{"id":569,"date":"2026-07-13T06:54:10","date_gmt":"2026-07-13T06:54:10","guid":{"rendered":"https:\/\/www.xvs-valve.com\/?post_type=xvs_news&p=569"},"modified":"2026-07-13T06:54:11","modified_gmt":"2026-07-13T06:54:11","slug":"huong-lap-dat-van","status":"publish","type":"xvs_news","link":"https:\/\/www.xvs-valve.com\/vi\/xvs_news\/valve-installation-direction\/","title":{"rendered":"C\u1ea7n tu\u00e2n th\u1ee7 nh\u1eefng quy t\u1eafc n\u00e0o v\u1ec1 h\u01b0\u1edbng l\u1eafp \u0111\u1eb7t van?"},"content":{"rendered":"

H\u1ea7u h\u1ebft c\u00e1c th\u1ee3 l\u1eafp \u0111\u1eb7t \u0111\u1ec1u cho r\u1eb1ng m\u0169i t\u00ean tr\u00ean th\u00e2n van ch\u1ec9 \u0111\u01a1n thu\u1ea7n bi\u1ec3u th\u1ecb h\u01b0\u1edbng d\u00f2ng ch\u1ea3y c\u1ee7a ch\u1ea5t l\u1ecfng. N\u1ebfu van<\/a> N\u1ebfu l\u1eafp \u0111\u1eb7t ch\u1ec9 d\u1ef1a tr\u00ean s\u1ef1 hi\u1ec3u l\u1ea7m n\u00e0y, vi\u1ec7c th\u00e1o l\u1eafp ng\u01b0\u1ee3c s\u1ebd d\u1ec5 d\u1eabn \u0111\u1ebfn r\u00f2 r\u1ec9 b\u00ean trong. C\u00e1c van c\u00f3 c\u01a1 ch\u1ebf l\u00e0m k\u00edn hai chi\u1ec1u v\u00e0 van l\u00e0m k\u00edn khe h\u1edf kh\u00f4ng c\u00f3 m\u0169i t\u00ean ch\u1ec9 h\u01b0\u1edbng d\u00f2ng ch\u1ea3y. Tuy nhi\u00ean, c\u00e1c m\u0169i t\u00ean tr\u00ean c\u00e1c lo\u1ea1i van c\u00f3 c\u1ea5u tr\u00fac kh\u00e1c nhau l\u1ea1i mang \u00fd ngh\u0129a ho\u00e0n to\u00e0n kh\u00e1c nhau. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd l\u00e0m r\u00f5 \u0111\u1ecbnh ngh\u0129a v\u1ec1 c\u00e1c m\u0169i t\u00ean v\u00e0 ti\u00eau chu\u1ea9n l\u1eafp \u0111\u1eb7t c\u1ee7a c\u00e1c lo\u1ea1i van ph\u1ed5 bi\u1ebfn.<\/p>\n\n\n\n

C\u00e1c ti\u00eau chu\u1ea9n l\u1eafp \u0111\u1eb7t \u0111\u00fang cho t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i van<\/h2>\n\n\n\n

Van m\u1ed9t chi\u1ec1u<\/h3>\n\n\n\n

M\u0169i t\u00ean tr\u00ean van m\u1ed9t chi\u1ec1u ch\u1ec9 ra h\u01b0\u1edbng d\u00f2ng ch\u1ea3y cho ph\u00e9p c\u1ee7a ch\u1ea5t l\u1ecfng. Van ph\u1ea3i \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t \u0111\u00fang theo h\u01b0\u1edbng d\u00f2ng ch\u1ea3y c\u1ee7a ch\u1ea5t l\u1ecfng; vi\u1ec7c l\u1eafp \u0111\u1eb7t ng\u01b0\u1ee3c s\u1ebd l\u00e0m t\u1eafc ngh\u1ebdn ho\u00e0n to\u00e0n d\u00f2ng ch\u1ea3y c\u1ee7a ch\u1ea5t l\u1ecfng.<\/p>\n\n\n\n

