• Betts BETTS-8350-SERIES
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20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP

20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP

With decades of service and commitment to quality, the Betts’ ASME Full Opening Manhole product line is the proven leader of the chemical transportation and stationary tank markets.

Part #

BETTS-8350-SERIES

Brand Betts
$1,135.00 - $3,054.31
SELECT PART# AND QUANTITY
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (HYPALON (WHITE), 6
Part# 8350ASW-6
$1,916.03
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (HYPALON (WHITE), 6", ALUM. (5454 H32), STEEL (SA414 GR. C))
USUALLY SHIPS IN 1-2 WEEKS
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (BUNA-N (BLACK), 10
Part# 8350LCB-10
$1,749.07
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (BUNA-N (BLACK), 10", 316L STAINLESS STEEL)
USUALLY SHIPS IN 1-2 WEEKS
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (SYNTEX FIBER (WOVEN), 6
Part# 8350LCE-6
$1,867.11
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (SYNTEX FIBER (WOVEN), 6", 316L STAINLESS STEEL)
USUALLY SHIPS IN 1-2 WEEKS
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (FKM TYPE-A (BROWN FDA), 10
Part# 8350LCV-10
$1,990.66
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (FKM TYPE-A (BROWN FDA), 10", 316L STAINLESS STEEL)
USUALLY SHIPS IN 1-2 WEEKS
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (FKM TYPE-A (BROWN FDA), 6
Part# 8350LCV-6
$2,010.49
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (FKM TYPE-A (BROWN FDA), 6", 316L STAINLESS STEEL)
USUALLY SHIPS IN 1-2 WEEKS
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (HYPALON (WHITE), 10
Part# 8350LCW-10
$1,777.28
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (HYPALON (WHITE), 10", 316L STAINLESS STEEL)
USUALLY SHIPS IN 1-2 WEEKS
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (HYPALON (WHITE), 6
Part# 8350LCW-6
$1,797.11
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (HYPALON (WHITE), 6", 316L STAINLESS STEEL)
USUALLY SHIPS IN 1-2 WEEKS
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (NO GASKET (SOLD SEPARATELY), 10
Part# 8350LCX-10
$1,655.00
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (NO GASKET (SOLD SEPARATELY), 10", 316L STAINLESS STEEL)
USUALLY SHIPS IN 1-2 WEEKS
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (NO GASKET (SOLD SEPARATELY), 10
Part# 8350PLX-10
$3,054.31
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (NO GASKET (SOLD SEPARATELY), 10", 2205 DUPLEX, 316L STAINLESS STEEL)
USUALLY SHIPS IN 1-2 WEEKS
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (BUNA-N (BLACK), 10
Part# 8350SCB-10
$1,375.76
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (BUNA-N (BLACK), 10", STEEL (SA414 GR. C))
USUALLY SHIPS IN 1-2 WEEKS
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (BUNA-N (BLACK), 6
Part# 8350SCB-6
$1,229.07
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (BUNA-N (BLACK), 6", STEEL (SA414 GR. C))
USUALLY SHIPS IN 1-2 WEEKS
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (FKM TYPE-A (BROWN FDA), 6
Part# 8350SCV-6
$1,470.66
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (FKM TYPE-A (BROWN FDA), 6", STEEL (SA414 GR. C))
USUALLY SHIPS IN 1-2 WEEKS
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (HYPALON (WHITE), 10
Part# 8350SCW-10
$1,407.28
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (HYPALON (WHITE), 10", STEEL (SA414 GR. C))
USUALLY SHIPS IN 1-2 WEEKS
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (HYPALON (WHITE), 6
Part# 8350SCW-6
$1,291.58
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (HYPALON (WHITE), 6", STEEL (SA414 GR. C))
USUALLY SHIPS IN 1-2 WEEKS
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (NO GASKET (SOLD SEPARATELY), 10
Part# 8350SCX-10
$1,285.00
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (NO GASKET (SOLD SEPARATELY), 10", STEEL (SA414 GR. C))
USUALLY SHIPS IN 1-2 WEEKS
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (NO GASKET (SOLD SEPARATELY), 6
Part# 8350SCX-6
$1,135.00
20” [508MM] ASME FULL OPENING MANHOLE, MODEL 8350, 6 HOLD DOWN, 50 PSIG MAWP (NO GASKET (SOLD SEPARATELY), 6", STEEL (SA414 GR. C))
USUALLY SHIPS IN 1-2 WEEKS
View full details

With decades of service and commitment to quality, the Betts’ ASME Full Opening Manhole product line is the proven leader of the chemical transportation and stationary tank markets. This industrial grade 20” [508 mm] manhole is certified to ASME Section VIII, Division 1 and meets the requirements of 49CFR§178.345-5 and §178.347-3 for use as an access port on DOT cargo tanks. The manhole is tagged with an ASME “U” stamp and a certified U2A form is provided.

The 8350-manhole assembly incorporates six (6) threaded 304SS wing-nut hold-downs and heavy-duty 5/8-inch 17-4 PH stainless steel one-piece fully machined ASME swing-bolts. The hinge is configured to provide 180-degree opening but optional hinge-stops are also available. Manholes are available in multiple material configurations with a range of gasket material options to accommodate specific service applications. Manholes manufactured from 316 stainless steel are fully passivated in accordance with ASTM A380 and are suitable for a wide range of chemical and food-grade applications.

  • Internal MAWP: 50 psig (3.4 bar)
  • External MAWP (Vacuum): FV (-14.7 psig)
  • Test Pressure: 75 psig (5.2 bar)
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