{"id":14759,"date":"2026-10-01T04:19:57","date_gmt":"2026-10-01T04:19:57","guid":{"rendered":"https:\/\/anphuthanhvalve.com\/?post_type=product&p=14759"},"modified":"2026-10-01T09:21:17","modified_gmt":"2026-10-01T09:21:17","slug":"btl-non-rising-stem-gate-valve-model-z45x-10-16","status":"publish","type":"product","link":"https:\/\/anphuthanhvalve.com\/en\/btl-non-rising-stem-gate-valve-model-z45x-10-16\/","title":{"rendered":"BTL NON-RISING STEM GATE VALVE| MODEL: Z45X-10\/16"},"content":{"rendered":"

The BTL handwheel-operated non-rising stem gate valve, Model Z45X-10\/16, is an ideal solution for underground pipelines and installations with limited space. Unlike the rising stem gate valve, the stem of this valve sits entirely inside the valve body and does not rise or lower during operation. This design saves a great deal of installation space, making the valve well suited to underground valve pits, technical basements, and pipelines running close to building ceilings.<\/p>\n

\"Van
BTL Non-Rising Stem Gate Valve, Model Z45X-10\/16<\/figcaption><\/figure>\n

Construction of the BTL Z45X-10\/16 non-rising stem gate valve<\/h2>\n

The BTL non-rising stem gate valve has a distinctive design in which the threaded stem is not exposed. When the valve is opened or closed, the stem simply rotates in place without moving up or down.<\/p>\n

The Z45X-10\/16 consists of the following main components:<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n
\n

No.<\/strong><\/p>\n<\/td>\n

\n

Component<\/strong><\/p>\n<\/td>\n

\n

Material<\/strong><\/p>\n<\/td>\n

\n

Function<\/strong><\/p>\n<\/td>\n<\/tr>\n

\n

1<\/p>\n<\/td>\n

\n

Body<\/p>\n<\/td>\n

\n

Cast iron\u00a0<\/p>\n<\/td>\n

\n

Main pressure-bearing shell, with flanged ends for pipeline connection<\/p>\n<\/td>\n<\/tr>\n

\n

2<\/p>\n<\/td>\n

\n

Wedge\/Disc<\/p>\n<\/td>\n

\n

Ductile iron GGG50 + EPDM<\/p>\n<\/td>\n

\n

Flow-blocking disc, fully encapsulated in EPDM rubber (resilient seated) to seal the entire flow cross-section<\/p>\n<\/td>\n<\/tr>\n

\n

3<\/p>\n<\/td>\n

\n

Stem<\/p>\n<\/td>\n

\n

Stainless steel<\/p>\n<\/td>\n

\n

Drive shaft, threaded in a fixed position inside the valve body, does not extend outward during operation<\/p>\n<\/td>\n<\/tr>\n

\n

4<\/p>\n<\/td>\n

\n

Gasket<\/p>\n<\/td>\n

\n

EPDM<\/p>\n<\/td>\n

\n

Seals the mating surfaces between the body and the bonnet<\/p>\n<\/td>\n<\/tr>\n

\n

5<\/p>\n<\/td>\n

\n

Bonnet<\/p>\n<\/td>\n

\n

Ductile iron GGG50<\/p>\n<\/td>\n

\n

Seals the body cavity and holds the stem in position inside<\/p>\n<\/td>\n<\/tr>\n

\n

6<\/p>\n<\/td>\n

\n

Bolts<\/p>\n<\/td>\n

\n

Carbon steel Gr. 8.8<\/p>\n<\/td>\n

\n

Connect the bonnet to the body; higher strength than ordinary carbon steel (grade 8.8)<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

Cap<\/p>\n<\/td>\n

\n

Cast iron<\/p>\n<\/td>\n

\n

Protective cover for the stem top, connected to the handwheel<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Dimension table of the BTL Z45X-10\/16 non-rising stem gate valve<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n

