Hongqi Threaded Diaphragm-Seal Pressure Gauge with 100mm Diameter

Product Description

Hongqi Dia100mm Threaded diaphragm-seal pressure gauge which is high corrosive and easily crystallized
Accuracy: 2.5%, 1.6%, 1.0%
Ambient temperature: -40°C to +65°C
Process temperature: Max 100°C (Dry)
Operating pressure: 75% of the scale value
Over pressure limit: 25% of full scale value
Case:painted steel/Steel Chrome Plating
Ring:painted steel
To enlarge the using range of all kind of the universal pressure gauge, and make it suited for measuring the pressure of the service medium which is high corrosive and easily crystallized, or the medium which has floating solid. And in order to prevent some service medium from entering the universal pressure gauge or to be easy for clear the place where the precipitation is resistanced, there must have a diaphgram pressure gauge which is made up of a diaphragm-seal and a universal pressure gauge. The diaphgram gauge is mainly used in oil industry, chemical industry, pharmacy industry and so on.
The diaphragm pressure gauge is made up of univesal pressure gauge and the different structure diaphragm to be as a airproof system, and the pressurized liquid is filled. When diaphragm the service medium act on the diaphragm and make it move, the pressurized liquid is compessoned. And the flexibility parts will be moved caused by the instinctive character of the pressurized liquid and the pointor point it out on the dial. And when the rigidity of the diaphragm is small enough, the pointing measurement is nearly the same as the service medium pressure.
Temperature character of diaphragm pressure gauge.Because the pressurized liquid was filled in the diaphragm pressure gauge as the medium which send the pressure, the temperature influence of the diaphragm pressure gauge is relative with the expansion coefficient of the pressurized liquid, the rigidity of the diaphragm, and the temperature of the pressure burdened part. Especially to the low measuring range the influence is obvious. Usu-ally the pressure burdened part error is no more than 0.1%/C. So the temperature influence of diaph-ragm pressure gauge is made up of the universal pressure gauge and temperature influence of the pressure burdened part of the diaphragm.
The anti-corrosive character of the pressure gauge.The anti-corrosive character of the pressure gauge will be assuredby selecting the suitable diaphragm which touch with the service medium,flange and gasket.
To make diaphragm pressuge gauge reliable and safe, the pressurized liquid should be selected according to different use.

Sealing liquid	Burden part temperature	Density(g/cm3)	Coefficient of volume expand	Use
High viscosity silicon oil	-10~200ºC	1.07	0.95x10 Negative cube	High temperature industry
Low viscosity silicon oil	-30~100ºC	0.94	1.08x10 Negative cube	General use
Glycerin liquid	-5~100ºC	1.27	0.61x10 Negative cube	Food industry
Vegetable oil	-5~100ºC	0.93	1.03x10 Negative cube	Food industry
Fluovin oil	-30~150ºC	1.93	0.75x10 Negative cube	Hydrogen,Oxygen

1,Opening type convexity flange

Code	The up limit(MPa)	Standard recommend flange	The dimension of male face flange (mm)							Dimension figure
			D	K	d	f	L	C	B
MF1	4	JIS-10/20K 50A	155	120	100	3	19	18	50	figure 1
	4	50-1.0/4.0HGJ46	160	125	100	3	19	18	50
	4	ANSI-2B 150Ib	152	121	92.1	3	19	18	2"
	4	ANSI-2B 300/100Ib	165	127	92.1	3	19	18	2"
	6~10	25-10.0HGJ47	125	89	50.8	7	20	20	25	figure 2
	6~10	50-10.0HGJ47	165	127	92.1	3.5	20	26	50
	16~25	20-25.0HGJ53	130	89	43	7	22	20	25
MF	4	25-4.0 DIN	115	85	65	3	M12	26	25	figure 3

I-shape convexity flange[code MG] The up limit:≤4MPa (Unit:mm)

Recommend flange code	Dimension
	DN	D1	K	d2	L
JSI-10/25K 25K	25	125	90	70	19
JSI-10/25K 25K	20	100	75	58	15
JSI-10/25K 25K	15	95	70	52	15
ANSI-1B-15IB	1"	108	79.4	50.8	15.7
ANSI-1B-300/600Ib	1"	124	88.9	50.8	19.1
20-1.0/4.0HGJ47	20	105	75	56	14

FAQ:
Q: Are you trade company?
A:No , we have over 700 staffs in our factory which has 28 years professional production experience.
Q:Can you do OEM services?
A:No problem.
Q:Are you able to provide customized service for non-standard applications?
A:Yes, We have a professional R&D team can customize dial, thread, case....based on customer requirements.
Q:Do you have technical drawings or data sheets of your instruments?
A:Yes, we can supply upon customer's request, please contact with the sales.
Q:How about the delivery time?
A:The delivery time is 10-45days depends on the products type and quantity.
Q:Do you inspect the products before shipment?
A:Our QA department will have 100% inspection before shipping.
Q:What is your warranty?
A: 1Year warranty.
Please feel free to send inquiry to us for more details of this product or other products in our showroom!