GTL-BZ41H Insulated Jacketed Gate Valve

Insulation jacketed gate valve is mainly used in petroleum, chemical, metallurgy, pharmaceutical and other systems, the valve jacket welding between the valve two flanges, the side of the valve, the bottom is provided with a jacket connection mouth, jacket can freely flow through steam or other hot insulation medium, to ensure that the viscous medium can flow through the valve smoothly.

Execution standard:

Design and manufacture: GB12234

Flange size: JB/T79GB9113

Pressure and temperature: GB9131

Length: GB12221

Butt welding connection size: -

Inspection and Test: GB13927

DETAILS

Materials

Name of parts	Materials
Name of parts	BZ41Y-16I-25I-40I	BZ41Y-16I-25I-40I	BZ41Y-16I-25I-40I
Body,Bonnet	Chromium-molybdenum steel
Wedge disc	Alloy steel + hard alloy	Chromium nickel titanium steel	Chromium nickel molybdenum titanium steel
Stem	Alloy steel
Stem Nuts	Ampco
Handwheel	Gray cast iron, malleable cast iron

Specification

Model	Nominal pressure				Working temperature℃	Suitable medium
Model	Nominal pressure	Shell test (water)(MPa)	Seal test (water)(MPa)	Low pressure seal (air) (MPa)	Working temperature℃	Suitable medium
BZ41H-16C BZ41W-16P(R)	1.6	2.4	1.8	0.6	≤200	Acid, alkali
BZ41W-25P(R)	2.5	3.8	2.8	0.6	≤200	Acid, alkali
BZ41W-40P(R)	4.0	6.0	4.4	0.6	≤200	Acid, alkali
BZ41W-64P(R)	6.4	9.6	7.0	0.6	≤200	Acid, alkali

Dimensions

Model	Pressure	DN	Size（mm）
Model	Pressure	DN	L	D	D1	D2	b	z-d	H	D0
BZ41H-16C BZ41W-16P BZ41W-16R	1.6	40	200	160	125	100	18-3	4-18	310	200
		50	250	180	145	120	18-3	4-18	358	240
		65	265	195	160	135	20-3	8-18	373	240
		80	280	215	180	155	20-3	8-18	435	280
		100	300	245	210	185	22-3	8-18	500	300
		125	325	280	240	210	24-3	8-23	614	320
		150	350	335	295	265	26-3	12-23	674	360
		200	400	405	355	320	30-3	12-25	818	400
		250	450	460	410	375	30-4	12-25	969	450
		300	500	520	470	435	34-4	16-25	1145	560
BZ41H-25C BZ41W-25P BZ41W-25R	2.5	40	200	160	125	100	20-3	4-18	358	240
		50	250	180	145	120	22-3	8-18	373	240
		65	265	195	160	135	22-3	8-18	435	280
		80	280	230	190	160	24-3	8-18	500	300
		100	300	270	220	188	28-3	8-15	614	320
		125	325	300	250	218	30-3	8-25	674	360
		150	350	360	310	278	34-3	12-25	818	400
		200	400	425	370	332	36-3	12-30	969	450
		250	450	485	430	390	40-4	12-30	1145	560
		300	500	550	490	448	40-4	16-34	1145	640