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Model L12-TH
The Model L12-TH Thief Hatch outperforms the competition with industry-leading flow rates and precision tolerances to provide a superior sealing performance. Leakage rates less than 1 SCFH at 90% of set pressure keeps your tanks industry-standard compliant.
The L12-TH incorporates a spring-loaded pressure/vacuum relief valve within the hatch. Install the L12-TH on steel or fiberglass (FRP) low-pressure oil tanks to provide access for level gauging, sampling and overpressure/vacuum protection, all in one compact design.
Size: 8″ (200 mm)
Bolting: API 12
Pressure settings: 4, 6, 8, 10, 12, 16, 24 and 32 osig*
Vacuum settings: 0.4, 0.9 and 3.5 osig
Casting: aluminum (non-sparking)
Envelope gasket: HNBR, FKM or fluorosilicone
Vacuum diaphragm: HNBR, FKM, fluorosilicone or fluoropolymer
Leak rate: 1 SCFH air @ 90% of set pressure
Additional pressure settings are available.
| SIZE | |
|---|---|
| in | mm |
| 8 | 200 |
| WIDTH | |||
|---|---|---|---|
| A (Closed) | D (Open) | ||
| in | mm | in | mm |
| 14.95 | 379 | 20.25 | 514 |
| HEIGHT | |||
|---|---|---|---|
| B (Closed) | C (Open) | ||
| in | mm | in | mm |
| 7.45 | 189 | 15.25 | 387 |
| ANGLE | ASSEMBLY WEIGHT | |
|---|---|---|
| E (Open) | ||
| deg | lbs | kg |
| 109.5 | 13.8 | 6.26 |
Base Gasket:
GKT12TH08K302 = Non-Asbestos
GKT12TH087602 = FKM
GKT12TH087102 = PTFE
GKT12TH084402 = Black Neoprene
GKT12TH083502 = Buna-N
GKT12TH08CJ02 = FKM (Blue)
GKT12TH08BO02 = Fluorosilicone
Mounting Kit:
KS12THBS08P01 = Hex Nut and Bolt Set – Zinc Plated Steel
KS12THBS08P02 = Hex Nut and Bolt Set – 18-8 Stainless Steel
Flange Adapter:
ADP12TH080101 = Flange Adapter – 8” 150# ASME to 8” API 12 – Aluminum
ADP12TH082001 = Flange Adapter – 8” 150# ASME to 8” API 12 – Carbon Steel
ADP12TH082002 = Flange Adapter – 8” x 18” Oblong to 8” API 12 – Carbon Steel
ADP12TH082003 = Flange Adapter – 8” x 22” Oblong to 8” API 12 – Carbon Steel
Y Adapter:
ADP12TH080104 = Y Adapter – 8″ API 12 – Aluminum
Select your specifications below to generate a custom product number.
Zip Code Locator
Model #
Size
Body Material
Envelope Gasket
Vacuum Diaphragm
Spring Material
Pressure Setting
Vacuum Setting
Options
Model #:
Size:
Body Material:
Envelope Gasket:
Vacuum Diaphragm:
Spring Material:
Pressure Setting:
Vacuum Setting:
Options:
Contact the business listed below to start your order.
Model L12-TL
Long Pan Thief Hatch
The L12-TL incorporates a large working surface, larger cover, and a gauging and sampling hook into the base. The base is inclined to match the slope of the API12 tank’s roof to provide a level working surface. A bonding strap and SLIC™ pins come standard with the L12-TL.
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Model L1220A
Pipe-Away
Use the L1220A to pipe away vapors in pressure and vacuum relief systems. The L1220A routes vapors through a flanged outlet connection, providing increased fire protection and safety.
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Model L2300A
Pressure Relief Valve
The L2300A provides emergency relief capacity above what can be supplied by standard operating valves. Use it to protect tanks, piping and low-pressure vessels from internal pressure damage.
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Model L1200A
Vent to Atmosphere
Model L1200A protects your tanks from damage created by overpressure or excessive vacuum. It reduces costly product evaporation losses due to normal tank “breathing.” It also minimizes atmospheric contamination by retaining toxic vapors, providing increased fire protection and safety.
View Vent to Atmosphere chevron_rightWe don’t manufacture until you order. Our production team employs the latest tools and techniques in agile manufacturing to fabricate your order to your specifications. After production and assembly, each product undergoes stringent quality inspections before leaving the production floor – we guarantee you’ll get exactly what you ordered.