Van c\u1ea7u v\u00e0 van ti\u1ebft l\u01b0u<\/h3>\n\n\n\n

Lo\u1ea1i \u0111\u0129a \u0111\u01a1n: M\u0169i t\u00ean ch\u1ec9 \u0111\u01b0\u1eddng \u0111i c\u1ee7a m\u00f4i ch\u1ea5t; th\u00f4ng th\u01b0\u1eddng, m\u00f4i ch\u1ea5t \u0111i v\u00e0o t\u1eeb ph\u00eda d\u01b0\u1edbi v\u00e0 tho\u00e1t ra t\u1eeb ph\u00eda tr\u00ean. N\u00ean l\u1eafp \u0111\u1eb7t theo h\u01b0\u1edbng thu\u1eadn. M\u1eb7c d\u00f9 l\u1eafp \u0111\u1eb7t ng\u01b0\u1ee3c c\u00f3 th\u1ec3 t\u1ea1m th\u1eddi \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 k\u00edn kh\u00edt t\u1ed1t h\u01a1n, nh\u01b0ng ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t qu\u00e1 l\u1edbn s\u1ebd d\u1eabn \u0111\u1ebfn van kh\u00f4ng m\u1edf \u0111\u01b0\u1ee3c ho\u1eb7c tr\u1ee5c van b\u1ecb g\u00e3y. H\u00e3y tham kh\u1ea3o nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ec3 bi\u1ebft ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t t\u1ed1i \u0111a cho ph\u00e9p. Lo\u1ea1i \u0111\u0129a k\u00e9p: M\u0169i t\u00ean bi\u1ec3u th\u1ecb h\u01b0\u1edbng l\u00e0m k\u00edn c\u1ee7a m\u00f4i ch\u1ea5t, th\u00f4ng th\u01b0\u1eddng \u0111\u1ea7u v\u00e0o \u00e1p su\u1ea5t cao v\u00e0 \u0111\u1ea7u ra \u00e1p su\u1ea5t th\u1ea5p. Vi\u1ec7c l\u1eafp \u0111\u1eb7t ph\u1ea3i tu\u00e2n theo c\u00e1c d\u1ea5u m\u0169i t\u00ean. Van c\u00f3 th\u1ec3 duy tr\u00ec kh\u1ea3 n\u0103ng l\u00e0m k\u00edn \u1edf ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t th\u1ea5p, trong khi hi\u1ec7u su\u1ea5t l\u00e0m k\u00edn s\u1ebd ho\u00e0n to\u00e0n th\u1ea5t b\u1ea1i \u1edf ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t cao.<\/p>\n\n\n\n

Van b\u01b0\u1edbm<\/h3>\n\n\n\n

C\u00e1c lo\u1ea1i van b\u01b0\u1edbm \u0111\u1ed3ng t\u00e2m, \u0111\u01a1n l\u1ec7ch t\u00e2m, k\u00e9p l\u1ec7ch t\u00e2m v\u00e0 ba l\u1ec7ch t\u00e2m \u0111\u1ec1u l\u1ea5y h\u01b0\u1edbng m\u0169i t\u00ean l\u00e0m h\u01b0\u1edbng l\u00e0m k\u00edn. Ph\u1ea3i l\u1eafp \u0111\u1eb7t \u0111\u00fang chi\u1ec1u; vi\u1ec7c l\u1eafp ng\u01b0\u1ee3c s\u1ebd g\u00e2y r\u00f2 r\u1ec9 ch\u1ea5t l\u1ecfng li\u00ean t\u1ee5c.<\/p>\n\n\n\n

Van ba thanh<\/h3>\n\n\n\n

M\u0169i t\u00ean tr\u00ean van ba thanh bi\u1ec3u th\u1ecb h\u01b0\u1edbng l\u00e0m k\u00edn c\u1ee7a m\u00f4i tr\u01b0\u1eddng. Nghi\u00eam c\u1ea5m l\u1eafp ng\u01b0\u1ee3c, v\u00ec \u0111i\u1ec1u n\u00e0y s\u1ebd d\u1eabn \u0111\u1ebfn h\u1ecfng h\u1ec7 th\u1ed1ng l\u00e0m k\u00edn v\u00e0 r\u00f2 r\u1ec9 li\u00ean t\u1ee5c.<\/p>\n\n\n\n

Van an to\u00e0n<\/h3>\n\n\n\n

M\u0169i t\u00ean tr\u00ean van an to\u00e0n ch\u1ec9 ra h\u01b0\u1edbng d\u00f2ng ch\u1ea3y cho ph\u00e9p c\u1ee7a m\u00f4i ch\u1ea5t, ph\u00f9 h\u1ee3p v\u1edbi d\u00f2ng x\u1ea3 \u00e1p c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng.<\/p>\n\n\n\n

