Stainless Steel Plug Valve for Soft Sealing

Specifications:
Plunger valve
Type: U41S-25
Size: DN40-DN200
Standard: GB
Pressure: PN25
Valve body, bonnet: WCB
Stem: SS
Seal ring: PTEE+graphite
Trunk piston: 2Cr13
Connection type: Flanged end
Control method: Manual
Suitable medium: Water, vapour, oil
Suitable temperature: ≤ 200 centidegree

Chief property and specification
Normal Pressure		Shell test		Water seal test
LB		Mpa		Mpa
1.6		2.4		1.8
2.5		3.8		2.8
4.0		6.0		4.4
6.4		9.6		7.0
10.0		15.0		11.0
16.0		24.0		18.0

Main external and connection dimension
DN	L	D	D1	D2	b	f	Z-d	H	Do	WT(kg)
PN16
10	130	90	60	40	14	2	4-14	198	120	4.7
15	130	95	65	45	16	2	4-14	218	120	5.2
20	150	105	75	55	16	2	4-14	258	140	7.1
25	160	115	85	65	16	2	4-14	275	160	7.4
32	180	135	100	78	18	2	4-18	280	180	8.5
40	200	145	110	85	18	3	4-18	330	200	12.5
50	230	160	125	100	18	3	4-18	350	240	20
65	290	180	145	120	18	3	4-18	400	280	25
80	310	195	160	135	20	3	8-18	355	280	35
100	350	215	180	155	22	3	8-18	415	320	50
125	400	245	210	185	24	3	8-18	460	360	75
150	480	280	240	210	24	3	8-23	510	400	100
200	600	335	295	265	26	3	12-23	710	400	210
250	650	405	355	320	30	3	12-23	768	450	446
300	750	460	410	375	30	3	12-23	925	500	648

working principle
The plug body rotates with the valve stem to realize the opening and closing action. The small plug valve without packing is also called the "Cock" plug valve. The plug body of the plug valve is mostly a cone (also a cylinder), which cooperates with the cone hole surface of the valve body to form a sealing pair. The plug valve is the earliest valve used, with simple structure, rapid switching and low fluid resistance. Ordinary plug valves are sealed by the direct contact between the finely machined metal plug body and the valve body, so the sealing performance is poor, the opening and closing force is large, and it is easy to wear. Generally, it can only be used for low (not higher than 1 MPa) and small Caliber (less than 100 mm) occasions.
advantage

1. The plug valve is used for frequent operation, opening and closing quickly and lightly.

2. The plug valve has low fluid resistance.

3. The plug valve has simple structure, relatively small size, light weight and easy maintenance.

4. Good sealing performance

5. It is not restricted by the installation direction, and the flow direction of the medium can be arbitrary.

6. No vibration and low noise.

Picture


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