{"id":789,"date":"2025-12-09T13:29:31","date_gmt":"2025-12-09T05:29:31","guid":{"rendered":"http:\/\/zjjafm.ceshi24.7-mi.net\/?p=789"},"modified":"2026-02-04T17:25:22","modified_gmt":"2026-02-04T09:25:22","slug":"zzy%e8%87%aa%e5%8a%9b%e5%bc%8f%e5%8d%95%e5%ba%a7%e8%b0%83%e8%8a%82%e9%98%80","status":"publish","type":"post","link":"https:\/\/www.jinaovalve.com\/?p=789","title":{"rendered":"ZZY self-operated single-seat control valve"},"content":{"rendered":"

Instructions for the use of self-operated pressure regulating valves<\/strong>
\nZZY type self-operated pressure regulating valve (ZZY self-operated regulating valve) does not need to add additional energy, and uses the energy of the adjusted medium as the power source to introduce the actuator to control the position of the valve core, and changes the pressure difference and flow at both ends of the bend to stabilize the pressure in front of the valve (or behind the valve). It has the advantages of sensitive action, good sealing, and small fluctuation force at the pressure set point, and is widely used in the automatic control of gas, liquid and steam medium pressure reduction and pressure regulation or pressure relief and regulation.
\nThis series of products has three structures: single seat (ZZYP), sleeve (ZZYM), double (ZZYN), and three structures; There are two types of actuators: membrane type and piston type; There are two types of pressure adjustment: pressure adjustment after the valve for pressure reduction (type B) and pressure adjustment for pressure relief (type K). The nominal pressure level of the product is PN16, 40, 64; the valve body diameter range DN20~300; There are three levels of leakage volume: level II, class IV and class VI; The flow characteristics are quick opening; The pressure is segmented from 15~2500Kpa. It can be combined to meet the requirements of user working conditions as needed.<\/p>\n

Product features of self-operated pressure regulating valves<\/strong>
\nSelf-operated pressure regulating valves do not require additional energy and can work in places without electricity and gas, which is convenient and energy-saving.
\nThe pressure segment range is fine and intersecting, and the adjustment accuracy is high.
\nThe pressure setpoint can be set continuously during operation.
\nFor the pressure adjustment after the valve, the ratio of the pressure in front of the valve to the pressure behind the valve can be 10:1~10:8.
\nRubber diaphragm detection, actuator measurement accuracy is high and action is sensitive.
\nThe pressure balance mechanism is used to make the control valve responsive and precise control.<\/p>\n

Self-powered pressure regulating valve parts material<\/strong>
\nValve body: ZG230-450, ZG1Cr18Ni9Ti, ZGCr18Ni12Mo2Ti
\nValve spool: 1Cr18Ni9Ti, Cr18Ni12Mo2Ti
\nSeat: 1Cr18Ni9Ti, Cr18Ni12Mo2Ti
\nStem: 1Cr18Ni9Ti, Cr18Ni12Mo2Ti
\nMembrane cover: A3, A3 steel coated Teflon stainless steel
\nFillers: nitrile, ethylene, fluorine, oil-resistant rubber<\/p>\n

Specifications and technical parameters of self-operated pressure regulating valves<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n

