Flanged Ball Check Valve
Description Ball check valves contain a ball that sits on the seat, which has only one through-hole. The ball has a slightly larger diameter than that of the through-hole (seat). When the pressure behind the seat exceeds that above the ball, liquid is allowed to flow through the valve. But once the pressure above the ball exceeds the pressure below the seat, the ball returns to rest in the seat, forming a seal that prevents backflow. The ball moves up and down inside the valve depending on the flow and seals against the machined seat when no flow or reverse flow occurs and seals against the seat to stop the reverse flow. Ball check valves are typically preferred for use in pumping stations as they are self-cleaning as the ball rotates during the operation and are vertically maintenance-free. IVALVE offers both flange and thread connections for the Ball Check Valves.

Threaded Ball Check Valve
Description  Ball check valves contain a ball that sits on the seat, which has only one through-hole. The ball has a slightly larger diameter than that of the through-hole (seat). When the pressure behind the seat exceeds that above the ball, liquid is allowed to flow through the valve. But once the pressure above the ball exceeds the pressure below the seat, the ball returns to rest in the seat, forming a seal that prevents backflow. The ball moves up and down inside the valve depending on the flow and seals against the machined seat when no flow or reverse flow occurs and seals against the seat to stop the reverse flow. Ball check valves are typically preferred for use in pumping stations as they are self-cleaning as the ball rotates during the operation and are vertically maintenance-free.Ocean offers both flange and thread connections for the Ball Check Valves.

Wafer Check Valve
Description Dual plate wafer check valves, have two springs loaded half-moon shaped discs that rotate around their shaft. They are designed to automatically prevent back-flow in systems where it is desirable to permit flow in one direction and prevent flow in the opposite direction.

Swing Check Valve
Swing check valve is mounted with a disc that swings on a hinge or shaft. The disc swings off the seat to allow forward flow and when the flow is stopped, the disc swings back onto the seat to block reverse flow.  Ocean swing check valves are available in both resilient and metal sealing. It’s normally recommended for water and wastewater systems applications because of the simple construction, low pressure drop across the valve, and field service ability.

Tilting Disc Check Valve

Silent Check Valve
Description Silent check valves, also known as non-slam check valves and spring-assisted check valves reduce or eliminate water hammer and its effects. Water hammer refers to the high-pressure shock waves that occur when the flow of fluid abruptly stops (due to pump shut down or a valve disc quickly closing) in a piping system. When water hammer occurs, the resulting flow reversal places severe stress on the pipe, endangering its structural integrity, and opening it to potential rupture and damage. To control water hammer and reverse flow, the use of silent check valves is recommended. When the source moving the fluid shuts down and the forward flow of the fluid decreases, the specially designed stainless steel spring action of the silent check valve controls the valve disc closure to occur prior to flow reversal. This spring assist insures that the valve does not slam shut, and the occurrence of water hammer is eliminated.

Double Eccentric Butterfly Valve
The center line of the disc rotation is horizontally and vertically offset from the body seat. This high-performance designeliminates“seat set” compression while the valve is in the open position.Compression on the seal is released after only a few degrees of opening which reduces friction and wear. This makes the valve ideal for modulation or in the open position for extended periods of time.  Dry Disc Hub  The advanced dry disc hub and shaft design is achieved through 10 O-Ring seals on both the upper and lower shafts. This prevents ground water and line media from entering the journal areas, resulting in ease of operation and minimal torque for many years.  Engineered Linings and Coatings  The Ductile Iron body comes electrostatic applied Fusion Bonded Epoxy coating.Testing is performed to ensure the valve meets the most stringent coating thickness and porosity requirements.  

Double Flange Concentric Butterfly Valve
Description Flanged Centric type Butterfly Valve is usually used water supply and drainage, gas pipeline for the temperature ≤80℃, nominal pressure ≤ 1.6Mpa to regulate the flow and cut off the fluid role. Range:DN50-DN1200 Connection type--Flange Working pressure:PN10/PN16 Temperature:-10-80℃ Fusion bonded epoxy coating

Lug Type Butterfly Valve
1. Long service life with reliable seal and without frequent maintenance. 2. Pressure Loss Too much pressure loss will bring increased cost of correlative energy. Butterfly valve have flow characteristics three times better than globe valve, and about 75% of a same size gate valve. 3. Multi-Function Butterfly valve can be used for on/off service and throttling. They are superior in Multi-function as compared to gate valves. Butterfly valve can be widely used in chemical field due to trim options and choice of elastomeric liner. 4. Weight Butterfly valve have feature of light in weight and small in size, for example, weight and size of a 10” butterfly valve are 1/9 and 1/6 of a 10” gate valve. So, butterfly valve is easy to be installed and saves cost of piping system. 5. Bubble Tight Butterfly valve with resilient seat design can be bubble tight as compared to metal seated gate or globe valves. 6. Easy of operation Butterfly valve offer 90-degree open to close.

Wafer Type Butterfly Valve
1. Long service life with reliable seal and without frequent maintenance. 2. Pressure Loss Too much pressure loss will bring increased cost of correlative energy. Butterfly valve have flow characteristics three times better than globe valve, and about 75% of a same size gate valve. 3. Multi-Function Butterfly valve can be used for on/off service and throttling. They are superior in Multi-function as compared to gate valves. Butterfly valve can be widely used in chemical field due to trim options and choice of elastomeric liner. 4. Weight Butterfly valve have feature of light in weight and small in size, for example, weight and size of a 10” butterfly valve are 1/9 and 1/6 of a 10” gate valve. So, butterfly valve is easy to be installed and saves cost of piping system. 5. Bubble Tight Butterfly valve with resilient seat design can be bubble tight as compared to metal seated gate or globe valves. 6. Easy of operation Butterfly valve offer 90-degree open to close.

triple function Double Orifice Air Valve
triple function Double Orifice Air Valve ▪ discharge large air flow from water pipeline ▪ admit large air flow into water pipeline ▪ purge entrapped air from pipeline under pressure Features: • Flow Media – Clean Water , air • Applications – Water systems, firefighting and irrigation system • All uncoated metal is high grade stainless steel • Safe operation • Little maintenance • Effective corrosion protection • No Arms or levers -- prevents vibrating, bending of the float • Smoth cage outside of float to keep float moving in guide rail • Bottom rubber buffer for collision prevention • Fully expoxy prainting coated inside and outside 250㎛Air Release Simple Level Type. • It can eliminate the gas in the pipeline, reduce the resistance and save energy. • Float ball is made of ABS • When the pipeline is under negative pressure,the product can automatically suck in air to prevent the pipeline from breaking.

Single Orifice Air Release Valve
1. Design according to BS EN 1074-4:2000 2. Flange according to EN 1092-2:1997 3. Testing according to EN 12266-1:2012 Working pressure: 16kg/cm3 Shell test pressure: 25kg/cm3 Seat test pressure: 18kg/cm3 4. Media: water 5. External and internal coating:100% fusion-bonded epoxy 6. SS304, 316 bolts/nuts/washers are available on request