What is Cland Packing Plug Valve ?
The cland packing plug valve body is equipped with packing, by pressing the packing to achieve the sealing of the plug and plug body sealing surface. The cland packing plug valve sealing performance is better, widely used in the nominal pressure of PN1.0MPa occasions; The screw under the plug body can play the role of adjusting the tightness of the plug and the plug body.
Advantages of cland packing plug valve
- 01The whole valve stem is forged, and the modulation treatment is added, which has high strength and good toughness.
- 02The stem is flight-proof and the packing seals can be replaced online.
- 03The valve cover at the bottom of the valve body is provided with an adjusting support to adjust the position of the valve core.
- 04The seal of the bottom valve cover adopts a completely isolated structure of the integral gasket, which ensures that the valve has an absolutely reliable seal when the valve cover is bolted.
- 05Cone seal, large sealing contact area, oil film lubrication, long service life.
- 06The valve body must have strong permeability resistance and resistance to intergranular corrosion, and the valve body of the plug valve is a high-grade casting with good quality and high precision.
Design Standard
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| The characteristics of cland packing plug valve |
Because of the packing, the sealing performance is better. Usually this kind of plug valve has a packing gland, and the plug does not need to extend out of the valve body, thus reducing a leakage path for the working medium. The minimalist internal parts, the opening and closing parts, that is, the plug, are completely covered by the bushing, the valve body and the plug are not worn, and the simple and economical bushing and top seal replacement can complete the maintenance and renewal of the valve. The surface roughness of the valve stem after machining can reach Ra0.4, which fully meets the leakage requirements of the valve stem seal, can work reliably for a long time, and does not require tightening and maintenance. The bottom valve cover is the bottom pressure-bearing part of the valve, and it is also the fixing and installation support for the bottom sealing gasket and the bottom adjusting rod, which requires high rigidity and strength. |
| Technical Parameters | |
| Size | DN15-DN1500, 1/2''-60'' |
| Pressure | PN10-PN420, Class150-Class2500 |
| Temperature | -200°C to 650°C |
| Connection Type | Flange, Thread, Socket weld, Butt weld |
| Operation Mode | Manual, Pneumatic, Electric, Hydraulic, Gear operation |
| Materials | ||
| Valve Body | Forged | A105, LF2, F5, F9, F11, F22, F304, F316, F347, F904, F51, F53, F310, N08020, Inconel625, etc |
| Cast | WCB, LCB, C5, C12, WC6, WC9, CF8, CF8M, CF8C, 4A, 5A, CN7M, C95800, CW6MC, etc | |
| Valve Stem | F6a, 17-4PH, XM-19, F304, F316, F347, F904, F51, F53, F310, Monel400, Monel500, N08020, Inconel625, Incoloy825, etc | |
| Valve Disc | A105, LF2, F5, F9, F11, F22, F304, F316, F347, F904, F51, F53, F310, N08020, Inconel625, F6a, 17-4PH, XM-19, F304, F316, F347, F904, F51, F53, F310, Monel400, Monel500，Incoloy825，WCB, LCB, C5, C12, WC6, WC9, CF8, CF8M, CF8C, 4A, 5A, CN7M, C95800, CW6MC, etc | |
| Seat Sealing | SS, BR, CU, AS, CS, AL, PTFE, NBR, FKM, AI203, etc | |
| Design Standards | |
| Valve Body | API 6D, API 608, ASME B16.34, DIN 3357, BS 5351, GOST 9833, JIS B2071, GB/T 12237, etc. |
| Flange | ANSI B16.5, EN 1092-1, JIS B2220, GB/T 9113, ASME B16.47, GOST 12821, DIN 2543-2545, etc. |
| Connection | ANSI B16.10, ASME B16.25, JIS B2212, GOST 33259, DIN 3202, etc. |
| Test Standards | API 598, ISO 5208, BS EN 12266, ASME B16.104, GOST 9544-2015, JIS B2003, DIN 3230, etc. |
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