Nitrogen supply device (nitrogen sealing valve)

NegotiableUpdate on 05/13

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

Product model: ZZDQ nominal diameter: DN20~150mm nominal pressure: PN1.0~1.6 MPa Main materials: HT200, ZG230~450 ZG1Cr18Ni9Ti valve core and seat: 1Cr18Ni9Ti Stellite alloy overlay flange standard: GB9113-88 Flange sealing surface type: convex surface

Product Details

Product Overview:

Pressure regulating valves do not require external energy and use the energy of the regulated medium itself as a power source. A pressure stabilizing device that automatically controls the flow rate of the valve medium to maintain a constant pressure behind the valve. It has been widely used in natural gas extraction and transportation with continuous gas delivery, urban gas, and industrial production sectors such as metallurgy, petroleum, and chemical industry.
Valve features: High control accuracy, which can be about twice as high as the general ZZY type direct operated pressure regulating valve. Adjusting the pressure difference ratio (such as 0.8MPa in front of the valve and 0.001MPa behind the valve) is particularly suitable for micro pressure gas control.
The pressure setting is implemented on the commander, making it convenient, fast, labor-saving, and time-saving to continuously set during operation.

Parts information:

Valve body and cover: HT200, ZG230~450 ZG1Cr18Ni9Ti
Valve core and seat: 1Cr18Ni9Ti Stellite alloy overlay welding
Packing: Polytetrafluoroethylene
Push rod and liner: 2Cr13

1. Main valve
2. Main valve core
3. Main valve actuator
4. Throttle valve
5. Pressure reducing valve
6. Commander valve core
7. Testing agency
8. Pre set spring
9. Commander

Technical Specifications:

Nominal diameter DN (mm)	20			25	40		50	80		100	150
Valve seat diameter (mm)	6	15	20	25	32	40	50	65	80	100	125	150
Rated flow coefficient KV	3.2	5	8	10	20	32	50	80	100	160	250	400
Pressure regulation range Kpa	0.5~7 5~20 15~50 30~150
Nominal pressure PN (MPa)	1.0 1.6
Temperature of the regulated medium (℃)	-20~90
flow characteristics	Quick open
Adjustment accuracy (%)	≤ 3
Effective area of actuator membrane (cm2)	200				280				400
Allowable leakage amount	Compliant with ANSI B16.104-1976 Class IV

Specification and weight:

◆ External dimensions

Nominal diameter (DN)	20	25	32	40	50	65	80	100	125	150
Distance between flange end faces (L)	150	160	180	200	230	290	310	350	400	480
H	610	610	630	630	640	710	720	730	800	930
H1	330	330	350	350	360	430	440	450	520	650
φ	310								400
D	105	115	140	150	165	185	200	220	250	285
D 1	75	85	100	110	125	145	160	180	210	240
D 2	56	65	76	84	99	118	132	156	184	211
n-d	4-14		4-18				8-18			8-22

Connection standard:

◆ Connection size and standards
Flange standard: GB9113-88;
Flange sealing surface type: convex surface;
Signal interface: Internal thread M16X1.5;
The distance between the valve body flange and the flange end face can be manufactured according to the user's standards.
Standards such as ANSI, JIS, JPI, etc.

◆ Ordering Notice
Please provide the following information when placing an order:
·Name and model of pressure regulating valve
·Nominal diameter (mm)
·Nominal pressure (MPa)
·Media name
·Work pressure and scope
·Valve body material
·Other special requirements