Detailed Description V230V231D self-pressure regulating valve: V230D / V231D Self-pressure (DP) control valve from the thin film (piston) actuators, valves, valve seats, valve, balance springs and other components, is a no external energy is transferred and only rely on media pressure changes itself for automatic regulation of the pressure valve, is based on the principles of mechanics, will be charged with implementing agencies to produce medium into force pushing the control spool element displacement to achieve automatic adjustment control up and down, the valve before or after the valve constant pressure or energy-saving products, the pressure for non-corrosive liquid, gas, steam and other media control is widely used in petroleum, chemical, metallurgy, light industry and other industrial sectors and urban heating, heating system. Self-pressure (DP) Features Self-regulating valve pressure (DP) regulating valve is the biggest feature can no electricity, no gas, place of work, the pressure setting can be adjusted during operation in a big adjustment range, sensitive, good sealing performance, the spool is force balanced and is not stable force is small, regulate large scale and other large pressure range of features. This product has nominal PN1.6,2.5,4.0; nominal diameter range of 20 ~ 300mm; temperature ≤300 ℃ wide range of varieties to choose from Self-pressure (DP) model specification category pressure regulating valve control. Pressure control valve front pressure regulating valve regulating valve after the pressure regulating valve on rising pressure rising pressure valve closed type open type valve seal soft seal hard hard hard soft seal sealing sealing Soft sealing Hard sealing Soft sealing type V230D01 V231D01 V230D02 V231D02 V230D03 V231D03 V230D04 V231D04 specifications DN15 ~ 200 Self-pressure (DP) control valve main parts Material Material Code C (WCB) P (304) R (316) The main parts of the valve body WCB (ZG230-450) ZG1Cr18Ni9Ti (304) ZG1Cr18Ni12Mo2Ti ( 316) plug and seat 1Cr18Ni9Ti (304) 1Cr18Ni9Ti (304) 1Cr18Ni12Mo2Ti (316) stem 1Cr18Ni9Ti 1Cr18Ni9Ti 1Cr18Ni12Mo2Ti EPDM or FKM diaphragm sandwiched fiber membrane cover A3 steel galvanized packing PTFE, flexible graphite self-pressure spring 60Si2Mn (differential) control valve main technical parameters Nominal diameter DN (mm) 20 25 32 40 50 65 80 100 125 150 200 Rated flow coefficient Kv 6.3 8 16 20 32 50 80 125 160 320 450 Noise measure coefficient Z value 0.6 0.6 0.55 0.5 0.55 0.5 0.45 0.4 0.35 0.3 0.2 allow pressure 1.6 (MPa) 1.6 1.5 1.2 1.0 4.0 (MPa) 2.0 1.5 1.2 1.0 Nominal pressure (MPa) 1.6 2.5 4.0 regulation accuracy (%) ± 5 Working Temperature (℃) liquid ≤140 ; gas ≤80; condenser ≤200; condenser and fins ≤350; condenser and extensions ≤300; suitable for medium to perform water, gas, steam, low viscosity medium pressure balancing element bellows rolling diaphragm allowable leakage Hard Seal (L / h) ≤4 × 10-4 × valve rated capacity soft seal 10 bubbles / min 20 bubbles / min 40 bubbles / min maximum working pressure MPa Nominal (△ Pmax relationship and working pressure and working temperature) Self pressure (DP) control valve Actuator Model V230D01 (D03) V231D01 (D03) V230D02 (D04) V231D02 (D04) effective area cm2 32 ※ 80 ※ 250 630 32 ※ 80 ※ 250 630 Pressure Range MPa 0.3 ~ 1.2 0.1 ~ 0.6 0.015 ~ 0.15 ~ 0.005 ~ 0.035 0.3 ~ 1.1 0.1 ~ 0.5 0.12 0.015 0.005 0.035 0.05 0.8 ~ 1.6 ~ 0.3 1.0 ~ 1.6 0.01 ~ 0.07 0.05 ~ 0.25 0.01 ~ 0.06 normal working pressure to ensure a minimum