Dead Weight Hatches Type 200

The Model 200 is a dead weight pressure vacuum relief gauge and thief hatch with (8″x22″) oblong API base.

For more details, check the technical sheet attached here.

Technical Data

Attachments

SKU:tp-049 Category: TANK GAUGING Brand: Sesco

Available on backorder

Request quotation and delivery time

Description

When excessive pressure builds within the storage tank the vent’s hinged cover begins to open at the predetermined set pressure, relieving excess pressure.

When the over pressure has dissipated the cover reseats onto the base. The hinge mechanism prevents misalignment and provides an accurate reseat.

When excessive vacuum builds within the storage tank the spring loaded pallet lifts, breaking the seal between the seat and pallet, allowing vapors to pass through the valve orifice relieving the vacuum buildup. The vacuum valve reseals upon relief and remains sealed.

Features & Benefits

Full opening lid design for higher venting capacity requirements
Field replaceable gaskets without the need of special tools or complex procedures
Optional gasket materials available for “Sour Gas” or corrosive applications
Non-Corrosive coating option for extremely harsh environments
Certified flow capacities in accordance with API

Model 200 Dimensions and Parts

Ref.	Part No.	Part Name	Material	Qty.
1	21	Base	Aluminum	1
2	3	Cap	Cast Aluminum	1
3	22	Center, 0.06 kg	Cast Iron	1
+3	22A	Center, 0.03 kg	Cast Aluminum	1
+3	22-W-4	Center weight 0.11 kg	Cast Iron	2
4	4	Vacuum Disc	Cast Aluminum	1
*4	4P	Vacuum Disc	Phenolic	1
5	200G	Pressure Gasket	Sponge Neoprene	1
6	4G	Vacuum Gasket	Buna N	1
8	5	Hinge Pin	CRS Pltd.	1
+11	200 BG	Base Gasket	Tank Packing	1
12	10-24	Machine	Pltd.	4
14	HCP-148	Hinge Pin Clip	Pltd.	2
+15	1/2-13	Bolt, Hex	Pltd.	30
+15	1/2-13	Nut, Hex	Pltd.	30

*Plastic Trim Series +Furnished upon request only GTHV-16