RTZ1-/GQ Series Gas Regulator

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Product Features

Precise outlet pressure control with high pressure regulation accuracy; fast response and excellent shut-off performance.

Simple pressure setting, easy installation and maintenance; compact structure allowing online maintenance and requiring minimal installation space.

Integrated pressure regulation and overpressure shut-off available.

Applicable Media

Natural gas, manufactured gas, liquefied petroleum gas, air and other non-corrosive gases.

Suitable for small gas-fired boilers and industrial furnaces; can serve as a load regulator for large regulators.

Technical Parameters

Inlet pressure P₁: 0.2–4.0 MPa

Outlet pressure P₂: 0.1–0.4 MPa

Pressure regulation accuracy class: AC10

Shut-off accuracy: 1%

Lock-up pressure class: SG20

Operating temperature: -20°C ~ 60°C

Nominal pressure: PN16, PN25, PN40

Nominal diameter: DN25, DN40, DN50

RTZ1-5( /1.6-GQ (Ductile Iron) Flow Rate Table (MPa)

P₁ \ P₂	0.1	0.15	0.2	0.25	0.3	0.35	0.4
0.2	155	130	—	—	—	—	—
0.3	210	205	190	155	—	—	—
0.4	260	260	260	250	225	175	—
0.5	310	310	310	310	305	290	255
0.6	365	365	365	365	365	360	345
0.7	415	415	415	415	415	415	410
0.8	470	470	470	470	470	470	470
1.0	570	570	570	570	570	570	570
1.2	675	675	675	675	675	675	675
1.6	885	885	885	885	885	885	885

Note: The flow values in the table are measured under standard conditions for natural gas with a relative density of 0.6.

RTZ1-50/4.0-GQ (Forged Steel Body) Flow Rate Table (MPa)

P₁ \ P₂	0.1	0.15	0.2	0.25	0.3	0.35	0.4
1.0	525	525	525	525	525	525	525
1.2	620	620	620	620	620	620	620
1.5	765	765	765	765	765	765	765
1.8	910	910	910	910	910	910	910
2.0	1005	1005	1005	1005	1005	1005	1005
2.2	1100	1100	1100	1100	1100	1100	1100
2.5	1245	1245	1245	1245	1245	1245	1245
2.8	1385	1385	1385	1385	1385	1385	1385
3.0	1480	1480	1480	1480	1480	1480	1480
3.2	1580	1580	1580	1580	1580	1580	1580
3.5	1720	1720	1720	1720	1720	1720	1720
3.8	1865	1865	1865	1865	1865	1865	1865
4.0	1960	1960	1960	1960	1960	1960	1960

Note: The flow values in the table are measured under standard conditions for natural gas with a relative density of 0.6.

RTZ1-25/4.0-GQ (Forged Steel Body) Flow Rate Table (MPa)

P₁ \ P₂	0.1	0.15	0.2	0.25	0.3	0.35	0.4
0.2	120	100	—	—	—	—	—
0.3	160	160	150	120	—	—	—
0.4	200	200	200	195	175	135	—
0.5	245	245	245	245	240	225	200
0.6	285	285	285	285	285	280	270
0.7	325	325	325	325	325	325	325
0.8	365	365	365	365	365	365	365
1.0	445	445	445	445	445	445	445
1.2	530	530	530	530	530	530	530
1.5	650	650	650	650	650	650	650
1.8	775	775	775	775	775	775	775
2.0	855	855	855	855	855	855	855
2.2	935	935	935	935	935	935	935
2.5	1060	1060	1060	1060	1060	1060	1060
2.8	1180	1180	1180	1180	1180	1180	1180
3.0	1265	1265	1265	1265	1265	1265	1265
3.2	1345	1345	1345	1345	1345	1345	1345
3.5	1470	1470	1470	1470	1470	1470	1470
3.8	1590	1590	1590	1590	1590	1590	1590
4.0	1670	1670	1670	1670	1670	1670	1670

Note: The flow values in the table are measured under standard conditions for natural gas with a relative density of 0.6.

P₁ \ P₂	0.1	0.15	0.2	0.25	0.3	0.35	0.4
0.2	155	130	—	—	—	—	—
0.3	210	205	190	155	—	—	—
0.4	260	260	260	250	225	175	—
0.5	310	310	310	310	305	290	255
0.6	365	365	365	365	365	360	345
0.7	415	415	415	415	415	415	410
0.8	470	470	470	470	470	470	470
1.0	570	570	570	570	570	570	570
1.2	675	675	675	675	675	675	675
1.6	885	885	885	885	885	885	885

P₁ \ P₂	0.1	0.15	0.2	0.25	0.3	0.35	0.4
0.2	155	130	—	—	—	—	—
0.3	210	205	190	155	—	—	—
0.4	260	260	260	250	225	175	—
0.5	310	310	310	310	305	290	255
0.6	365	365	365	365	365	360	345
0.7	415	415	415	415	415	415	410
0.8	470	470	470	470	470	470	470
1.0	570	570	570	570	570	570	570
1.2	675	675	675	675	675	675	675
1.6	885	885	885	885	885	885	885

P₁ \ P₂	0.1	0.15	0.2	0.25	0.3	0.35	0.4
0.2	155	130	—	—	—	—	—
0.3	210	205	190	155	—	—	—
0.4	260	260	260	250	225	175	—
0.5	310	310	310	310	305	290	255
0.6	365	365	365	365	365	360	345
0.7	415	415	415	415	415	415	410
0.8	470	470	470	470	470	470	470
1.0	570	570	570	570	570	570	570
1.2	675	675	675	675	675	675	675
1.6	885	885	885	885	885	885	885