\u00a0<\/span>Nominal diameter DN (mm)<\/span><\/span><\/span><\/p>\n<\/td>\n

\n

20<\/p>\n<\/td>\n

\n

25<\/p>\n<\/td>\n

\n

32<\/p>\n<\/td>\n

\n

40<\/p>\n<\/td>\n

\n

50<\/p>\n<\/td>\n

\n

65<\/p>\n<\/td>\n

\n

80<\/p>\n<\/td>\n

\n

100<\/p>\n<\/td>\n

\n

125<\/p>\n<\/td>\n

\n

150<\/p>\n<\/td>\n

\n

200<\/p>\n<\/td>\n

\n

250<\/p>\n<\/td>\n

\n

300<\/p>\n<\/td>\n<\/tr>\n

\n

\u00a0<\/span>Rated Flow Coefficient (KV)<\/span><\/span><\/span><\/p>\n<\/td>\n

\n

7<\/p>\n<\/td>\n

\n

11<\/p>\n<\/td>\n

\n

20<\/p>\n<\/td>\n

\n

30<\/p>\n<\/td>\n

\n

48<\/p>\n<\/td>\n

\n

75<\/p>\n<\/td>\n

\n

120<\/p>\n<\/td>\n

\n

190<\/p>\n<\/td>\n

\n

300<\/p>\n<\/td>\n

\n

480<\/p>\n<\/td>\n

\n

760<\/p>\n<\/td>\n

\n

1100<\/p>\n<\/td>\n

\n

1750<\/p>\n<\/td>\n<\/tr>\n

\n

\u00a0<\/span>Rated stroke (mm)<\/span><\/span><\/span><\/p>\n<\/td>\n

\n

8<\/p>\n<\/td>\n

\n

10<\/p>\n<\/td>\n

\n

14<\/p>\n<\/td>\n

\n

20<\/p>\n<\/td>\n

\n

25<\/p>\n<\/td>\n

\n

40<\/p>\n<\/td>\n

\n

50<\/p>\n<\/td>\n

\n

60<\/p>\n<\/td>\n

\n

70<\/p>\n<\/td>\n<\/tr>\n

\n

\u00a0<\/span>Nominal pressure PN (Mpa)<\/span><\/span><\/span><\/p>\n<\/td>\n

\n

1.6\u30014.0\u30016.4<\/p>\n<\/td>\n<\/tr>\n

\n

\u00a0<\/span>Pressure Regulation Range (MPa)<\/span><\/span><\/span><\/p>\n<\/td>\n

\n

15\uff5e50 40\uff5e80 60\uff5e100 80\uff5e140 120\uff5e180 160\uff5e220 200\uff5e260
240\uff5e300 280\uff5e350 330\uff5e400 380\uff5e450 430\uff5e500 480\uff5e560 540\uff5e620
600\uff5e700 680\uff5e800 780\uff5e900 880\uff5e1000 980\uff5e1500 1000\uff5e2500<\/p>\n<\/td>\n<\/tr>\n

\n

\u00a0<\/span>Flow Characteristics (\u00b0C)<\/span><\/span><\/span><\/p>\n<\/td>\n

\n

\u00a0<\/span>Hurry up<\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n

\n

\u00a0<\/span>Adjustment Accuracy (%)<\/span><\/span><\/span><\/p>\n<\/td>\n

\n

\u00b15<\/p>\n<\/td>\n<\/tr>\n

\n

\u00a0<\/span>Operating temperature (\u00b0C)<\/span><\/span><\/span><\/p>\n<\/td>\n

\n

\u2264350<\/p>\n<\/td>\n<\/tr>\n

\n

\u00a0<\/span>Allowable leakage<\/span><\/span><\/span><\/p>\n<\/td>\n

\n

\u00a0<\/span>Hard seal (L\/H)<\/span><\/span><\/span><\/p>\n<\/td>\n

\n

Single seat: \u2264\u00a010-4<\/sup>\u00a0valve rated capacity (Class IV); Double seat, sleeve: \u22645\u00d710-3<\/sup>\u00a0valve rated capacity (Class II)<\/span><\/span><\/span><\/p>\n<\/td>\n<\/tr>\n

\n

\u00a0<\/span>Soft seal (ml\/h)<\/span><\/span><\/span><\/p>\n<\/td>\n

\n

0.15<\/p>\n<\/td>\n

\n

0.30<\/p>\n<\/td>\n

\n

0.45<\/p>\n<\/td>\n

\n

0.60<\/p>\n<\/td>\n

\n

0.90<\/p>\n<\/td>\n

\n

1.7<\/p>\n<\/td>\n

\n

4.0<\/p>\n<\/td>\n

\n

6.75<\/p>\n<\/td>\n

\n

11.10<\/p>\n<\/td>\n

\n

16.0<\/p>\n<\/td>\n<\/tr>\n

\n

\u00a0<\/span>Stress reduction ratio<\/span><\/span><\/span><\/p>\n<\/td>\n

\n

\u00a0<\/span>It’s huge<\/span><\/span><\/span><\/p>\n<\/td>\n

\n

10<\/p>\n<\/td>\n<\/tr>\n

\n

\u00a0<\/span>So small<\/span><\/span><\/span><\/p>\n<\/td>\n

\n

1.25<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Self-operated pressure regulating valve dimensions and weight \u00a0<\/strong><\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n

