Straight Through Diaphragm Valve

Short Description:

Straight‑through diaphragm valves are mainly used in applications with high risk of clogging. The valve body adopts weir‑free straight‑through flow channel, which allows medium to pass through smoothl...

Product Name: Straight Diaphragm Valve
Valve Category: Diaphragm Valve
Brand: Yiluoke
Technical Data: DN15-DN600
Made In: China
Supplier: Xiamen Yiluoke Import and Export Trading Co., Ltd

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Product Detail

Straight‑through diaphragm valves are commonly used for slurries, sludge and media containing solid particles. Under such working conditions, reducing clogging risk is more important than precise flow control, which makes straight‑through design a better choice.

Working Principle of Straight Through Diaphragm Valves.webp

Structural Design

The straight‑through diaphragm valve has no weir inside, and the medium flows directly through the valve cavity. Thanks to this feature, it is suitable for viscous fluid, cement slurry and precipitable fluid. Compared with weir‑type diaphragm valve, straight‑through diaphragm valve requires longer diaphragm stroke, which limits the optional range of synthetic rubber materials for diaphragm.

1. Elastic sealing diaphragm serves as opening‑closing component to guarantee zero internal leakage.

2. Streamlined flow path brings low pressure loss.

3. No stuffing box structure, so there is no external leakage.

4. The diaphragm isolates valve body from bonnet. Parts above diaphragm including bonnet and stem are protected from medium corrosion.

5. Replaceable diaphragm reduces maintenance cost.

6. Test and inspection comply with BS6755 standard; lining layer adopts spark detection test.

Technical Parameters

Nominal Diameter	DN50‑DN400
Pressure Range	0.6MPa
Working Temperature	≤80℃
Valve Body Material	HT250, QT450, CF8, CF8M
Applicable Medium	Water, air, oil, corrosive medium
Operation Mode	Manual, Pneumatic, Electric

Parts Material

Model	Valve Body	Bonnet & Disc	Stem	Diaphragm	Handwheel
G46W‑10	Grey Cast Iron	Grey Cast Iron	Chrome Stainless Steel	EPDM	Malleable Cast Iron
G46J‑10	Grey Cast Iron(Lined Hard Rubber)	Grey Cast Iron	Chrome Stainless Steel	EPDM	Malleable Cast Iron
G46J‑10C	Cast Steel Lined Butyl Rubber	Cast Steel	Chrome Stainless Steel	EPDM	Malleable Cast Iron
G46J‑10P	Stainless Steel Lined Butyl Rubber	Stainless Steel	Chrome Stainless Steel	EPDM	Malleable Cast Iron

Performance Specification

Nominal Pressure PN(MPa)	Body Test Pressure(MPa)	Sealing Test Pressure(MPa)	Working Pressure DN25‑DN150(MPa)	Working Pressure DN200(MPa)	Applicable Temperature(℃)	Applicable Medium
1.0	1.5	1.1	1.0	0.6	≤100	G46J/W: Non‑corrosive fluid; G46W/J: General corrosive fluid

Application Fields

Straight‑through diaphragm valves are widely used in biopharmaceutical, food industry, industrial water treatment for power plant, chemical industry, electroplating and semiconductor wafer production. They are suitable for conveying corrosive and viscous media such as slurry, food, pharmaceutical products and fibrous adhesive liquid. Applicable temperature varies according to lining and diaphragm materials.