pressure △ P MPa ≥0.05 ≥0.04 ≥0.01 ≥0.05 ≥0.05 ≥0.04 ≥0.01 ≥0.05 allowed between the upper and lower film deposition chamber maximum pressure MPa 2.0 1.25 0.4 0.15 2.0 1.25 0.4 0.15 stroke mm 18 18 23 23 18 18 23 23 control lines, fittings or brass steel pipe 10 × 1; card sets of joints R1 / 4 "Note: The pressure setting range is not available for DN150 ~ 200 Self-pressure (pressure) valve seat structure 1 Body 2 3 4 bonnet valve shaft 5 membrane diaphragm spring cover 6 7 8 9 adjusting nut connecting pipe 10 of the bellows 11 balanced diaphragm 12 filling valve Self-pressure (DP) control valve main body size dimensions nominal diameter DN (mm) 15 20 25 32 40 50 65 80 100 125 150 200 L (mm) 130 150 160 180 200 230 290 310 350 400 480 600 B (mm) 212 212 238 238 240 240 275 275 380 380 295 325 V230D / V231D Self-pressure (DP) regulating valve consists of a thin film type (piston) actuators, valves, valve seats, valve, balance springs and other components, is a no external energy and only rely on the media itself was transferred to pressure changes automatically adjust the pressure valve is based on the principles of mechanics, will be charged with implementing agencies to produce medium into force pushing the control spool element displacement to achieve automatic adjustment control up and down, before or after the valve constant pressure valve or pressure energy-saving products for non-corrosive pressure liquid, gas, steam and other media control is widely used in petroleum, chemical, metallurgy, light industry and other industrial sectors and urban heating, heating system. Self-pressure (DP) Features Self-regulating valve pressure (DP) regulating valve is the biggest feature can no electricity, no gas, place of work, the pressure setting can be adjusted during operation in a big adjustment range, sensitive, good sealing performance, the spool is force balanced and is not stable force is small, regulate large scale and other large pressure range of features. This product has nominal PN1.6,2.5,4.0; nominal diameter range of 20 ~ 300mm; temperature ≤300 ℃ wide range of varieties to choose from Self-pressure (DP) model specification category pressure regulating valve control. Pressure control valve front pressure regulating valve regulating valve after the pressure regulating valve on rising pressure rising pressure valve closed type open type valve seal soft seal hard hard hard soft seal sealing sealing Soft sealing Hard sealing Soft sealing type V230D01 V231D01 V230D02 V231D02 V230D03 V231D03 V230D04 V231D04 specifications DN15 ~ 200 Self-pressure (DP) control valve main parts Material Material Code C (WCB) P (304) R (316) The main parts of the valve body WCB (ZG230-450) ZG1Cr18Ni9Ti (304) ZG1Cr18Ni12Mo2Ti ( 316) plug and seat 1Cr18Ni9Ti (304) 1Cr18Ni9Ti (304) 1Cr18Ni12Mo2Ti (316) stem 1Cr18Ni9Ti 1Cr18Ni9Ti 1Cr18Ni12Mo2Ti EPDM or FKM diaphragm sandwiched fiber membrane cover A3 steel galvanized packing PTFE, flexible graphite self-pressure spring 60Si2Mn (differential) control valve main technical parameters Nominal diameter DN (mm) 20 25 32 40 50 65 80 100 125 150 200 Rated flow coefficient Kv 6.3 8 16 20 32 50 80 125 160 320 450 Noise measure coefficient Z value 0.6 0.6 0.55 0.5 0.55 0.5 0.45 0.4 0.35 0.3 0.2 allow pressure 1.6 (MPa) 1.6 1.5 1.2 1.0 4.0 (MPa) 2.0 1.5 1.2 1.0 Nominal pressure (MPa) 1.6 2.5 4.0 regulation accuracy (%) ± 5 Working Temperature (℃) liquid ≤140 ; gas ≤80; condenser ≤200; condenser and fins ≤350; condenser and