Manual Liquefied Gas Special Globe Valve

The manual liquefied gas special shut-off valve is a forced-sealed valve, so when the valve is closed, pressure must be applied to the valve flap to force the sealing surface to not leak. When the medium enters the valve from below the valve flap, the resistance to be overcome by the operating force is the friction force of the valve stem and the packing and the thrust generated by the pressure of the medium. The force of closing the valve is greater than the force of opening the valve, so the valve stem The diameter of the stem should be large, otherwise the valve stem can be bent.

Product Details

Product Description

Precautions

1. After using the special valve for liquefied gas, it is necessary to observe the opening and closing operation status regularly and find out the problem in time;

2. Regularly add lubricating oil to maintain good lubrication conditions of various moving parts;

3. After using for a period of time, if it is found that the piston of the special valve for liquefied gas is closed, the piston ring should be checked for replacement.

Nominal diameter	Main dimensions and connection dimensions
Nominal diameter	L	D	D1	D2	b	Z-d	H	D0
J41Y-16C
15	130	95	65	45	14-2	4-Φ14	170	120
20	150	105	75	55	14-2	4-Φ14	190	140
25	160	115	85	65	14-2	4-Φ14	205	160
32	180	135	100	78	16-2	4-Φ18	270	180
40	200	145	110	85	16-3	4-Φ18	310	200
50	230	160	125	100	16-3	4-Φ18	358	240
65	290	180	145	120	18-3	4-Φ18	373	240
80	310	195	160	135	20-3	8-Φ18	435	280
100	350	215	180	155	20-3	8-Φ18	500	300
125	400	245	210	185	22-3	8-Φ18	614	320
150	480	280	240	210	24-3	8-Φ23	674	360
200	600	335	295	265	26-3	12-Φ23	811	400
250	650	405	355	320	30-3	12-Φ25	969	450
300	750	460	410	375	30-3	12-Φ25	1145	580
350	850	520	470	435	34-4	16-Φ25	1280	640
400	980	580	525	485	36-4	16-Φ30	1452	640
J41Y-25C
15	130	95	65	45	16-2	4-Φ14	170	120
20	150	105	75	55	16-2	4-Φ14	190	140
25	160	115	85	65	16-2	4-Φ14	205	160
32	180	135	100	78	18-2	4-Φ18	270	180
40	200	145	110	85	18-3	4-Φ18	310	200
50	230	160	125	100	20-3	4-Φ18	358	240
65	290	180	145	120	22-3	8-Φ18	373	240
80	310	195	160	135	22-3	8-Φ18	435	280
100	350	230	190	160	24-3	8-Φ23	500	300
125	400	270	220	188	28-3	8-Φ25	614	320
150	480	300	250	218	30-3	8-Φ25	674	360
200	600	360	310	278	34-3	12-Φ25	811	400
250	650	425	370	332	36-3	12-Φ30	969	450
300	750	485	430	390	40-4	16-Φ30	1145	580
350	850	550	490	448	44-4	16-Φ34	1280	640
400	980	610	550	505	48-4	16-Φ34	1452	640

Installation requirements

1. The inner cavity of the special valve for liquefied gas should be cleaned before installation and the defects caused in transportation should be removed;

2. Lubricating parts of the liquefied gas special valve transmission device should be fully lubricated before use.

3. The special valve installation of liquefied gas should keep the butterfly valve drive shaft in a horizontal state and the piston valve vertically upward;

4. The special valve for liquefied gas should be debugged before use, keeping all functions of the transmission intact, and the limit stroke and over-torque protection are reliable;

5. Before starting the electric device, carefully read the instructions for the electric device provided.

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