Page Category: Diaphragm Valves
Page Category: Diaphragm Valves
To prevent unauthorized operation, the valve handwheel can be padlocked in the open or closed position.
Ideal Applications Include:
Chemical Processing, Water & Wastewater, Landfills, Irrigation, Food Processing, Mining
Page Category: Diaphragm Valves
A chain operator is designed to be mounted to the handwheel of a diaphragm valve. The chain operator is used for operating the valve in an overhead location where the hanging looped chain is accessible. A lock-link looped chain is fed through one side of the operator and out the other, then joined continuous by using the Masterlink or by mechanical fastening. By pulling on the chain, the valve handwheel is activated to turn the valve stem either counter-clockwise to open or clockwise to close the valve. Diaphragm valves for use with chain operators must be molded body flanged. Chain operators can be factory or field installed on Asahi/America Type-14/15/G 1/2″ – 10″ flanged-model diaphragm valves.
Page Category: Diaphragm Valves
A 2″ square operating nut is designed to be installed directly to the valve stem, replacing the standard handwheel. This operating nut permits opening and closing of valves using an industry standard extended T-bar wrench or key. This type of option is most typically used in below grade, out of physical reach, locations. The 2″ square operating nut is an industry standard accessory that can be field installed on all Asahi/America 1/2” – 4” Type-14, 5” – 6” Type-15, and 8” – 10” Type-G manual diaphragm valves.
- 6061 Aluminum with anodized finish
Diaphragm Valve Options
Page Category: Diaphragm Valves
Asahi/America’s TI diaphragm valves are specifically designed for processing chlorines and chlorates in chlor-alkali and caustic soda production plants. The valve features an injection-molded, solid PVDF flanged body with a strong and durable PPG bonnet. This field proven and industry preferred valve also boasts features that help eliminate the corrosion of stainless steel fasteners common in such applications. The Ti Type-14/15 diaphragm valve is designed with a unique three-layer construction: an EPDM backing cushion; a PVDF gas barrier; and a layer of PTFE – the only wetted part. Superior corrosion protection is achieved by offering a palladium-titanium diaphragm insert that connects the diaphragm to the valve compressor via a palladium-titanium stem connection joint. Light weight and corrosion resistant titanium bolts, nuts, washers, studs and body inserts sandwich the diaphragm between the body and bonnet creating a reliable seal.
Available in sizes of 1/2″ through 4″, the TI is suitable for temperatures of up to 250° F, and working pressures of up to 150psi. It can be pneumatically or electrically actuated.
Resources:
Data Sheet
Specification
Ideal Applications Include:
Corrosive environments, mining, throttling, slurry lines, chemical processing, bleach plants, aquariums, water treatment, landfills, swimming pools, semiconductor manufacturing
Specifications:
Sizes:
1/2″ – 6″
Body:
PVDF
Bonnet Material:
PPG
Diaphragm:
Layer EPDM/PVDF/PTFE with Palladium Titanium Insert
Fasteners:
Titanium
Joint (1/2” – 2”):
Palladium Titanium
Compressor Pin (2-1/2” – 6”):
Palladium Titanium
Compressor Insert (2-1/2” – 6”):
Palladium Titanium
Compressor Nut (6”):
Palladium Titanium
- All titanium body to bonnet fasteners
- Palladium titanium compressor joint and diaphragm insert
- Bubble tight sealing even in applications such as slurries or suspended particles, bonnet seals to protect internals from corrosive environments, built-in travel stop to prevent over-tightening or compressive strain on diaphragm, position indicator at top of valve, PVDF gas barrier (protects EPDM backing from gas permeation) standard on all valve with PTFE diaphragm
- Durable corrosion resistant PPG bonnet
- Solid molded PVDF flanged body
- 3-Layer EPDM/PVDF/PTFE diaphragm
- For 1/2″ – 6″ TI diaphragm valves, contact factory
Page Category: Diaphragm Valves
Asahi/America’s Type-G flanged diaphragm valves are multiturn valves that are good for flow control and use with viscous/slurry lines due to their high resistance to clogging. The Type-G is the largest of the Asahi diaphragm valves, available only in 8″ and 10″ sizes with flanged end connections.