Nominally known as the diameter DN<\/span><\/span><\/span><\/p>\n<\/td>\n

\n

20<\/p>\n<\/td>\n

\n

25<\/p>\n<\/td>\n

\n

32<\/p>\n<\/td>\n

\n

40<\/p>\n<\/td>\n

\n

50<\/p>\n<\/td>\n

\n

65<\/p>\n<\/td>\n

\n

80<\/p>\n<\/td>\n

\n

100<\/p>\n<\/td>\n

\n

125<\/p>\n<\/td>\n

\n

150<\/p>\n<\/td>\n

\n

200<\/p>\n<\/td>\n

\n

250<\/p>\n<\/td>\n

\n

300<\/p>\n<\/td>\n<\/tr>\n

\n

\u00a0<\/span>Flange takes over size B<\/span><\/span><\/span><\/p>\n<\/td>\n

\n

383<\/p>\n<\/td>\n

\n

512<\/p>\n<\/td>\n

\n

603<\/p>\n<\/td>\n

\n

862<\/p>\n<\/td>\n

\n

1023<\/p>\n<\/td>\n

\n

1380<\/p>\n<\/td>\n

\n

1800<\/p>\n<\/td>\n

\n

2000<\/p>\n<\/td>\n

\n

2200<\/p>\n<\/td>\n<\/tr>\n

\n

\u00a0<\/span>Flange end face distance L<\/span><\/span><\/span><\/p>\n<\/td>\n

\n

150<\/p>\n<\/td>\n

\n

160<\/p>\n<\/td>\n

\n

180<\/p>\n<\/td>\n

\n

200<\/p>\n<\/td>\n

\n

230<\/p>\n<\/td>\n

\n

290<\/p>\n<\/td>\n

\n

310<\/p>\n<\/td>\n

\n

350<\/p>\n<\/td>\n

\n

400<\/p>\n<\/td>\n

\n

480<\/p>\n<\/td>\n

\n

600<\/p>\n<\/td>\n

\n

730<\/p>\n<\/td>\n

\n

850<\/p>\n<\/td>\n<\/tr>\n

\n

\u00a0<\/span>Pressure adjustment range kpa<\/span><\/span><\/span><\/p>\n<\/td>\n

