RISING STEM WEDGE GATE VALVE FOR TIGHT SEALING AT LOW DIFFERENTIAL PRESSURE

Rising-stem gate valves are used when it is important to know by immediate inspection whether the valve is open or closed and when the threads (stem and gate) exposed to the fluid could become damaged by fluid contaminants. In this design, the stem rises out of the gate valve when the valve is opened.

The wedge gate of the Kolink gate valve provides tight sealing even at low differential pressure. Grooved wedge guided and fitted by body, assures proper and consistent seal regardless of valve position, and also minimizes seat wear and damage, since seating surfaces of the wedge and seat are in contact during less than 5% of the total wedge travel.

• Size: 2″ – 48″ or DN50 – DN1200
• Pressure Rating: Class 150 – Class 2500 or PN 16 – PN 420
• Materials Of Valve Body: WCB, LCB, WC6, WC9, C12, C5, CF8, CF8M, Duplex Stainless Steels, etc.
• Operated By: Handwheel, Gear, Pneumatic, Hydraulic and Electric actuator

Features

• Bolted bonnet
• Outside screw and yoke
• Rising stem and non-rising handwheel
• Flexible wedge, fully guided
• Metal-to-metal seat
• Renewable seat ring and stem backseat
• Manual operation standard, gear operator and actuation available
• Butt weld end
• Flange end: raised face or ring type joint

Applicable Standards

• Design & Manufacture: API 600, API 6D, BS 1414
• Face to Face: API 6D, ASME B16.10, EN 558, DIN 3202, BS 2080
• Connection End: ASME B16.5, ASME B16.25, EN 1092, EN 12627, JIS B2220
• Test : API 600, API 6D, EN 12266, ISO 5208