Resources:
Data Sheet
Specifications
Ideal Applications Include:
Throttling, slurry lines, chemical processing, bleach plants, aquariums, mining, water treatment, landfills, swimming pools, semiconductor manufacturing
Specifications:
Sizes:
8″ – 10″
Body Materials:
PVC, PP, and PVDF
Bonnet Materials:
PVC, PP, PPG and PVDF
Diaphragm:
EPDM and 3-Layer EPDM/PVDF/PTFE
Also available in Nitrile
- Bubble tight sealing even in applications such as slurries or suspended particles, bonnet seals to protect internals from corrosive environments, built-in travel stop to prevent over-tightening or compressive strain on diaphragm, position indicator at top of valve, PVDF gas barrier (protects EPDM backing from gas permeation) standard on all valve with PTFE diaphragm.
- Rugged body and bonnet of solid thermoplastic for maximum corrosion resistance
- Weir design for excellent throttling
- Bubble-tight sealing, even in applications such as slurries or suspended particles
- Bonnet seals to protect internals from corrosive environments
- Built-in travel stop to prevent diaphragm from being over-tightened
- Indicator at the top for valve position
- PVDF gas barrier, which protects backing cushion from gas permeation, is standard for all valves with PTFE diaphragm
- For 8″ – 10″ diaphragm valves, contact factory
Page Category: Diaphragm Valves
Asahi/America’s Type-15 diaphragm valve is a multiturn valve that is good for flow control and use with viscous/slurry lines due to their high resistance to clogging. These valves have a uniquely designed body and bonnet, as well as a diaphragm with new sealing designs, by computer aided analysis for superior sealing.
Resources:
Data Sheet
Specifications
Ideal Applications Include:
Throttling, slurry lines, chemical processing, bleach plants, aquariums, mining, water treatment, landfills, swimming pools, semiconductor manufacturing
Specifications:
Sizes:
5″ – 6″
Body:
PVC, PP, PVDF
Bonnet:
PVC, PP, PPG, PVDF
Diaphragm:
EPDM, 3-Layer EPDM/PVDF/PTFE, Nitrile
- Bubble tight sealing even in applications such as slurries or suspended particles, bonnet seals to protect internals from corrosive environments, built-in travel stop to prevent over-tightening or compressive strain on diaphragm, position indicator at top of valve, PVDF gas barrier (protects EPDM backing from gas permeation) standard on all valve with PTFE diaphragm.
- Flanged face-to-face dimensions are equivalent to those of Type-G diaphragm valve
- Rugged body and bonnet are of solid thermoplastic for maximum corrosion resistance
- Bubble-tight sealing, even in applications such as slurries or suspended particles
- Weir design for excellent throttling
- Uniquely designed body and bonnet together with diaphragms of new sealing designs by the state-of-the-art computer aided analysis for superior sealing
- Bonnet seals to protect internals from corrosive environments
- Built-in travel stop to prevent diaphragm from being over-tightened
- Indicator at the top for valve position and prevention of over-tightening
- PVDF gas barrier, which protects EPDM backing cushion from gas permeation, is standard for all valves with PTFE diaphragm
- For 5″ – 6″ diaphragm valves, contact factory
Page Category: Diaphragm Valves
The type-14 diaphragm valve has been specified with confidence since 2002. Design features include industry-leading body-to-bonnet sealing performance isolating the bonnet components from the media, high visibility position indication with built-in travel stop providing visual confirmation while minimizing compressive strain across the diaphragm, and smooth ergonomic handle operation. Bubble-tight sealing can be achieved even in tough applications containing suspended particles or slurries. Controlled flow characteristics are achieved by way of an internal weir design, requiring fluid to flow over the raised center section of the body where the body and diaphragm meet. The molded thermoplastic valve body and diaphragm are the only components in contact with the media.
Asahi’s type-14 diaphragm valve features a three-layer EPDM/PVDF/PTFE diaphragm providing a gas barrier protecting the bonnet internals from aggressive off-gassing chemicals such as sodium hypochlorite. The Type-14 diaphragm valve body is of one-piece molded flanged construction, which provides a shorter overall dimension and fabrication-free body construction.
For maximum corrosion resistance, the type-14 diaphragm valve’s body and bonnet are manufactured from solid thermoplastic materials. The type-14 diaphragm valve can be pneumatically or electrically actuated.
Resources:
Data Sheets
- Data sheet – Type-14 Flanged Diaphragm Valve
- Data sheet – Type-14 Diaphragm Valve for Sodium Hypochlorite
Specification
Ideal Applications Include:
Throttling, slurry lines, chemical processing, bleach plants, aquariums, mining, water treatment, landfills, swimming pools, semiconductor manufacturing
Certifications:
Specifications:
Sizes:
1/2″ – 4″
Body Materials:
PVC, CPVC, PP and PVDF
Bonnet Materials:
PVC, PP, PPG and PVDF
Diaphragms:
EPDM and three-layer EPDM/PVDF/PTFE
Also available in Nitrile and FKM
End Connection:
Flanged
Operator:
Handwheel
- Bubble tight sealing even in applications such as slurries or suspended particles, bonnet seals to protect internals from corrosive environments, built-in travel stop to prevent over-tightening or compressive strain on diaphragm, position indicator at top of valve, PVDF gas barrier (protects EPDM backing from gas permeation) standard on all valve with PTFE diaphragm.