\n

15-140<\/p>\n<\/td>\n

\n

H<\/p>\n<\/td>\n

\n

475<\/p>\n<\/td>\n

\n

520<\/p>\n<\/td>\n

\n

540<\/p>\n<\/td>\n

\n

710<\/p>\n<\/td>\n

\n

780<\/p>\n<\/td>\n

\n

840<\/p>\n<\/td>\n

\n

880<\/p>\n<\/td>\n

\n

915<\/p>\n<\/td>\n

\n

940<\/p>\n<\/td>\n

\n

1000<\/p>\n<\/td>\n<\/tr>\n

\n

A<\/p>\n<\/td>\n

\n

280<\/p>\n<\/td>\n

\n

308<\/p>\n<\/td>\n

\n

\n<\/td>\n<\/tr>\n

\n

280-500<\/p>\n<\/td>\n

\n

H<\/p>\n<\/td>\n

\n

455<\/p>\n<\/td>\n

\n

500<\/p>\n<\/td>\n

\n

520<\/p>\n<\/td>\n

\n

690<\/p>\n<\/td>\n

\n

760<\/p>\n<\/td>\n

\n

800<\/p>\n<\/td>\n

\n

870<\/p>\n<\/td>\n

\n

880<\/p>\n<\/td>\n

\n

900<\/p>\n<\/td>\n

\n

950<\/p>\n<\/td>\n<\/tr>\n

\n

A<\/p>\n<\/td>\n

\n

230<\/p>\n<\/td>\n<\/tr>\n

\n

120-300<\/p>\n<\/td>\n

\n

H<\/p>\n<\/td>\n

\n

450<\/p>\n<\/td>\n

\n

490<\/p>\n<\/td>\n

\n

510<\/p>\n<\/td>\n

\n

680<\/p>\n<\/td>\n

\n

750<\/p>\n<\/td>\n

\n

790<\/p>\n<\/td>\n

\n

860<\/p>\n<\/td>\n

\n

870<\/p>\n<\/td>\n

\n

890<\/p>\n<\/td>\n

\n

940<\/p>\n<\/td>\n<\/tr>\n

\n

A<\/p>\n<\/td>\n

\n

176<\/p>\n<\/td>\n

\n

194<\/p>\n<\/td>\n

\n

280<\/p>\n<\/td>\n<\/tr>\n

\n

480-1000<\/p>\n<\/td>\n

\n

H<\/p>\n<\/td>\n

\n

445<\/p>\n<\/td>\n

\n

480<\/p>\n<\/td>\n

\n

670<\/p>\n<\/td>\n

\n

740<\/p>\n<\/td>\n

\n

780<\/p>\n<\/td>\n

\n

850<\/p>\n<\/td>\n

\n

860<\/p>\n<\/td>\n

\n

880<\/p>\n<\/td>\n

\n

930<\/p>\n<\/td>\n<\/tr>\n

\n

A<\/p>\n<\/td>\n

\n

176<\/p>\n<\/td>\n

\n

194<\/p>\n<\/td>\n

\n

280<\/p>\n<\/td>\n<\/tr>\n

\n

600-1500<\/p>\n<\/td>\n

\n

H<\/p>\n<\/td>\n

\n

445<\/p>\n<\/td>\n

\n

570<\/p>\n<\/td>\n

\n

600<\/p>\n<\/td>\n

\n

820<\/p>\n<\/td>\n

\n

890<\/p>\n<\/td>\n

\n

950<\/p>\n<\/td>\n

\n

1000<\/p>\n<\/td>\n

\n

1100<\/p>\n<\/td>\n

\n

1200<\/p>\n<\/td>\n<\/tr>\n

\n

A<\/p>\n<\/td>\n

\n

85<\/p>\n<\/td>\n

\n

96<\/p>\n<\/td>\n<\/tr>\n

\n

1000-2500<\/p>\n<\/td>\n

\n

H<\/p>\n<\/td>\n

\n

445<\/p>\n<\/td>\n

\n

570<\/p>\n<\/td>\n

\n

600<\/p>\n<\/td>\n

\n

820<\/p>\n<\/td>\n

\n

890<\/p>\n<\/td>\n

\n

950<\/p>\n<\/td>\n

\n

1000<\/p>\n<\/td>\n

\n

1100<\/p>\n<\/td>\n

\n

1200<\/p>\n<\/td>\n

\n

\n<\/td>\n<\/tr>\n

\n

A<\/p>\n<\/td>\n

\n

85<\/p>\n<\/td>\n

\n

96<\/p>\n<\/td>\n<\/tr>\n

\n

\u00a0<\/span>Weight kg<\/span><\/span><\/span><\/p>\n<\/td>\n

\n

26<\/p>\n<\/td>\n

\n

37<\/p>\n<\/td>\n

\n

42<\/p>\n<\/td>\n

\n

72<\/p>\n<\/td>\n

\n

90<\/p>\n<\/td>\n

\n

114<\/p>\n<\/td>\n

\n

130<\/p>\n<\/td>\n

\n

144<\/p>\n<\/td>\n

\n

180<\/p>\n<\/td>\n

\n

200<\/p>\n<\/td>\n

\n

250<\/p>\n<\/td>\n<\/tr>\n

\n

\u00a0<\/span>Pressure pipe fitting threads<\/span><\/span><\/span><\/p>\n<\/td>\n

\n

M16\u00d71.5<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Self-operated pressure regulating valve connection size and standard<\/strong>
\nFlange standard: Casting method according to BG9113-88, JB\/79-94
\nFlange sealing surface type: PN16 convex surface
\nPN40 and 64 are concave and convex, and the valve body is concave
\nThe length of the structure is BG12221-98
\nActuator signal interface: female thread M16\u00d71.5
\n\u203b The body flange and flange end face distance can be manufactured according to the standard specified by the user. Such as: ANSI, JIS, DIN, etc.<\/p>\n

Self-operated pressure regulating valve ordering instructions<\/strong>
\nWhen ordering, please provide the following information:<\/strong>
\nThe name and model of the regulating valve
\nNominal pressure Mpa
\nNominal Diameter (mm)
\nRated flow factor (Kv)
\nInherent flow characteristics
\nMedia Name
\nOperating temperature and range
\nThe mode of operation of the whole machine
\npressure set point and adjustment range
\nValve body, valve trim and packing material
\nAttached attachments
\nOther special requirements<\/p>\n

\u00a0<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

\u54c1\u724c\uff1a \u91d1\u5965<\/p>\n

\u578b\u53f7\uff1aZZY<\/p>\n","protected":false},"author":1,"featured_media":788,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[8],"tags":[],"class_list":["post-789","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-shredder-fan"],"_links":{"self":[{"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=\/wp\/v2\/posts\/789","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=789"}],"version-history":[{"count":2,"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=\/wp\/v2\/posts\/789\/revisions"}],"predecessor-version":[{"id":1754,"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=\/wp\/v2\/posts\/789\/revisions\/1754"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=\/wp\/v2\/media\/788"}],"wp:attachment":[{"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=789"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=789"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jinaovalve.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}