extensions ≤300; suitable for medium to perform water, gas, steam, low viscosity medium pressure balancing element bellows rolling diaphragm allowable leakage Hard Seal (L / h) ≤4 × 10-4 × valve rated capacity soft seal 10 bubbles / min 20 bubbles / min 40 bubbles / min maximum working pressure MPa Nominal (△ Pmax relationship and working pressure and working temperature) Self pressure (DP) control valve Actuator Model V230D01 (D03) V231D01 (D03) V230D02 (D04) V231D02 (D04) effective area cm2 32 ※ 80 ※ 250 630 32 ※ 80 ※ 250 630 Pressure Range MPa 0.3 ~ 1.2 0.1 ~ 0.6 0.015 ~ 0.15 ~ 0.005 ~ 0.035 0.3 ~ 1.1 0.1 ~ 0.5 0.12 0.015 0.005 0.035 0.05 0.8 ~ 1.6 ~ 0.3 1.0 ~ 1.6 0.01 ~ 0.07 0.05 ~ 0.25 0.01 ~ 0.06 normal working pressure to ensure a minimum pressure △ P MPa ≥0.05 ≥0.04 ≥0.01 ≥0.05 ≥0.05 ≥0.04 ≥0.01 ≥0.05 allowed between the upper and lower film deposition chamber maximum pressure MPa 2.0 1.25 0.4 0.15 2.0 1.25 0.4 0.15 stroke mm 18 18 23 23 18 18 23 23 control lines, fittings or brass steel pipe 10 × 1; card sets of joints R1 / 4 "Note: The pressure setting range is not available for DN150 ~ 200 Self-pressure (pressure) valve seat structure 1 Body 2 3 4 bonnet valve shaft 5 membrane diaphragm spring cover 6 7 8 9 adjusting nut connecting pipe 10 of the bellows 11 balanced diaphragm 12 filling valve Self-pressure (DP) control valve main body size dimensions nominal diameter DN (mm) 15 20 25 32 40 50 65 80 100 125 150 200 L (mm) 130 150 160 180 200 230 290 310 350 400 480 600 B (mm) 212 212 238 238 240 240 275 275 380 380 295 325 size actuator effective area cm2 32 80 250 630 ΦR (mm) 172 172 263 380 H D01 (D03) 435 430 470 520 D02 (D04) 440 435 440 520 actuator size Effective area cm2 32 80 250 630 ΦR (mm) 172 172 263 380 H D01 (D03) 435 430 470 520 D02 (D04) 440 435 440 520 Ordering :( national standards) a, A: product name, model number, nominal diameter B: medium and temperature, pressure range C: Are there attachments, delivery, special requirements so that we can correct for your selection. Second, if the company has been selected by the design of the valve type, please directly contact our sales center to order according to the valve parameters. Third, when you use the occasion is very important or the environment is more complicated, please provide design drawings and detailed parameters, our engineers can concentrate on your expert review and analysis of four, the above prices are nominal price, please contact us. We can provide you with professional solutions, including design, custom, sets, run the service. We have been committed leader in the field of valve industry, to provide you with the latest knowledge of valves, the best service, the best technical adviser. If you have any questions, you can call us, we will try our best to provide you with quality services. We aspire to be the world's leading manufacturer of valves. That the Crown has a sound quality assurance system and excellent after-sales service system. Over the years, our company consistently implement quality first principles and policies, "is committed to perfection, relentless pursuit, create the future, to the world" approach to business, will continue the application of new technologies, new processes, new materials, and actively develop new varieties for the majority of users to provide better valve products and better service. And strive to become a world-class supplier of valve products. We welcome new and old customers work together to create brilliant!