Product Overview

CovCam khwb cia hlau viav vias kos Valve is a reliable, automatic non-return valve designed to prevent reverse flow in water, dej khib nyiab, thiab industrial piping systems. Featuring a robust cast iron or ductile iron body with a hinged disc that swings freely on a pin, this valve opens with forward flow and closes automatically when flow stops or reverses — protecting pumps, compressors, and other equipment from damaging backflow. Available with EPDM soft seal (0°C to +80°C) for bubble-tight shut-off or metal-to-metal seal (-10°C to +350°C) for high-temperature applications. The flanged ends conform to BS EN 1092-2:1997 qauv, kom ntseeg tau tias kev sib raug zoo nrog cov kav dej thoob ntiaj teb. With sizes from 2″ to 24″ (DN50 to DN600) and pressure ratings PN10/PN16, this valve is suitable for a wide range of applications including drinking water, dej & dej ntws, wastewater treatment, kev ywg dej, HVAC, fire protection, and chemical & energy industries. The fusion-bonded epoxy coating provides superior corrosion protection for long service life. Nrog OEM / ODM kev them nyiaj yug, it is the trusted choice for engineers and plant operators worldwide.

Cast iron swing check valve

Technical Specifications

Cast iron swing check valve

Cov yam ntxwv tseem ceeb

1. Swing Check Design – Low Pressure Drop
2. Dual Seal Options – Soft Seal & Metal Seal
3. Robust Ductile Iron Disc – Durable & Corrosion Resistant
4. Fusion-Bonded Epoxy Coating – Superior Corrosion Protection
5. BS EN 12334 Compliant – International Standard
6. Wide Temperature Range – -10°C to +350°C

Working Principle

The swing check valve operates through a simple yet reliable mechanism:

• 1. Forward Flow (Valve Open): When upstream pressure exceeds downstream pressure, the disc swings open on its hinge pin, allowing flow to pass through with minimal resistance.
• 2. Reverse Flow or Stop (Valve Closed): When flow stops or reverses, gravity and backflow pressure cause the disc to swing back onto the seat, creating a tight seal.
• 3. Horizontal Installation: Swing check valves must be installed horizontally (or in slightly sloping lines) to allow gravity to assist in closing the disc.

Cast iron swing check valve

Daim ntawv thov

1. Kev Siv Dej & Distribution
2. Wastewater Treatment
3. Kev Tiv Thaiv Hluav Taws Xob
4. Cov txheej txheem kev lag luam

Packing thiab Shipping

Packing nyob ntawm seb hom khoom thiab ntau npaum li cas. Options include wooden crates or carton boxes with proper protection for flange faces. Kev xa khoom tuaj yeem npaj los ntawm hiav txwv, txoj kev tsheb ciav hlau, huab cua, los yog raws li tus neeg siv khoom thov.

Tuam txhab Profile

Luoyang Datang Energy Tech Co., Ltd., Ltd yog tus kws tshaj lij kev lag luam valve tsum, dedicated to providing reliable flow control solutions for water treatment, HVAC, fire protection, thiab industrial piping systems thoob ntiaj teb. All products are manufactured to international standards with ISO 9001 ntawv pov thawj. Nrog dhau 10 xyoo ntawm kev paub, ib tug niaj hnub chaw ntawm 80,000 m² os, thiab 200+ cov neeg ua haujlwm tshaj lij, peb pab cov neeg muas zaub hauv 10+ lub teb chaws nrog cov khoom zoo, kev sib tw nqi, thiab txhim khu kev qha xa khoom.

Cast iron swing check valve

Cov nqe lus them nqi

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FAQs | Frequently Asked Questions

Q1: Can a swing check valve be installed vertically?

A: Tsis muaj. Swing check valves must be installed horizontally (or in slightly inclined piping) because gravity is required for the disc to return to the seat when flow stops. Vertical installation prevents the disc from closing completely, resulting in backflow.

Q2: What is the difference between soft-seated and metal-seated valves?

A: Soft-seated (EPDM) valves provide zero-leakage (bubble-tight) shut-off and operate within a temperature range of 0°C to +80°C; they are suitable for water, sewage, and mild chemicals. Metal-seated (metal-to-metal) valves operate between -10°C and +350°C and are suitable for steam, high-temperature fluids, and abrasive media, though they have a slightly higher leakage rate (Class IV).

Q3: What is the maximum working pressure for this valve?

A: The standard configuration supports a maximum working pressure of PN10/PN16. Higher pressure ratings are available upon request; please contact our sales team for more information.

Q4: What is the difference between a swing check valve and a lift check valve?

A: Swing check valves use a disc that swings on a hinge; they offer low pressure drop (approx. 0.5 psi), must be installed horizontally, and are suitable for large-bore and low-pressure-drop applications. Lift check valves use a disc that lifts vertically; they offer superior sealing but have a higher pressure drop and can be installed either vertically or horizontally.

Cast iron swing check valve