Van \u0111i\u1ec1u khi\u1ec3n<\/h3>\n\n\n\n

Van \u0111i\u1ec1u khi\u1ec3n m\u1ed9t gh\u1ebf: M\u0169i t\u00ean ch\u1ec9 \u0111\u01b0\u1eddng \u0111i c\u1ee7a ch\u1ea5t l\u1ecfng v\u1edbi c\u1ea5u tr\u00fac ti\u00eau chu\u1ea9n \u201cv\u00e0o d\u01b0\u1edbi, ra tr\u00ean\u201d. N\u00ean l\u1eafp \u0111\u1eb7t theo h\u01b0\u1edbng thu\u1eadn. C\u01a1 ch\u1ebf l\u00e0m k\u00edn ng\u01b0\u1ee3c ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng t\u1ea1m th\u1eddi; tuy nhi\u00ean, ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t cao s\u1ebd g\u00e2y t\u1eafc van v\u00e0 h\u01b0 h\u1ecfng tr\u1ee5c van. C\u1ea7n x\u00e1c nh\u1eadn tr\u01b0\u1edbc v\u1edbi nh\u00e0 s\u1ea3n xu\u1ea5t v\u1ec1 m\u1ee9c ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t t\u1ed1i \u0111a.<\/p>\n\n\n\n

Van \u0111i\u1ec1u khi\u1ec3n ki\u1ec3u \u1ed1ng b\u1ecdc: M\u0169i t\u00ean ch\u1ec9 h\u01b0\u1edbng l\u00e0m k\u00edn, v\u1edbi \u0111\u1ea7u v\u00e0o \u00e1p su\u1ea5t cao v\u00e0 \u0111\u1ea7u ra \u00e1p su\u1ea5t th\u1ea5p. Nghi\u00eam c\u1ea5m l\u1eafp \u0111\u1eb7t ng\u01b0\u1ee3c v\u00ec s\u1ebd l\u00e0m m\u1ea5t ho\u00e0n to\u00e0n kh\u1ea3 n\u0103ng l\u00e0m k\u00edn. <\/p>\n\n\n\n

Van \u0111i\u1ec1u khi\u1ec3n c\u1ea5u tr\u00fac \u0111\u1eb7c bi\u1ec7t: M\u0169i t\u00ean ch\u1ec9 h\u01b0\u1edbng l\u00e0m k\u00edn. Van n\u00e0y c\u00f3 th\u1ec3 duy tr\u00ec kh\u1ea3 n\u0103ng l\u00e0m k\u00edn t\u1ea1m th\u1eddi khi ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t th\u1ea5p, nh\u01b0ng s\u1ebd r\u00f2 r\u1ec9 nghi\u00eam tr\u1ecdng khi ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t t\u0103ng l\u00ean. C\u1ea7n ki\u1ec3m tra c\u00e1c th\u00f4ng s\u1ed1 \u00e1p su\u1ea5t l\u00e0m vi\u1ec7c tr\u01b0\u1edbc khi l\u1ef1a ch\u1ecdn.<\/p>\n\n\n\n

Van bi<\/h3>\n\n\n\n

Van bi n\u1ed5i s\u1eed d\u1ee5ng c\u01a1 ch\u1ebf l\u00e0m k\u00edn hai chi\u1ec1u ti\u00eau chu\u1ea9n, kh\u00f4ng c\u00f3 h\u01b0\u1edbng d\u00f2ng ch\u1ea3y c\u1ed1 \u0111\u1ecbnh. Van bi tr\u1ee5c xoay c\u00f3 k\u00fd hi\u1ec7u m\u0169i t\u00ean h\u1ed7 tr\u1ee3 l\u00e0m k\u00edn m\u1ed9t chi\u1ec1u, v\u00e0 c\u0169ng c\u00f3 c\u00e1c lo\u1ea1i van bi tr\u1ee5c xoay h\u1ed7 tr\u1ee3 l\u00e0m k\u00edn hai chi\u1ec1u.<\/p>\n\n\n

\n
\"Ch\u1ec9
Ch\u1ec9 d\u1eabn h\u01b0\u1edbng l\u1eafp \u0111\u1eb7t van<\/figcaption><\/figure>\n<\/div>\n\n\n

