Valve
Breather Valve
KSBB / BS
KSBB and KSBS pressure / vacuum valves are an advanced design for vent to atmosphere applications.
Pressure / vacuum relief breather valves - designed, manufactured and tested to API 2000 RULE - are designed to protect low pressure storage tanks from excessive pressure (or vacuum) created by thermal expansion (and contraction) and product movement into(out of) the tank and at the same time minizing costly product evaporation/loss.
The valve may be mounted in conjunction with a KSFI or KSFH flame arrester to provide maximum protection against excessive pressure and vacuum while minizing accidental ignition of flammable product vapor from external sources.
Introduction
These pressure vacuum valves maintain a tight seal until system pressure or vacuum exceeds the set pressure.
The valves allow an intake of air under constant pressure during emptying, or discharge excessive over pressure during filling of the tanks.
The KSBB is a weight-loaded model designed to handle pressure and vacuum with a minimum pressure of +/- 20 mmW.C and a maximum setting of +/- 700 mmW.C.
The KSBS is a spring-loaded model designed to handle pressure and vacuum with a minimum pressure of +/-700 mmW.C and a maximum setting of +/- 7,000 mmW.C.
High strength, one-body casting provide added structural integrity and durability.
Body materials are available in Aluminium, Carbon Steel, Stainless steel 304 and 316 with various trims to suit individual requirements.
Sizes range from 50mm(2") through to 300mm(12") with ANSI 150lb FF flanges as standard. (Different connections available on request).
These valves have FM FACTORY MUTUAL APPROVAL for the majority of sizes and materials.
Materials of Construction
| No. | Description | Material | |||
| Spec.1 | Spec.2 | Spec.3 | Spec.4 | ||
| 1 | BODY | ALUMINIUM | Carbon Steel | Stainless Steel (304) | Stainless Steel (316) |
| 2 | DISC | Stainless Steel (304) | Stainless Steel (304) | Stainless Steel (304) | Stainless Steel (316) |
| 3 | SEAT | Stainless Steel (304) | Stainless Steel (304) | Stainless Steel (304) | Stainless Steel (316) |
| 4 | DIAPHRAGM | FEP | |||


