Technology

Temporary Filters Common Specifications & Working Principle

Jul 7, 2023

Temporary filter is installed on the pipeline to remove the larger impurities in the fluid, so that machinery and equipment (including compressors, pumps, etc.), and instruments can work and operate normally, stabilize the process, and ensure safe production.

Working principle: When the fluid enters the temporary filter, the impurities are blocked and the clean fluid flows out of the outlet; when cleaning is needed, simply remove the temporary filter and install it after cleaning. The characteristics of the temporary filter are mainly used before the operation of the pipeline, installed between the two flanges of the pipeline. They are easy to operate, reliable, convenient, and widely applicable.

Basket temporary filter and flat temporary filter
Application
  • Chemical and petrochemical production of weakly corrosive materials, such as water, ammonia, oil, hydrocarbons, etc.
  • Corrosive materials in chemical production, such as caustic soda, concentrated dilute sulfuric acid, carbonic acid, acetic acid, acid, etc.
  • Low temperature materials in refrigeration, such as liquid methane, liquid ammonia, liquid oxygen, and various cold agents.
  • Light industry food, pharmaceutical production of materials with health requirements, such as beer, beverages, dairy products, grain pulp medical supplies, etc.
Specification
Side view and top view drawings of basket temporary filter
Table 1: Common Specification of Basket Temporary Filter
Item Outside Diameter (A) Inside Diameter (B) Cap Diameter (C)
- mm mm mm
DN150 215 136 76
DN150-200 269 192 142
DN200 269 182 100
DN250 328 238 127
Side view and top view drawing of flat temporary filter
Table 2: Common Specification of Flat Temporary Filter
Item Outside Diameter (A) Inside Diameter (B)
- mm mm
DN15 50 15
DN20 53 20
DN25 63 25
DN32 82 32
DN50 100 50
DN65 120 65
DN100 171.5 100
DN150 215 150
DN200 269 192
DN300 400 300
Custom Specification
Table 3: Custom Specification of Basket Temporary Filter
Size
(in./mm)
Flange I.D.
(B)
Flange O.D.
(A)
Total Length
(L)
Bottom Diameter
(C)
150#
300#
600# 900# 1500# 100% 150% 200% 300%
3/4" (20 mm) 0.63" 2.13" 2.5" 2.63" 2.63" 2" - - 2.25" 0.38"
1" (25 mm) 0.75" 2.5" 2.75" 3" 3" 2" - - 3.37" 0.5"
1-1/2" (40 mm) 1.25" 3.25" 3.63" 3.75" 3.75" 2.75" - 3" 4.5" 0.75"
2" (50 mm) 1.75" 4" 4.25" 5.5" 5.5" 3" - 4" 6" 1"
2-1/2" (65 mm) 2.25" 4.75" 5" 6.38" 6.38" 3.19" - 4.5" 6.75" 1.25"
3" (80 mm) 2.75" 5.25" 5.75" 6.5" 6.75" 3.5" 3.88" 5.5" 8.5" 1.5"
4" (100 mm) 3.75" 6.75" 7.5" 8" 8.13" 4" 5" 7" 11" 2"
5" (125 mm) 4.63" 7.63" 9.38" 9.63" 9.88" 5" 6" 9" 14" 2.5"
6" (150 mm) 5.38" 8.63" 10.38" 11.25" 11" 6" 7" 11" 17" 3"
8" (200 mm) 7.38" 10.88" 12.5" 14" 13.75" 6.13" 8.19" 14" 22" 4"
10" (250 mm) 9.38" 13.25" 15.63" 17" 17" 7.5" 12" 18" 27" 5"
12" (300 mm) 11" 16" 17.88" 19.5" 20.38" 9" 13" 20" 33" 6"
14" (350 mm) 12.25" 17.38" 19" 20.38" 22.63" 10" 15" 21" 36" 7"
16" (400 mm) 14" 20.13" 21.88" 22.5" - 10" 17" 23" 42" 8"
18" (450 mm) 15.75" 21.25" 23.75" 25" - 12" 19" 27" 47" 9"
20" (500 mm) 17.5" 23.5" 26.63" - - 14" 21" 31" 53" 10"
24" (600 mm) 21.25" 27.88" 30.88" - - 16" 25" 37" 64" 12"
Note: Handle length: 3", Handle width: 1". Punching surface hole diameter: 1/8", hole centre distance: 3/16", also can be customized according to client's requirements.
Table 4: Common Specifications for Tip Bottom Temporary Filters
Size
(in./mm)
Flange I.D.
(B)
Flange O.D.
