 | 419 | 381 | 457 | 559 | 610 | 737 | 838 | 965 | 1029 | 1130 |
| L-SP | mm | 225 | 254 | 305 | 365 | 432 | 508 | 660 | 787 | 914 | 991 | 1092 |
| H | mm | 550 | 580 | 675 | 750 | 815 | 1085 | 1300 | 1420 | 1825 | 2000 | 2310 |
| W | mm | 300 | 350 | 350 | 350 | 350 | 350 | 350 | 400 | 450 | 650 | 650 |
| Weight | KG | 55 | 80 | 80 | 130 | 250 | 360 | 900 | 1520 | 2050 | 3050 | 3600 |
Dimensions (mm) and weight for ANSI Class 1500
| Size | inch | 2 | 2-1/2 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 |
| L | mm | 368 | 419 | 470 | 546 | 673 | 705 | 832 | 991 | 1130 | 1257 |
| L-SP | mm | 216 | 254 | 305 | 405 | 483 | 559 | 711 | 864 | 991 | 1067 |
| H | mm | 565 | 580 | 380 | 800 | 825 | 1130 | 1450 | 1535 | 2311 | 2691 |
| W | mm | 300 | 350 | 400 | 450 | 450 | 450 | 450 | 500 | 650 | 650 |
| Weight | KG | 55 | 80 | 95 | 160 | 350 | 520 | 1430 | 2280 | 2830 | 3600 |
Dimensions (mm) and weight for ANSI Class 2500
| Size | inch | 2 | 2-1/2 | 3 | 4 | 5 | 6 | 8 | 10 | 12 |
| L | mm | 451 | 508 | 578 | 673 | 794 | 914 | 1022 | 1270 | 1422 |
| L-SP | mm | 279 | 330 | 368 | 457 | 533 | 610 | 762 | 914 | 1041 |
| H | mm | 575 | 605 | 725 | 835 | 875 | 1200 | 1510 | 1720 | 2692 |
| W | mm | 350 | 350 | 350 | 400? | 400 | 400 | 450? | 650 | 650 |
| Weight | KG | 70 | 110 | 140 | 350 | 950 | 1350 | 2000 | 2500 | 3300 |
Fangyuan Valve Group Co. Ltd, seated at Wuxing Industrial Zone, Oubei, Yongjia County, so called as "Pump & Valve Village of China", close to the national scenic spot Nanxijiang River to the east and facing the downtown of Wenzhou City to the south, and established in 1998 with the former as Zhejiang Fangyuan Valve Manufacturing Co. Ltd, has got a great achievement via hard work and continual going forth ahead and become a magnate of plate gate valve from an unknown small enterprise and leads the future of this industry. Fangyuan Valve Group Co. Ltd was derived from Zhejiang Fangyuan Valve Manufacturing Co. Ltd in 2005 and holds 5 stock subsidiaries, three production bases in Wenzhou, Shanghai and Lishui and a cast base in Lishui, a total registered capital up to 4, 000, 000 USD, a total land area 110000m2, over 600 staff members, 60 of which are technicians, a digital process center and more than 350 sets of various middle and large equipments and an annual output up to 12000 tons.
This Group comes as a key enterprise among the said"Pump & Valve Village of China"and a well known enterprise in the national valve industry and specializes in the production of plate gate valve, gas valve, electric station valve etc., with the development, design and invention patent know-how up to the advanced technical level of the world and the leading level of the nation and some of the products used to replace the imported ones. This Group has been accredited to ISO9001, API6A/6D, CE, AZ etc., won the first prize of scientific advance of Zhejiang Province and elected as a member of the first-grade supply network of China Petroleum, a member of China Petrochemical Resource Market, a member of No. 1 Energy Network, a member for supply of the national electric power system, an appointed production enterprise by Chemical Equipment General Corp., a Wenzhou high-tech enterprise, a start enterprise of Yongjia County, one of the 30 powerful enterprises among the said village and a banking credit AAA grade enterprise in the successive recent years. It holds a powerful strength in the technical, management and market etc. Respects and a notable superiority in the severe market competition.
The products, approved by the nation and province early or late, have been elected as quality products of Zhejiang Province and well-known ones of Wenzhou. This Group follows the guide policy of"takeing people as the base, managing the company with laws, prospecting the enterprise with quality, continuing innovations"and makes the products well sold to all over the country and USA, Canada, the Middle East, Europe etc. World markets, greatly favored by the users therein. Therefore a solid basis has been made for the further open-up of the world market, for the making of Fangyuan brand, for the national industrial progression and for the great target to create a valve magnate of China and step forward to the 50 powerful valve companies of the world.
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