DN<\/strong><\/p>\n<\/td>\n

\n

L (mm)<\/strong><\/p>\n<\/td>\n

\n

D (PN10\/PN16 – mm)<\/strong><\/p>\n<\/td>\n

\n

C (PN10\/PN16 – mm)<\/strong><\/p>\n<\/td>\n

\n

b (PN10\/PN16 – mm)<\/strong><\/p>\n<\/td>\n

\n

n-d (PN10 \/ PN16)<\/strong><\/p>\n<\/td>\n

\n

H (Height- mm)<\/strong><\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

178<\/p>\n<\/td>\n

\n

165<\/p>\n<\/td>\n

\n

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

\n

19<\/p>\n<\/td>\n

\n

4 – 19<\/p>\n<\/td>\n

\n

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

\n

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

\n

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

\n

185<\/p>\n<\/td>\n

\n

145<\/p>\n<\/td>\n

\n

19<\/p>\n<\/td>\n

\n

4 – 19<\/p>\n<\/td>\n

\n

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

\n

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

\n

203<\/p>\n<\/td>\n

\n

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

\n

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

\n

19<\/p>\n<\/td>\n

\n

4 – 19 \/ 8 – 19<\/p>\n<\/td>\n

\n

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

\n

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

\n

229<\/p>\n<\/td>\n

\n

220<\/p>\n<\/td>\n

\n

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

\n

19<\/p>\n<\/td>\n

\n

8 – 19<\/p>\n<\/td>\n

\n

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

\n

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

\n

254<\/p>\n<\/td>\n

\n

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

\n

210<\/p>\n<\/td>\n

\n

19<\/p>\n<\/td>\n

\n

8 – 19<\/p>\n<\/td>\n

\n

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

\n

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

\n

267<\/p>\n<\/td>\n

\n

285<\/p>\n<\/td>\n

\n

240<\/p>\n<\/td>\n

\n

19<\/p>\n<\/td>\n

\n

8 – 23<\/p>\n<\/td>\n

\n

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

\n

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

\n

292<\/p>\n<\/td>\n

\n

340<\/p>\n<\/td>\n

\n

295<\/p>\n<\/td>\n

\n

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

\n

8 – 23 \/ 12 – 23<\/p>\n<\/td>\n

\n

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

\n

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

\n

330<\/p>\n<\/td>\n

\n

405<\/p>\n<\/td>\n

\n

350 \/ 355<\/p>\n<\/td>\n

\n

22<\/p>\n<\/td>\n

\n

12 – 23 \/ 12 – 28<\/p>\n<\/td>\n

\n

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

\n

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

\n

356<\/p>\n<\/td>\n

\n

460<\/p>\n<\/td>\n

\n

400 \/ 410<\/p>\n<\/td>\n

\n

24.5<\/p>\n<\/td>\n

\n

12 – 23 \/ 12 – 28<\/p>\n<\/td>\n

\n

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

\n

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

\n

381<\/p>\n<\/td>\n

\n

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

\n

460 \/ 470<\/p>\n<\/td>\n

\n

26.5<\/p>\n<\/td>\n

\n

16 – 23 \/ 16 – 28<\/p>\n<\/td>\n

\n

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

\n

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

\n

406<\/p>\n<\/td>\n

\n

580<\/p>\n<\/td>\n

\n

515 \/ 525<\/p>\n<\/td>\n

\n

28<\/p>\n<\/td>\n

\n

16 – 28 \/ 16 – 31<\/p>\n<\/td>\n

\n

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

\n

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

\n

432<\/p>\n<\/td>\n

\n

640<\/p>\n<\/td>\n

\n

565 \/ 585<\/p>\n<\/td>\n

\n

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

\n

20 – 28 \/ 20 – 31<\/p>\n<\/td>\n

\n

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

\n

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

\n

457<\/p>\n<\/td>\n

\n

670 \/ 715<\/p>\n<\/td>\n

\n

620 \/ 650<\/p>\n<\/td>\n

\n

26.5 \/ 31.5<\/p>\n<\/td>\n

\n

20 – 28 \/ 20 – 34<\/p>\n<\/td>\n

\n

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

\n

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

\n

508<\/p>\n<\/td>\n

\n

780 \/ 840<\/p>\n<\/td>\n

\n

725 \/ 770<\/p>\n<\/td>\n

\n

30 \/ 36<\/p>\n<\/td>\n

\n

20 – 31 \/ 20 – 37<\/p>\n<\/td>\n

\n

1190<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Operating characteristics and installation locations of the non-rising stem gate valve<\/h2>\n

Characteristics of the BTL non-rising stem gate valve<\/h3>\n

Unlike the rising stem valve, whose drive thread is located outside, the non-rising stem gate valve<\/a> has its thread fully inside the valve cavity, immersed in the medium. When the handwheel is turned, the stem only rotates in place rather than moving up and down. The threaded motion takes place directly where the stem engages the wedge, pulling the wedge up or pushing it down to open or close the flow.<\/p>\n

Because the drive thread is in direct contact with the medium, this component is prone to corrosion, so the stem is usually made of stainless steel. In addition, non-rising stem valves are harder to lubricate and maintain than rising stem valves. This is a technical trade-off made in exchange for a compact design that optimizes space.<\/p>\n

Furthermore, the fully EPDM-encapsulated wedge allows the valve to seal tightly and quietly and to prevent leakage effectively, without depending on the machining precision of a conventional metal seat.<\/p>\n

\"Van
Non-rising stem gate valves are commonly installed in space-restricted locations<\/figcaption><\/figure>\n

Suitable installation locations<\/h2>\n

Since no clearance is needed above the valve for a rising stem, the BTL non-rising stem gate valve is suitable for:<\/p>\n