Watson WPS-CA/EP76 & WPS-CA/TG76
DN76 Pulse Valve Diaphragm Repair Kit
A premium 3-inch diaphragm replacement assembly for Watson pulse valves, engineered with synthetic rubber and a reinforced metal frame for dependable sealing, high-cycle pulsing, and industrial baghouse maintenance.
Technical Parameters
Core operating specification.
Compatible ModelsWPS-CA/EP76 and WPS-CA/TG76
Compatible BrandWatson (Canada) pulse valves
Nominal Size3 inch / DN76
Material ConstructionSynthetic rubber with reinforced metal frame layer
Operating Pressure0.2–0.7 MPa
Service LifeGuaranteed ≥1 million cycles / 5 years
ResistanceWear, impact, heat, corrosion, cold, acid, and alkali resistant
ApplicationIndustrial dust filters, baghouses, and pulse jet valve maintenance
Grade / OriginCanada / China high-performance grade
Product Standards
High-cycle replacement performance with correct maintenance.
Air SupplyUse dry, oil-free compressed air to reduce diaphragm fatigue and preserve sealing reliability
Pressure StabilityKeep operation within 0.2–0.7 MPa and avoid spikes that can stretch or crack the membrane
Leak TroubleshootingReplace the kit if the valve closes poorly or produces a sluggish pulse to prevent excess air loss
Chemical ResistanceAcid- and alkali-resistant construction suits chemical plants, smelters, and other harsh sites
InstallationTighten bonnet bolts in a star pattern to maintain an even airtight seal and avoid edge tearing
Maintenance BenefitA fresh diaphragm restores fast valve response and efficient filter-cleaning air delivery
Product Videos
Related demonstrations and selection videos.
Technical Drawings
Installation dimensions for this product.
Dimensions available on inquiryWPS-CA/TG20
WPS-CA/TG20 — Assembly Drawing
| Outer diameter | Ø80 |
|---|---|
| Bolt hole circle diameter | 🔒 |
| Bolt holes | 🔒 |
| Bolt hole angular spacing | 🔒 |
| Vertical ref dimension | 33 |
| Center hub outer diameter_section bb | Ø34 |
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Dimensions available on inquiryWPS-CA/TG25
WPS-CA/TG25 — Assembly Drawing
| Outer diameter | Ø82 [Ø3.23] |
|---|---|
| Bolt hole circle diameter | 🔒 |
| Bolt holes | 🔒 |
| Bolt hole angular spacing | 🔒 |
| Overall dimension | 106 [4.17] |
| Mid dimension | 40 [1.57] |
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Dimensions available on inquiryWPS-CA/TG40
WPS-CA/TG40 — Assembly Drawing
| Outer diameter | Ø112 [Ø4.41] |
|---|---|
| Bolt hole circle diameter | 🔒 |
| Bolt holes | 🔒 |
| Bolt hole angular spacing | 🔒 |
| Overall dimension | 122 [4.80] |
| Mid dimension | 47.5 [1.87] |
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Dimensions available on inquiryWPS-CA/EP50
WPS-CA/EP50 — Assembly Drawing
| Outer diameter | Ø160.0 |
|---|---|
| Bolt hole circle diameter | 🔒 |
| Bolt holes | 🔒 |
| Bolt hole angular spacing | 🔒 |
| Vertical ref dimension | 69.0 |
| Center hub outer diameter_section | Ø76.0 |
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Dimensions available on inquiryWPS-CA/EP62
WPS-CA/EP62 — Assembly Drawing
| Outer diameter | Ø189 |
|---|---|
| Bolt hole circle diameter | 🔒 |
| Bolt holes | 🔒 |
| Vertical ref dimension | 81 |
| Center hub outer diameter_section | Ø94 |
| Center hub inner diameter_section | 🔒 |
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Dimensions available on inquiryWPS-CA/EP76
WPS-CA/EP76 — Assembly Drawing
| Outer diameter | Ø200 |
|---|---|
| Bolt hole circle diameter | 🔒 |
| Inner bead circle diameter | 🔒 |
| Bolt holes | 🔒 |
| Center hub outer diameter_section | Ø105 |
| Center hub inner diameter_section | Ø101.0 |
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Dimensions available on inquiryWPS-CA/EP102B
WPS-CA/EP102B — Assembly Drawing
| Outer diameter | Ø202 |
|---|---|
| Bolt hole circle diameter | 🔒 |
| Bolt holes | 🔒 |
| Bolt hole angular spacing | 🔒 |
| Corner radius | R5 |
| Flange plate diameter_section | Ø202 |
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Dimensions available on inquiryWPS-CA/EP102
WPS-CA/EP102 — Assembly Drawing
| Outer diameter_scalloped | 🔒 |
|---|---|
| Bolt hole circle diameter | Ø197.3 |
| Inner bead circle diameter | 🔒 |
| Bolt holes | 🔒 |
| Bolt hole angular spacing | 30° |
| Center hub outer diameter_section | Ø124 |
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Dimensions available on inquiryWPS-CA/EP115
WPS-CA/EP115 — Assembly Drawing
| Outer diameter_scalloped | Ø241 |
|---|---|
| Bolt hole circle diameter | 🔒 |
| Scallop radius | R111 |
| Overall dimension | 232 |
