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Design and Manufacture:Cast steel globe valve to BS 1873 and ASME B16.34;Forged steel globe valve to API 602.
lnspection and Test:API 598.
BW end dimension:ASME B16.25
Socket-weld dimension:ASME B16.11
Face to face and end to end:ASME B16.10
Pressure-temperature ratingsg:ASME B16.34
Actuation
Hand wheel i***ct hand wheel& gear box is usually used for globe valve actuation.Chain wheel and electric actuator can be also used for globe valve actuation if being requested by the customers.
Gasket of fCover Flange
Stainless steel+lfexible graphite wounded gasket is used for Class 150and Class300 globe valve,Stainless steel+flexible graphite wounded gasket is used for Class600,and ring joint gasket is also optional for Class600,Ring jointg asket is used for Clas900 globe valve,Pressureized seal design is used for Class 1500-Class2500 globe valve.
Packing Seal
Molded flexible graphite is used for packing material.PTFE or combined packing material can be also used if being reques ted by the customer.The internal surface of the stuffing box.of which area is contacted with the packing,isof excellent finish (Ra 3.2¦Ìm)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 com-pactness(Ra0.8¦Ìm) and ensure the reliable tightness of the stem area.
The features of globe valve
Bolted Bonnet;Outside Screw and Yoke;Rising Stems;Metallic seating surfaces.
Stem Design
The stem is of integral forged design,The minimum diameter of the stem shall per the standard requirement.
Belleville Spring Loaded Packing l***cting System
lf being requested by the customer,the Belleville spring loaded packing i***cting can be adopted for enhancing the durability and reliability of the packing seal.
Back Seating Design
All ur globe valves have the back seating design.ln most Cases,the carbon steel globe valve is fitted with a renewable back seat,For stainless steel globe valve,the back seat is machined directly in th |
| Company: |
Zhejiang Zhongcheng Valve Co.,ltd
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| Contact: |
Ms. Kelly Zhang |
| Address: |
Anfeng Ind, Oubei Town |
| Postcode: |
325100 |
| Tel: |
86-577-67331552 |
| Fax: |
86-577-67986806 |
| E-mail: |
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