K\u1ebft th\u00fac b\u00e0i vi\u1ebft<\/h2>\n\n\n\n

C\u00e1c m\u0169i t\u00ean tr\u00ean van \u0111\u01b0\u1ee3c chia th\u00e0nh hai lo\u1ea1i: h\u01b0\u1edbng d\u00f2ng ch\u1ea5t l\u1ecfng v\u00e0 h\u01b0\u1edbng l\u00e0m k\u00edn. C\u00e1c m\u0169i t\u00ean ch\u1ec9 h\u01b0\u1edbng l\u00e0m k\u00edn cho bi\u1ebft ch\u1ea5t l\u1ecfng ch\u1ea3y t\u1eeb ph\u00eda \u00e1p su\u1ea5t cao sang ph\u00eda \u00e1p su\u1ea5t th\u1ea5p khi van \u0111\u00f3ng, do \u0111\u00f3, van m\u1ed9t chi\u1ec1u c\u00f3 c\u00e1c y\u00eau c\u1ea7u l\u1eafp \u0111\u1eb7t nghi\u00eam ng\u1eb7t.<\/p>\n\n\n\n

C\u00e1c van chuy\u00ean d\u1ee5ng cho thi\u1ebft b\u1ecb t\u00e1ch kh\u00ed, ch\u1eb3ng h\u1ea1n nh\u01b0 van chuy\u1ec3n m\u1ea1ch s\u00e0ng ph\u00e2n t\u1eed, van x\u1ea3 b\u01a1m oxy l\u1ecfng, van x\u1ea3 m\u00e1y n\u00e9n gi\u00e3n n\u1edf v\u00e0 van x\u1ea3 b\u01a1m d\u1ef1 ph\u00f2ng n\u1ed1i ti\u1ebfp, ph\u1ea3i \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n quy tr\u00ecnh th\u1ef1c t\u1ebf. Ngo\u1ea1i tr\u1eeb van m\u1ed9t chi\u1ec1u, vi\u1ec7c l\u1eafp \u0111\u1eb7t ng\u01b0\u1ee3c c\u00e1c van c\u00f3 m\u0169i t\u00ean ch\u1ec9 h\u01b0\u1edbng l\u00e0m k\u00edn s\u1ebd l\u00e0m h\u1ecfng tr\u1ef1c ti\u1ebfp c\u1ea5u tr\u00fac l\u00e0m k\u00edn. C\u1ea7n x\u00e1c nh\u1eadn h\u01b0\u1edbng l\u1eafp \u0111\u1eb7t \u0111\u00fang v\u1edbi c\u00e1c k\u1ef9 s\u01b0 quy tr\u00ecnh tr\u01b0\u1edbc khi thi c\u00f4ng.<\/p>\n\n\n\n

H\u00e3y h\u1ee3p t\u00e1c v\u1edbi m\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t van chuy\u00ean nghi\u1ec7p v\u00e0 \u0111\u00e1ng tin c\u1eady \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c nguy c\u01a1 ti\u1ec1m \u1ea9n, bao g\u1ed3m r\u00f2 r\u1ec9 v\u00e0 s\u1ef1 c\u1ed1 do l\u1eafp \u0111\u1eb7t van kh\u00f4ng \u0111\u00fang c\u00e1ch, t\u1eeb \u0111\u00f3 \u0111\u1ea3m b\u1ea3o to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng ch\u1ea5t l\u1ecfng v\u1eadn h\u00e0nh \u1ed5n \u0111\u1ecbnh trong th\u1eddi gian d\u00e0i. H\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng c\u00f4ng ngh\u1ec7 an to\u00e0n v\u00e0 \u1ed5n \u0111\u1ecbnh ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u00fang \u0111\u1eafn v\u00e0 l\u1eafp \u0111\u1eb7t ch\u00ednh x\u00e1c c\u00e1c lo\u1ea1i van ch\u1ea5t l\u01b0\u1ee3ng cao.<\/p>\n\n\n

\n
\"C\u00e0i
Ch\u1ec9 th\u1ecb h\u01b0\u1edbng van<\/figcaption><\/figure>\n<\/div>\n\n\n

