Valve Stem

Gate Valve Extended Stem

Size: 1/2" ~ 36"(DN15 ~ DN900)
Rating: ANSI 150lb ~ 1500lb
Body Materials: Carbon steel, Stainless steel
Trim: A105+ENP, 13Cr, F304, F316
Operation: Lever, Gear, Electric, Pneumatic, Hydraulic actuators

The three-bar cut-off butterfly valve includes the valve body, the valve plate and the driving device. The valve plate is opened and closed by a four-bar mechanism. The four-bar mechanism includes an active rod fixed to the main transmission shaft, a two-follower rod between the transmission shaft and the valve plate, and a valve plate. The valve plate support is arranged on the valve plate, the active rod is connected with the valve plate support, and the two follower rods are connected with the transmission shaft and the valve plate support respectively. The butterfly valve drive device drives the main drive shaft to rotate, so as to drive the four-linkage mechanism composed of active rod, two-follower rod and valve plate to move relative to the valve body pedestal, select the appropriate connecting rod size, make the valve plate move according to the set running track, and realize the reliable valve opening and closing action. The lever cutting butterfly valve has the advantages of small structure size and light weight. The valve plate has a period of opening and closing translation process relative to the valve body at the moment of valve opening and closing, and the friction free operation can ensure the sealing performance of the sealing surface for a long time.
1 Suitable for blast furnace hot blast furnace system, can be used as cold air valve, gas (air) cut-off valve, gas (air) combustion valve, flue valve and so on. The utility model has the advantages of compact structure, light weight, small installation space, strict and reliable seal and long life.
2. Main Technical characteristics of connecting Bar cutting Butterfly Valve
The finite element analysis and design are adopted to optimize the size of the connecting rod system to ensure the reliable running track of the valve under high temperature and high pressure. At the same time, we adopt the special structure design of sealing compensation, coating, surfacing wear and corrosion resistant material, multi-layer sealing structure at the shaft end, etc., and the use of many patented technologies makes the connecting rod cutting butterfly valve have the characteristics of high temperature resistance, wear resistance and long life.

Double Shaft without Pin stem butterfly valves are popular and meet many markets

Design to comply with MSS SP-67, BS5155 and API 609
Compatible with ANSI, DIN, JIS flanges
Size range: handles (1 1/2 to 12 inches), manual gear operators (1 1/2 to 48 inches)
Pressure: from PN0.6MPa to PN1.6MPa
Medium: acids, alkalis and salts

Materials list:
Body materials: cast iron, ductile iron and stainless steel
Disc: Ductile Iron (with PTFE Coated)
Seat: PTFE
Shaft: SS410, SS416
Pin: SS316
O ring: NBR, EPDM, neoprene and viton
Bushing: PTFE, nylon and lubricated bronze

The lighter gas valve with a metal stem presents its own array of advantages. The metal construction, typically made from durable alloys, endows the valve with enhanced strength and rigidity. It can withstand higher pressures and more extreme conditions compared to its plastic counterpart. The metal stem conducts heat more efficiently, which can be beneficial in certain applications where rapid ignition or heat dissipation is required. This valve is often favored in industrial or professional-grade lighters that need to endure heavy usage and harsh environments. It also imparts a more premium and robust feel to the lighter, appealing to users who value durability and performance.

This lighter gas valve is crafted with a plastic stem, offering a unique set of characteristics. The plastic material provides excellent resistance to corrosion, making it suitable for various environments where moisture or chemical exposure might be a concern. It is lightweight, which contributes to the overall portability and ease of handling of the lighter. The plastic stem also offers good insulation properties, reducing the risk of heat transfer during operation. This type of valve is often more cost-effective in production, allowing for a more budget-friendly option for consumers. It is well-suited for general-purpose lighters used in daily activities such as lighting candles, cigarettes, or small stove

* The SQK Rising Stem Gate Valve is exceptionally sturdy, rugged, and durable, with a reputation for quality, integrity, and long service.

* They are designed for tight sealing and ease of operation. The valves are available flanged & butt-weld ends in pressure rating from ASME Class 150 to Class 2500, and in a variety of materials of construction.

* Gate Valves are of flexible wedge design, outside screw and yoke, and bolted-bonnet construction. The valves conform to API 600.

Main features
* Bolted body-bonnet design,seal welded & Valves with pressure seal bonnet
* Bellows-sealed Gate and Globe valves available
* Bolted body-bonnet joints provided with spiral-wound stainless steel gasket and graphite filler for maximum protection against leaks
* Die-formed graphite inner packing rings and braided graphite end rings with Inconel wire reinforcement and corrosion inhibitor
* T-head stem-disc connection of gate valve fully meets strength requirements of API 602 and API 598
* Rolled ACME thread on stem for smooth operation
* Tapered shoulder on the stem for back seating
* Self-aligning type gland assembly with stud-and-nut tightening
* Integral hard-faced body seat for globe and check valves
* Spring-loaded disc on check valves suitable for no horizontal applications too
* Gate and globe valves can be offered with electrical actuators
* Austenitic SS forging for body and bonnet of Cryogenic valves, resulting in excellent impact strength, minimal heat loss and resistance to corrosion
* Valves can be offered to NACE MR-0175 and other special NACE requirements

* The SQK Extended Stem Gate Valve is exceptionally sturdy, rugged, and durable, with a reputation for quality, integrity, and long service.

* They are designed for tight sealing and ease of operation. The valves are available flanged & butt-weld ends in pressure rating from ASME Class 150 to Class 2500, and in a variety of materials of construction.

* Gate Valves are of flexible wedge design, outside screw and yoke, and bolted-bonnet construction. The valves conform to SQK OS & Y Gate Valve.

Main features
* Bolted body-bonnet design,seal welded & Valves with pressure seal bonnet
* Bellows-sealed Gate and Globe valves available
* Bolted body-bonnet joints provided with spiral-wound stainless steel gasket and graphite filler for maximum protection against leaks
* Die-formed graphite inner packing rings and braided graphite end rings with Inconel wire reinforcement and corrosion inhibitor
* T-head stem-disc connection of gate valve fully meets strength requirements of API 602 and API 598
* Rolled ACME thread on stem for smooth operation
* Tapered shoulder on the stem for back seating
* Self-aligning type gland assembly with stud-and-nut tightening
* Integral hard-faced body seat for globe and check valves
* Spring-loaded disc on check valves suitable for no horizontal applications too
* Gate and globe valves can be offered with electrical actuators
* Austenitic SS forging for body and bonnet of Cryogenic valves, resulting in excellent impact strength, minimal heat loss and resistance to corrosion
* Valves can be offered to NACE MR-0175 and other special NACE requirements

Non -rising Stem Gate Valve (DGV01-TF01)
Nominal Diameter: DN40-DN1200
Nominal Pressure: PN1.0/1.6MPa
End Standard: EN ISO GB BS DIN HG JB SANS GOST KSB JIS AS ASME
Design: BS5163 AWWA C509
Face to Face: B$5163 ASME B16.10 AWWA C509 16 GB/T12221
Testing: EN12266-1 APl598