- Flanged (ANSI) face-to-face dimensions are equivalent to most commonly used metallic valves
- Rugged body and bonnet are of solid thermoplastic for maximum corrosion resistance
- Uniquely designed body and bonnet together with diaphragms of new sealing designs by computer dynamic analysis for superior sealing
- Weir design for excellent throttling
- Bubble-tight sealing, even in applications such as slurries or suspended particles
- Bonnet seals to protect internals from corrosive environments
- Built-in travel stop to prevent over-tightening or compressive strain on diaphragm
- Integrally molded bottom stand for simple yet firm panel mounting
- Indicator at the top for indication of valve position and prevention of over-tightening
- PVDF gas barrier, which protects EPDM backing from gas permeation, is standard for all valves with PTFE Diaphragm
- Low profile
- Bayonet structure to connect compressor and diaphragm – easy diaphragm replacement
Page Category: Diaphragm Valves
The type-14 diaphragm valve has been specified with confidence since 2002. Design features include industry-leading body-to-bonnet sealing performance isolating the bonnet components from the media, high visibility position indication with built-in travel stop providing visual confirmation while minimizing compressive strain across the diaphragm, and smooth ergonomic handle operation. Bubble-tight sealing can be achieved even in tough applications containing suspended particles or slurries. Controlled flow characteristics are achieved by way of an internal weir design, requiring fluid to flow over the raised center section of the body where the body and diaphragm meet. The molded thermoplastic valve body diaphragm and end connector O-rings are the only components in contact with the media.
Asahi’s type-14 diaphragm valve features a three-layer EPDM/PVDF/PTFE diaphragm providing a gas barrier protecting the bonnet internals from aggressive off-gassing chemicals such as sodium hypochlorite. The Type-14 true-union diaphragm valve provides union end connections for simplified installation and maintenance. End connector O-rings are matched to diaphragm materials for ultimate chemical compatibility.
For maximum corrosion resistance, the type-14 diaphragm valve’s body and bonnet are manufactured from solid thermoplastic materials. The type-14 diaphragm valve can be pneumatically or electrically actuated.
Resources:
Data Sheets
- Data sheet – Type-14 True Union Diaphragm Valve
- Data sheet – Type-14 Diaphragm Valve for Sodium Hypochlorite
Specification
Ideal Applications Include:
Throttling, slurry lines, chemical processing, bleach plants, aquariums, mining, water treatment, landfills, swimming pools, semiconductor manufacturing
Certifications:
Specifications:
Sizes:
1/2″ – 2″
Body Materials:
PVC, CPVC, PP and PVDF
Bonnet Materials:
PVC, PP, PPG and PVDF
End Connectors:
PVC, CPVC: IPS Socket or threaded
PP, PVDF: IPS & metric (DIN) Socket, threaded, butt
Diaphragms:
EPDM and three-layer EPDM/PVDF/PTFE
Also available in Nitrile and FKM
Operator:
Handwheel
- Bubble tight sealing even in applications such as slurries or suspended particles, bonnet seals to protect internals from corrosive environments, built-in travel stop to prevent over-tightening or compressive strain on diaphragm, position indicator at top of valve, PVDF gas barrier (protects EPDM backing from gas permeation) standard on all valve with PTFE diaphragm.
- True union design permits installation or repairs without expanding pipeline
- Rugged-square body and bonnet are of solid thermoplastic for maximum corrosion resistance
- Uniquely designed body and bonnet together with diaphragms of new sealing designs by the state-of-the-art computer aided analysis for superior sealing
- Weir design for excellent throttling
- Full-vacuum rated
- Bonnet seals to protect internals from corrosive environments
- Adjustable travel stop to prevent diaphragm from being over-tightened
- Bayonet structure to connect compressor and diaphragm for quick maintenance
- Integrally molded bottom stand for simple yet firm panel mounting
- Indicator at the top for valve position
- PVDF gas barrier, which protects EPDM backing cushion from gas permeation, is standard for all valves with PTFE diaphragm
- Low profile