| Bolt holes | 🔒 |
| Bolt hole angular spacing | 🔒 |
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Dimensions available on inquiryWPS-TZ-XMP
WPS-TZ-XMP — Assembly Drawing
| Outer diameter | Ø66 |
|---|---|
| Bolt hole circle diameter | 🔒 |
| Bolt holes | 🔒 |
| Bead radius | R24 |
| Center hub diameter_section | 🔒 |
| Membrane thickness | δ=1.27 [0.047] |
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Dimensions available on inquiryWPS-CA/EP200
WPS-CA/EP200 · 8 inch · first-stage · large-valve diaphragm assembly — Assembly Drawing
| Outer diameter | φ505 [φ19.88] |
|---|---|
| Bolt hole circle diameter | 🔒 |
| Number and size of bolt holes | 🔒 |
| Inner circle diameter | 🔒 |
| Backing plate diameter (side view) | φ236 [φ9.29] |
| Center hub / small plate diameter (side view) | φ127 [φ5.00] |
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Dimensions available on inquiryWPS-CA/EP250/I
WPS-CA/EP250/I · 10 inch · first-stage · large-valve diaphragm assembly — Assembly Drawing
| Outer diameter | 🔒 |
|---|---|
| Bolt hole circle diameter | 🔒 |
| Number and size of bolt holes | 11-φ18 [φ0.71] |
| Inner circle diameter | 🔒 |
| Number and size of inner holes | 8-φ8 [φ0.31] |
| Backing plate diameter (side view) | φ296 [φ11.65] |
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Dimensions available on inquiryWPS-CA/EP250/II
WPS-CA/EP250/II · 10 inch · second-stage · large-valve diaphragm assembly — Assembly Drawing
| Outer diameter | φ300 [φ11.8] |
|---|---|
| Inner circle diameter | 🔒 |
| Number and size of bolt holes | 🔒 |
| Small hole offset from center (linear) | 🔒 |
| Backing plate / molded plate diameter (side view) | φ80 [φ3.15] |
| Center hub diameter (side view) | φ58 [φ1.48] |
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Dimensions available on inquiryWPS-CA/EP300/I
WPS-CA/EP300/I · 12 inch · first-stage · large-valve diaphragm assembly — Assembly Drawing
| Outer diameter | 🔒 |
|---|---|
| Bolt hole circle diameter | φ690 [φ27.17] |
| Number and size of bolt holes | 🔒 |
| Inner circle diameter | 🔒 |
| Number and size of inner holes | 6-φ10 [φ0.39] |
| Backing plate diameter (side view) | φ550 [φ21.78] |
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Dimensions available on inquiryWPS-CA/EP300/II
WPS-CA/EP300/II · 12 inch · second-stage · large-valve diaphragm assembly — Assembly Drawing
| Outer diameter (side view) | φ265 [φ10.35] |
|---|---|
| Bolt hole circle diameter | φ190 [φ7.48] |
| Inner circle diameter | 🔒 |
| Number and size of bolt holes | 6-φ10 [φ0.39] |
| Small feature circle diameter | 🔒 |
| Small hole | 🔒 |
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Dimensions available on inquiryWPS-CA/EP350/I
WPS-CA/EP350/I · 14 inch · first-stage · large-valve diaphragm assembly — Assembly Drawing
| Outer diameter | 🔒 |
|---|---|
| Bolt hole circle diameter | φ800 [φ31.50] |
| Number and size of bolt holes | 🔒 |
| Inner circle diameter | 🔒 |
| Number and size of inner holes | 8-φ12 [φ0.47] |
| Backing plate diameter (side view) | φ410 [φ16.14] |
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Dimensions available on inquiryWPS-CA/EP350/II
WPS-CA/EP350/II · 14 inch · second-stage · large-valve diaphragm assembly — Assembly Drawing
| Outer / mounting circle diameter | φ225 [φ8.85] |
|---|---|
| Inner circle diameter | 🔒 |
| Number and size of bolt holes | 🔒 |
| Small hole offset from center (linear) | 🔒 |
| Molded plate diameter (side view) | φ104 [φ4.09] |
| Center hub diameter (side view) | φ84 [φ3.31] |
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Dimensions available on inquiryWPS-CA/EP400/I
WPS-CA/EP400/I · 16 inch · first-stage · large-valve diaphragm assembly — Assembly Drawing
| Outer diameter | 🔒 |
|---|---|
| Bolt hole circle diameter | 🔒 |
| Number and size of bolt holes | 22-φ26 [φ1.02] |
| Number and size of inner holes | 🔒 |
| Inner circle / active plate diameter (side view) | φ481 [φ18.94] |
| Hub plate diameter (side view) | φ124 [φ4.88] |
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Dimensions available on inquiryWPS-CA/EP400/II
WPS-CA/EP400/II · 16 inch · second-stage · large-valve diaphragm assembly — Assembly Drawing
| Outer / mounting circle diameter | φ240 [φ9.45] |
|---|---|
| Inner circle diameter | 🔒 |
| Number and size of bolt holes | 🔒 |
| Small hole offset from center (linear) | 🔒 |
| Molded plate diameter (side view) | φ110 [φ4.33] |
| Center hub diameter (side view) | φ48 [φ1.80] |
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