All-Rubber · Slow Close · Silent · Maintenance-Free

Duckbill Check Valves for Waste Water Drainage and Backflow Prevention

PN6~PN16, 150LB, JIS10K, sizes 3/4″ to 120″ (DN20~DN3000mm), available in EPDM, Neoprene, Viton, Hypalon, Buna-N, and more — no mechanical parts, corrosion-free, self-operating.

Overview

Duckbill check valve is also named rubber slow close check valve duckbill check valve, which has special structure like duckbill. It is one new water supply and drainage valve which has the function of discharge in positive direction while non-return in opposite direction. It can be widely applicable to be mounted on the discharge outlet of municipal, water works, waste water treatment projects to prevent of back flow, so that it has various advantages of slow close, silence, free maintenance and non-corrosive performance. Flowspec Luokai can manufacture the flanged duckbill check valve, slip-on duckbill check valve, inline duckbill check valve, etc. Flowspec Luokai can manufacture the duckbill check valve with materials of Pure Gum Rubber, Neoprene, Chlorobutyl, Buna-N, Polyurethane, Hypalon, Viton, EPDM, available with sizes of 3/4″ ~ 120″ (DN20~DN3000mm).

1. Features

Adopts all-rubber materials in which include reinforced fibers, which has simple structure, non-corrosive performance and no mechanical parts.
Having strong operating performance, which can provide efficient and silent operation without any more energy device, reducing operating costs.
Applicable to general operating conditions, and special conditions of wearing and corrosive mediums, such like water, sludge, and mud.
Having excellent effects of prevent of back flow.
Use differential pressure between its inside and outside to achieve open and close naturally, so that it’s the best choice of waste water drainage system and pipeline system.

2. Technical Specifications

PN6 / PN10 / PN16 / JIS10 / 150LB
Size: 3/4″ ~ 120″ (DN20~DN3000mm)
Materials: Pure Gum Rubber, Neoprene, Chlorobutyl, Buna-N, Polyurethane, Hypalon, Viton, EPDM