(A)
Total Length
(L)
150#
300#
600# 900# 1500# 100% 150% 200% 300%
3/4" (20 mm) 0.63" 2.13" 2.5" 2.63" 2.63" 2.25" 2.25" 3" 3.37"
1" (25 mm) 0.75" 2.5" 2.75" 3" 3" 2.75" 2.75" 3" 5"
1-1/2" (40 mm) 1.25" 3.25" 3.63" 3.75" 3.75" 3.19" 4" 5" 6.75"
2" (50 mm) 1.75" 4" 4.25" 5.5" 5.5" 3.5" 6" 8" 9.13"
2-1/2" (65 mm) 2.25" 4.75" 5" 6.38" 6.38" 4.06" 6.25" 8" 10.13"
3" (80 mm) 2.75" 5.25" 5.75" 6.5" 6.75" 4.25" 6.75" 9" 12.75"
4" (100 mm) 3.75" 6.75" 7.5" 8" 8.13" 5" 10" 12" 16.13"
5" (125 mm) 4.63" 7.63" 9.38" 9.63" 9.88" 6.5" 12" 14" 20.63"
6" (150 mm) 5.38" 8.63" 10.38" 11.25" 11" 7.5" 13" 18" 25.63"
8" (200 mm) 7.38" 10.88" 12.5" 14" 13.75" 10" 17" 23" 32.25"
10" (250 mm) 9.38" 13.25" 15.63" 17" 17" 12.5" 22" 28" 40"
12" (300 mm) 11" 16" 17.88" 19.5" 20.38" 15" 26" 34" 49"
14" (350 mm) 12.25" 17.38" 19" 20.38" 22.63" 16.5" 27" 36" 54"
16" (400 mm) 14" 20.13" 21.88" 22.5" - 19" 30" 40" 62"
18" (450 mm) 15.75" 21.25" 23.75" 25" - 22" 35" 46" 71"
20" (500 mm) 17.5" 23.5" 26.63" - - 24" 39" 51" 79"
24" (600 mm) 21.25" 27.88" 30.88" - - 29" 45" 61" 94.88"
Note: Handle length: 3", Handle width: 1". Punching surface hole diameter: 1/8", hole centre distance: 3/16", also can be customized according to client's requirements.
Table 5: Common Specification of Flat Temporary Filter
Size
(in./mm)
Flange I.D.
(B)
Flange O.D.
(A)
150# 300# 600#
1-1 1/2" (38 mm) 1-3/4" (44 mm) 3-1 1/4" (83 mm) 3-5/8" (92 mm) 3-5/8" (92 mm)
2" (50 mm) 2-1/4" (57 mm) 4" (100 mm) 4-1/4" (108 mm) 4-1/4" (108 mm)
2-1 1/2" (65 mm) 2-5/8" (67 mm) 4-3/4" (121 mm) 5" (125 mm) 5" (125 mm)
3" (80 mm) 3-1/4" (83 mm) 5-1/4" (83 mm) 5-3/4" (146 mm) 5-3/4" (146 mm)
4" (100 mm) 4-1/4" (108 mm) 6-3/4" (171 mm) 7" (178 mm) 7-1/2" (191 mm)
6" (150 mm) 6-1/4" (159 mm) 8-5/8" (219 mm) 9-3/4" (248 mm) 10-3/8" (264 mm)
8" (200 mm) 8-1/4" (210 mm) 10-7/8" (276 mm) 12" (300 mm) 12-1/2" (318 mm)
10" (250 mm) 10-1/4" (260 mm) 13-1/4" (337 mm) 14-1/8" (359 mm) 15-5/8" (397 mm)
12" (300 mm) 12-1/4" (311 mm) 16" (400 mm) 16-1/2" (419 mm) 17-7/8" (454 mm)
14" (350 mm) 14" (350 mm) 17-5/8" (448 mm) 19" (483 mm) 19-1/4" (489 mm)
16" (400 mm) 16" (400 mm) 20-1/8" (511 mm) 21-1/8" (537 mm) 22-1/8" (562 mm)
18" (450mm) 18" (450 mm) 21-1/2" (546 mm) 23-3/8" (594 mm) 24" (600 mm)
20" (500mm) 20" (500 mm) 23-3/4" (603 mm) 25-5/8" (651 mm) 26-3/4" (679 mm)
24" (600mm) 24" (600 mm) 28-1/8" (714 mm) 30-3/8" (772 mm) 31" (787 mm)
Note: Handle length: 3", Handle width: 1". Punching surface hole diameter: 1/8", hole centre distance: 3/16", also can be customized according to client's requirements.
Pictures
Measure the flange outside diameter of the flat temporary filter with vernier caliper

Flange outside diameter of the flat temporary filter measurement

Measure the flange inside diameter of the flat temporary filter with vernier caliper

Flange inside diameter of the flat temporary filter measurement

Measure the flange handle of the flat temporary filter with vernier caliper

Flange handle of the flat temporary filter measurement

Measure the flange outside diameter of the basket temporary filter with vernier caliper

Flange outside diameter of the basket temporary filter

Measure the bottom of the basket temporary filter with vernier caliper

Bottom of the basket temporary filter measurement

Measure the height of the basket temporary filter with vernier caliper

Height of the basket temporary filter

If you are interested in our filters and need customized sizes, please feel free to contact us.