Model L61T

Lock Down Hatch

The L61T provides access for gauging or obtaining product samples from storage tanks. It integrates a gauging hook into the base for tank sampling and a “cushioned air” seating for a superior seal and reduced fugitive emissions.

  • Lid permits the use of both hands during gauging or sampling
  • Ultra-tight sealing reduces product leakage and fugitive emissions
  • Easy maintenance reduces downtime and lowers operational cost
  • Optional enhanced corrosion resistance from FKM soft goods
  • Easily mounted to API 12-bolt pattern or 150# ASME flanges (adapters are available for oblong bolting configurations; see options for details)
  • Mechanical lock system can be used with a padlock or lockout bar

Size: 8″ (200 mm)


  • Casting: aluminum (non-sparking)
  • Bolting: API 12 or 150# ASME
  • Diaphragm: Buna-N, FKM, EPDM or FEP
in mm
8 200
A C(Base)
in mm in mm
16.94 430.3 13.49 342.7
in mm
6.91 175.6
deg lbs kg
110 13 5.9

Flange Adapter:  

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

Base Gasket:  

GKT12TH08CJ02 – FKM (blue)

GKT12TH087602 – FKM (black)

GKT12TH083502 – Buna-N (black)

Mounting Kit: (for API 12 bolting)

KS12THBS08P01 – Hex nut and bolt set – zinc-plated steel

KS12THBS08P02 – Hex nut and bolt set – 18-8 stainless steel

Customize Your Order

Select your specifications below to generate a custom product number.

Zip Code Locator


Bolting Class

Body Material

Diaphragm Material

Your Product Selections


Bolting Class:

Body Material:

Diaphragm Material:

Your LaMOT Valve & Arrestor Rep

Contact the business listed below to start your order.

Enter your email address to receive a copy of this information.

We will not store or sell your email address or send you any other communications.

Other Gauge Hatches

Let's Get Started

We 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.

Find a Rep