Features
The series of valves with insulation, cold characteristics. According to GB design manufacturing flange connection according to 79-94 standard manufacturing for the petroleum, chemical, metallurgical, pharmaceutical industry. 

The valve due to the use of steam jacket insulation. So even if the outside temperature down to below zero, the valve is still flexible operation to ensure that the pipeline can be disconnected, the advantage is generally not control the valve. It is ideal for heavy oil piping control valves. 

According to the user needs to insert into the steam, heat transfer oil, cooling water, air conditioning and so on. Use the entire valve to warm or cool to the desired temperature. Can prevent the crystallization of the media.

Type I main connection size

Nominal diameter DN	L	D	D1	D2	B	F	Z-Φd	2-G
15	130	95	65	45	14	2	4-Φ14	3/8
20	150	105	75	55	14	2	4-Φ14	3/8
25	160	115	85	65	14	2	4-Φ14	3/8
32	165	135	100	78	16	2	4-Φ18	1/2
40	180	145	110	85	16	3	4-Φ18	1/2
50	200	160	125	100	16	3	4-Φ18	1/2
65	220	180	145	120	18	3	4-Φ18	1/2
80	250	195	160	135	20	3	4-Φ18	1/2
100	280	215	180	155	20	3	4-Φ18	1/2
125	320	280	240	210	22	3	4-Φ23	1/2
150	360	335	295	265	26	3	4-Φ23	1/2

 

Type Π main connection size

Nominal diameter DN	L	D	D1	D2	B	F	Z-Φd	2-G
15	130	95	65	45	14	2	4-Φ14	3/8
20	150	105	75	55	14	2	4-Φ14	3/8
25	160	115	85	65	14	2	4-Φ14	3/8
32	165	135	100	78	16	2	4-Φ18	1/2
40	180	145	110	85	16	3	4-Φ18	1/2
50	200	160	125	100	16	3	4-Φ18	1/2
65	220	180	145	120	18	3	4-Φ18	1/2
80	250	195	160	135	20	3	4-Φ18	1/2
100	280	215	180	155	20	3	4-Φ18	1/2
125	320	280	240	210	22	3	4-Φ23	1/2
150	360	335	295	265	26	3	4-Φ23	1/2