Van XVS<\/a> C\u00f4ng ty ch\u00fang t\u00f4i chuy\u00ean nghi\u00ean c\u1ee9u, ph\u00e1t tri\u1ec3n v\u00e0 s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t c\u00e1c lo\u1ea1i van c\u00f4ng nghi\u1ec7p. Ch\u00fang t\u00f4i tu\u00e2n th\u1ee7 nghi\u00eam ng\u1eb7t c\u00e1c ti\u00eau chu\u1ea9n s\u1ea3n xu\u1ea5t v\u00e0 ki\u1ec3m \u0111\u1ecbnh trong n\u01b0\u1edbc c\u0169ng nh\u01b0 qu\u1ed1c t\u1ebf, th\u1ef1c hi\u1ec7n ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd to\u00e0n b\u1ed9 quy tr\u00ecnh s\u1ea3n xu\u1ea5t, bao g\u1ed3m \u0111\u00fac van, gia c\u00f4ng ph\u1ea7n l\u00e0m k\u00edn v\u00e0 ki\u1ec3m tra h\u01b0\u1edbng d\u00f2ng ch\u1ea3y t\u1ea1i nh\u00e0 m\u00e1y. Ch\u00fang t\u00f4i cung c\u1ea5p c\u00e1c lo\u1ea1i van c\u00f4ng nghi\u1ec7p c\u00f3 kh\u1ea3 n\u0103ng th\u00edch \u1ee9ng cao v\u1edbi nhi\u1ec1u \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c kh\u00e1c nhau, hi\u1ec7u su\u1ea5t l\u00e0m k\u00edn \u1ed5n \u0111\u1ecbnh v\u00e0 c\u00e1c d\u1ea5u hi\u1ec7u l\u1eafp \u0111\u1eb7t r\u00f5 r\u00e0ng.<\/p>\n\n\n\n

N\u1ebfu qu\u00fd v\u1ecb mu\u1ed1n tr\u00e1nh t\u00ecnh tr\u1ea1ng r\u00f2 r\u1ec9 b\u00ean trong v\u00e0 h\u01b0 h\u1ecfng van do l\u1eafp \u0111\u1eb7t sai h\u01b0\u1edbng, \u0111\u1ed3ng th\u1eddi nh\u1eadn \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n chuy\u00ean nghi\u1ec7p v\u1ec1 \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh, \u0111\u00e0o t\u1ea1o k\u1ef9 thu\u1eadt l\u1eafp \u0111\u1eb7t v\u00e0 d\u1ecbch v\u1ee5 h\u1eadu m\u00e3i to\u00e0n di\u1ec7n trong qu\u00e1 tr\u00ecnh mua s\u1eafm, xin vui l\u00f2ng li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i \u0111\u1ec3 h\u1ee3p t\u00e1c. \u3010H\u00e3y li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i ngay h\u00f4m nay<\/a> \u3011\u0111\u1ec3 nh\u1eadn b\u00e1o gi\u00e1 ch\u00ednh x\u00e1c, ph\u01b0\u01a1ng \u00e1n l\u1ef1a ch\u1ecdn t\u00f9y ch\u1ec9nh v\u00e0 d\u1ecbch v\u1ee5 tr\u1ecdn g\u00f3i bao g\u1ed3m t\u01b0 v\u1ea5n l\u1ef1a ch\u1ecdn van, giao h\u00e0ng v\u00e0 h\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt!<\/p>\n\n\n\n

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

Most installers take it for granted that the arrow on valve body only stands for medium flow direction. If valves are installed merely based on this misunderstanding, reverse installation will easily lead to internal leakage. Bi-directional sealing and clearance sealing valves have no flow arrows. However, arrows on valves with different structures carry totally different […]<\/p>\n","protected":false},"featured_media":570,"template":"","categories":[15],"class_list":["post-569","xvs_news","type-xvs_news","status-publish","has-post-thumbnail","hentry","category-tech-insights"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.xvs-valve.com\/vi\/wp-json\/wp\/v2\/xvs_news\/569","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xvs-valve.com\/vi\/wp-json\/wp\/v2\/xvs_news"}],"about":[{"href":"https:\/\/www.xvs-valve.com\/vi\/wp-json\/wp\/v2\/types\/xvs_news"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.xvs-valve.com\/vi\/wp-json\/wp\/v2\/media\/570"}],"wp:attachment":[{"href":"https:\/\/www.xvs-valve.com\/vi\/wp-json\/wp\/v2\/media?parent=569"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xvs-valve.com\/vi\/wp-json\/wp\/v2\/categories?post=569"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}